diff --git a/LICENSE b/LICENSE index 0d4046d..e62ec04 100755 --- a/LICENSE +++ b/LICENSE @@ -1,37 +1,674 @@ -================================================================== -MikeOS -- License -================================================================== +GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. -Copyright (C) 2006 - 2020 MikeOS Developers -- http://mikeos.sourceforge.net + Preamble -All rights reserved. + The GNU General Public License is a free, copyleft license for +software and other kinds of works. -Redistribution and use in source and binary forms, with or without -modification, are permitted provided that the following conditions are met: + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. By contrast, +the GNU General Public License is intended to guarantee your freedom to +share and change all versions of a program--to make sure it remains free +software for all its users. We, the Free Software Foundation, use the +GNU General Public License for most of our software; it applies also to +any other work released this way by its authors. You can apply it to +your programs, too. - * Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. + When we speak of free software, we are referring to freedom, not +price. Our General Public Licenses are designed to make sure that you +have the freedom to distribute copies of free software (and charge for +them if you wish), that you receive source code or can get it if you +want it, that you can change the software or use pieces of it in new +free programs, and that you know you can do these things. - * Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in the - documentation and/or other materials provided with the distribution. + To protect your rights, we need to prevent others from denying you +these rights or asking you to surrender the rights. Therefore, you have +certain responsibilities if you distribute copies of the software, or if +you modify it: responsibilities to respect the freedom of others. - * Neither the name MikeOS nor the names of any MikeOS contributors - may be used to endorse or promote products derived from this software - without specific prior written permission. + For example, if you distribute copies of such a program, whether +gratis or for a fee, you must pass on to the recipients the same +freedoms that you received. You must make sure that they, too, receive +or can get the source code. And you must show them these terms so they +know their rights. -THIS SOFTWARE IS PROVIDED BY MIKEOS DEVELOPERS AND CONTRIBUTORS "AS IS" -AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE -IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE -ARE DISCLAIMED. IN NO EVENT SHALL MIKEOS DEVELOPERS BE LIABLE FOR ANY -DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES -(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR -SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER -CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, -OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE -USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + Developers that use the GNU GPL protect your rights with two steps: +(1) assert copyright on the software, and (2) offer you this License +giving you legal permission to copy, distribute and/or modify it. + For the developers' and authors' protection, the GPL clearly explains +that there is no warranty for this free software. For both users' and +authors' sake, the GPL requires that modified versions be marked as +changed, so that their problems will not be attributed erroneously to +authors of previous versions. -================================================================== + Some devices are designed to deny users access to install or run +modified versions of the software inside them, although the manufacturer +can do so. This is fundamentally incompatible with the aim of +protecting users' freedom to change the software. The systematic +pattern of such abuse occurs in the area of products for individuals to +use, which is precisely where it is most unacceptable. Therefore, we +have designed this version of the GPL to prohibit the practice for those +products. If such problems arise substantially in other domains, we +stand ready to extend this provision to those domains in future versions +of the GPL, as needed to protect the freedom of users. + Finally, every program is threatened constantly by software patents. +States should not allow patents to restrict development and use of +software on general-purpose computers, but in those that do, we wish to +avoid the special danger that patents applied to a free program could +make it effectively proprietary. To prevent this, the GPL assures that +patents cannot be used to render the program non-free. + + The precise terms and conditions for copying, distribution and +modification follow. + + TERMS AND CONDITIONS + + 0. Definitions. + + "This License" refers to version 3 of the GNU General Public License. + + "Copyright" also means copyright-like laws that apply to other kinds of +works, such as semiconductor masks. + + "The Program" refers to any copyrightable work licensed under this +License. Each licensee is addressed as "you". "Licensees" and +"recipients" may be individuals or organizations. + + To "modify" a work means to copy from or adapt all or part of the work +in a fashion requiring copyright permission, other than the making of an +exact copy. The resulting work is called a "modified version" of the +earlier work or a work "based on" the earlier work. + + A "covered work" means either the unmodified Program or a work based +on the Program. + + To "propagate" a work means to do anything with it that, without +permission, would make you directly or secondarily liable for +infringement under applicable copyright law, except executing it on a +computer or modifying a private copy. Propagation includes copying, +distribution (with or without modification), making available to the +public, and in some countries other activities as well. + + To "convey" a work means any kind of propagation that enables other +parties to make or receive copies. Mere interaction with a user through +a computer network, with no transfer of a copy, is not conveying. + + An interactive user interface displays "Appropriate Legal Notices" +to the extent that it includes a convenient and prominently visible +feature that (1) displays an appropriate copyright notice, and (2) +tells the user that there is no warranty for the work (except to the +extent that warranties are provided), that licensees may convey the +work under this License, and how to view a copy of this License. If +the interface presents a list of user commands or options, such as a +menu, a prominent item in the list meets this criterion. + + 1. Source Code. + + The "source code" for a work means the preferred form of the work +for making modifications to it. "Object code" means any non-source +form of a work. + + A "Standard Interface" means an interface that either is an official +standard defined by a recognized standards body, or, in the case of +interfaces specified for a particular programming language, one that +is widely used among developers working in that language. + + The "System Libraries" of an executable work include anything, other +than the work as a whole, that (a) is included in the normal form of +packaging a Major Component, but which is not part of that Major +Component, and (b) serves only to enable use of the work with that +Major Component, or to implement a Standard Interface for which an +implementation is available to the public in source code form. A +"Major Component", in this context, means a major essential component +(kernel, window system, and so on) of the specific operating system +(if any) on which the executable work runs, or a compiler used to +produce the work, or an object code interpreter used to run it. + + The "Corresponding Source" for a work in object code form means all +the source code needed to generate, install, and (for an executable +work) run the object code and to modify the work, including scripts to +control those activities. However, it does not include the work's +System Libraries, or general-purpose tools or generally available free +programs which are used unmodified in performing those activities but +which are not part of the work. For example, Corresponding Source +includes interface definition files associated with source files for +the work, and the source code for shared libraries and dynamically +linked subprograms that the work is specifically designed to require, +such as by intimate data communication or control flow between those +subprograms and other parts of the work. + + The Corresponding Source need not include anything that users +can regenerate automatically from other parts of the Corresponding +Source. + + The Corresponding Source for a work in source code form is that +same work. + + 2. Basic Permissions. + + All rights granted under this License are granted for the term of +copyright on the Program, and are irrevocable provided the stated +conditions are met. This License explicitly affirms your unlimited +permission to run the unmodified Program. The output from running a +covered work is covered by this License only if the output, given its +content, constitutes a covered work. This License acknowledges your +rights of fair use or other equivalent, as provided by copyright law. + + You may make, run and propagate covered works that you do not +convey, without conditions so long as your license otherwise remains +in force. You may convey covered works to others for the sole purpose +of having them make modifications exclusively for you, or provide you +with facilities for running those works, provided that you comply with +the terms of this License in conveying all material for which you do +not control copyright. Those thus making or running the covered works +for you must do so exclusively on your behalf, under your direction +and control, on terms that prohibit them from making any copies of +your copyrighted material outside their relationship with you. + + Conveying under any other circumstances is permitted solely under +the conditions stated below. Sublicensing is not allowed; section 10 +makes it unnecessary. + + 3. Protecting Users' Legal Rights From Anti-Circumvention Law. + + No covered work shall be deemed part of an effective technological +measure under any applicable law fulfilling obligations under article +11 of the WIPO copyright treaty adopted on 20 December 1996, or +similar laws prohibiting or restricting circumvention of such +measures. + + When you convey a covered work, you waive any legal power to forbid +circumvention of technological measures to the extent such circumvention +is effected by exercising rights under this License with respect to +the covered work, and you disclaim any intention to limit operation or +modification of the work as a means of enforcing, against the work's +users, your or third parties' legal rights to forbid circumvention of +technological measures. + + 4. Conveying Verbatim Copies. + + You may convey verbatim copies of the Program's source code as you +receive it, in any medium, provided that you conspicuously and +appropriately publish on each copy an appropriate copyright notice; +keep intact all notices stating that this License and any +non-permissive terms added in accord with section 7 apply to the code; +keep intact all notices of the absence of any warranty; and give all +recipients a copy of this License along with the Program. + + You may charge any price or no price for each copy that you convey, +and you may offer support or warranty protection for a fee. + + 5. Conveying Modified Source Versions. + + You may convey a work based on the Program, or the modifications to +produce it from the Program, in the form of source code under the +terms of section 4, provided that you also meet all of these conditions: + + a) The work must carry prominent notices stating that you modified + it, and giving a relevant date. + + b) The work must carry prominent notices stating that it is + released under this License and any conditions added under section + 7. This requirement modifies the requirement in section 4 to + "keep intact all notices". + + c) You must license the entire work, as a whole, under this + License to anyone who comes into possession of a copy. This + License will therefore apply, along with any applicable section 7 + additional terms, to the whole of the work, and all its parts, + regardless of how they are packaged. This License gives no + permission to license the work in any other way, but it does not + invalidate such permission if you have separately received it. + + d) If the work has interactive user interfaces, each must display + Appropriate Legal Notices; however, if the Program has interactive + interfaces that do not display Appropriate Legal Notices, your + work need not make them do so. + + A compilation of a covered work with other separate and independent +works, which are not by their nature extensions of the covered work, +and which are not combined with it such as to form a larger program, +in or on a volume of a storage or distribution medium, is called an +"aggregate" if the compilation and its resulting copyright are not +used to limit the access or legal rights of the compilation's users +beyond what the individual works permit. Inclusion of a covered work +in an aggregate does not cause this License to apply to the other +parts of the aggregate. + + 6. Conveying Non-Source Forms. + + You may convey a covered work in object code form under the terms +of sections 4 and 5, provided that you also convey the +machine-readable Corresponding Source under the terms of this License, +in one of these ways: + + a) Convey the object code in, or embodied in, a physical product + (including a physical distribution medium), accompanied by the + Corresponding Source fixed on a durable physical medium + customarily used for software interchange. + + b) Convey the object code in, or embodied in, a physical product + (including a physical distribution medium), accompanied by a + written offer, valid for at least three years and valid for as + long as you offer spare parts or customer support for that product + model, to give anyone who possesses the object code either (1) a + copy of the Corresponding Source for all the software in the + product that is covered by this License, on a durable physical + medium customarily used for software interchange, for a price no + more than your reasonable cost of physically performing this + conveying of source, or (2) access to copy the + Corresponding Source from a network server at no charge. + + c) Convey individual copies of the object code with a copy of the + written offer to provide the Corresponding Source. This + alternative is allowed only occasionally and noncommercially, and + only if you received the object code with such an offer, in accord + with subsection 6b. + + d) Convey the object code by offering access from a designated + place (gratis or for a charge), and offer equivalent access to the + Corresponding Source in the same way through the same place at no + further charge. You need not require recipients to copy the + Corresponding Source along with the object code. If the place to + copy the object code is a network server, the Corresponding Source + may be on a different server (operated by you or a third party) + that supports equivalent copying facilities, provided you maintain + clear directions next to the object code saying where to find the + Corresponding Source. Regardless of what server hosts the + Corresponding Source, you remain obligated to ensure that it is + available for as long as needed to satisfy these requirements. + + e) Convey the object code using peer-to-peer transmission, provided + you inform other peers where the object code and Corresponding + Source of the work are being offered to the general public at no + charge under subsection 6d. + + A separable portion of the object code, whose source code is excluded +from the Corresponding Source as a System Library, need not be +included in conveying the object code work. + + A "User Product" is either (1) a "consumer product", which means any +tangible personal property which is normally used for personal, family, +or household purposes, or (2) anything designed or sold for incorporation +into a dwelling. In determining whether a product is a consumer product, +doubtful cases shall be resolved in favor of coverage. For a particular +product received by a particular user, "normally used" refers to a +typical or common use of that class of product, regardless of the status +of the particular user or of the way in which the particular user +actually uses, or expects or is expected to use, the product. A product +is a consumer product regardless of whether the product has substantial +commercial, industrial or non-consumer uses, unless such uses represent +the only significant mode of use of the product. + + "Installation Information" for a User Product means any methods, +procedures, authorization keys, or other information required to install +and execute modified versions of a covered work in that User Product from +a modified version of its Corresponding Source. The information must +suffice to ensure that the continued functioning of the modified object +code is in no case prevented or interfered with solely because +modification has been made. + + If you convey an object code work under this section in, or with, or +specifically for use in, a User Product, and the conveying occurs as +part of a transaction in which the right of possession and use of the +User Product is transferred to the recipient in perpetuity or for a +fixed term (regardless of how the transaction is characterized), the +Corresponding Source conveyed under this section must be accompanied +by the Installation Information. But this requirement does not apply +if neither you nor any third party retains the ability to install +modified object code on the User Product (for example, the work has +been installed in ROM). + + The requirement to provide Installation Information does not include a +requirement to continue to provide support service, warranty, or updates +for a work that has been modified or installed by the recipient, or for +the User Product in which it has been modified or installed. Access to a +network may be denied when the modification itself materially and +adversely affects the operation of the network or violates the rules and +protocols for communication across the network. + + Corresponding Source conveyed, and Installation Information provided, +in accord with this section must be in a format that is publicly +documented (and with an implementation available to the public in +source code form), and must require no special password or key for +unpacking, reading or copying. + + 7. Additional Terms. + + "Additional permissions" are terms that supplement the terms of this +License by making exceptions from one or more of its conditions. +Additional permissions that are applicable to the entire Program shall +be treated as though they were included in this License, to the extent +that they are valid under applicable law. If additional permissions +apply only to part of the Program, that part may be used separately +under those permissions, but the entire Program remains governed by +this License without regard to the additional permissions. + + When you convey a copy of a covered work, you may at your option +remove any additional permissions from that copy, or from any part of +it. (Additional permissions may be written to require their own +removal in certain cases when you modify the work.) You may place +additional permissions on material, added by you to a covered work, +for which you have or can give appropriate copyright permission. + + Notwithstanding any other provision of this License, for material you +add to a covered work, you may (if authorized by the copyright holders of +that material) supplement the terms of this License with terms: + + a) Disclaiming warranty or limiting liability differently from the + terms of sections 15 and 16 of this License; or + + b) Requiring preservation of specified reasonable legal notices or + author attributions in that material or in the Appropriate Legal + Notices displayed by works containing it; or + + c) Prohibiting misrepresentation of the origin of that material, or + requiring that modified versions of such material be marked in + reasonable ways as different from the original version; or + + d) Limiting the use for publicity purposes of names of licensors or + authors of the material; or + + e) Declining to grant rights under trademark law for use of some + trade names, trademarks, or service marks; or + + f) Requiring indemnification of licensors and authors of that + material by anyone who conveys the material (or modified versions of + it) with contractual assumptions of liability to the recipient, for + any liability that these contractual assumptions directly impose on + those licensors and authors. + + All other non-permissive additional terms are considered "further +restrictions" within the meaning of section 10. If the Program as you +received it, or any part of it, contains a notice stating that it is +governed by this License along with a term that is a further +restriction, you may remove that term. If a license document contains +a further restriction but permits relicensing or conveying under this +License, you may add to a covered work material governed by the terms +of that license document, provided that the further restriction does +not survive such relicensing or conveying. + + If you add terms to a covered work in accord with this section, you +must place, in the relevant source files, a statement of the +additional terms that apply to those files, or a notice indicating +where to find the applicable terms. + + Additional terms, permissive or non-permissive, may be stated in the +form of a separately written license, or stated as exceptions; +the above requirements apply either way. + + 8. Termination. + + You may not propagate or modify a covered work except as expressly +provided under this License. Any attempt otherwise to propagate or +modify it is void, and will automatically terminate your rights under +this License (including any patent licenses granted under the third +paragraph of section 11). + + However, if you cease all violation of this License, then your +license from a particular copyright holder is reinstated (a) +provisionally, unless and until the copyright holder explicitly and +finally terminates your license, and (b) permanently, if the copyright +holder fails to notify you of the violation by some reasonable means +prior to 60 days after the cessation. + + Moreover, your license from a particular copyright holder is +reinstated permanently if the copyright holder notifies you of the +violation by some reasonable means, this is the first time you have +received notice of violation of this License (for any work) from that +copyright holder, and you cure the violation prior to 30 days after +your receipt of the notice. + + Termination of your rights under this section does not terminate the +licenses of parties who have received copies or rights from you under +this License. If your rights have been terminated and not permanently +reinstated, you do not qualify to receive new licenses for the same +material under section 10. + + 9. Acceptance Not Required for Having Copies. + + You are not required to accept this License in order to receive or +run a copy of the Program. Ancillary propagation of a covered work +occurring solely as a consequence of using peer-to-peer transmission +to receive a copy likewise does not require acceptance. However, +nothing other than this License grants you permission to propagate or +modify any covered work. These actions infringe copyright if you do +not accept this License. Therefore, by modifying or propagating a +covered work, you indicate your acceptance of this License to do so. + + 10. Automatic Licensing of Downstream Recipients. + + Each time you convey a covered work, the recipient automatically +receives a license from the original licensors, to run, modify and +propagate that work, subject to this License. You are not responsible +for enforcing compliance by third parties with this License. + + An "entity transaction" is a transaction transferring control of an +organization, or substantially all assets of one, or subdividing an +organization, or merging organizations. If propagation of a covered +work results from an entity transaction, each party to that +transaction who receives a copy of the work also receives whatever +licenses to the work the party's predecessor in interest had or could +give under the previous paragraph, plus a right to possession of the +Corresponding Source of the work from the predecessor in interest, if +the predecessor has it or can get it with reasonable efforts. + + You may not impose any further restrictions on the exercise of the +rights granted or affirmed under this License. For example, you may +not impose a license fee, royalty, or other charge for exercise of +rights granted under this License, and you may not initiate litigation +(including a cross-claim or counterclaim in a lawsuit) alleging that +any patent claim is infringed by making, using, selling, offering for +sale, or importing the Program or any portion of it. + + 11. Patents. + + A "contributor" is a copyright holder who authorizes use under this +License of the Program or a work on which the Program is based. The +work thus licensed is called the contributor's "contributor version". + + A contributor's "essential patent claims" are all patent claims +owned or controlled by the contributor, whether already acquired or +hereafter acquired, that would be infringed by some manner, permitted +by this License, of making, using, or selling its contributor version, +but do not include claims that would be infringed only as a +consequence of further modification of the contributor version. For +purposes of this definition, "control" includes the right to grant +patent sublicenses in a manner consistent with the requirements of +this License. + + Each contributor grants you a non-exclusive, worldwide, royalty-free +patent license under the contributor's essential patent claims, to +make, use, sell, offer for sale, import and otherwise run, modify and +propagate the contents of its contributor version. + + In the following three paragraphs, a "patent license" is any express +agreement or commitment, however denominated, not to enforce a patent +(such as an express permission to practice a patent or covenant not to +sue for patent infringement). To "grant" such a patent license to a +party means to make such an agreement or commitment not to enforce a +patent against the party. + + If you convey a covered work, knowingly relying on a patent license, +and the Corresponding Source of the work is not available for anyone +to copy, free of charge and under the terms of this License, through a +publicly available network server or other readily accessible means, +then you must either (1) cause the Corresponding Source to be so +available, or (2) arrange to deprive yourself of the benefit of the +patent license for this particular work, or (3) arrange, in a manner +consistent with the requirements of this License, to extend the patent +license to downstream recipients. "Knowingly relying" means you have +actual knowledge that, but for the patent license, your conveying the +covered work in a country, or your recipient's use of the covered work +in a country, would infringe one or more identifiable patents in that +country that you have reason to believe are valid. + + If, pursuant to or in connection with a single transaction or +arrangement, you convey, or propagate by procuring conveyance of, a +covered work, and grant a patent license to some of the parties +receiving the covered work authorizing them to use, propagate, modify +or convey a specific copy of the covered work, then the patent license +you grant is automatically extended to all recipients of the covered +work and works based on it. + + A patent license is "discriminatory" if it does not include within +the scope of its coverage, prohibits the exercise of, or is +conditioned on the non-exercise of one or more of the rights that are +specifically granted under this License. You may not convey a covered +work if you are a party to an arrangement with a third party that is +in the business of distributing software, under which you make payment +to the third party based on the extent of your activity of conveying +the work, and under which the third party grants, to any of the +parties who would receive the covered work from you, a discriminatory +patent license (a) in connection with copies of the covered work +conveyed by you (or copies made from those copies), or (b) primarily +for and in connection with specific products or compilations that +contain the covered work, unless you entered into that arrangement, +or that patent license was granted, prior to 28 March 2007. + + Nothing in this License shall be construed as excluding or limiting +any implied license or other defenses to infringement that may +otherwise be available to you under applicable patent law. + + 12. No Surrender of Others' Freedom. + + If conditions are imposed on you (whether by court order, agreement or +otherwise) that contradict the conditions of this License, they do not +excuse you from the conditions of this License. If you cannot convey a +covered work so as to satisfy simultaneously your obligations under this +License and any other pertinent obligations, then as a consequence you may +not convey it at all. For example, if you agree to terms that obligate you +to collect a royalty for further conveying from those to whom you convey +the Program, the only way you could satisfy both those terms and this +License would be to refrain entirely from conveying the Program. + + 13. Use with the GNU Affero General Public License. + + Notwithstanding any other provision of this License, you have +permission to link or combine any covered work with a work licensed +under version 3 of the GNU Affero General Public License into a single +combined work, and to convey the resulting work. The terms of this +License will continue to apply to the part which is the covered work, +but the special requirements of the GNU Affero General Public License, +section 13, concerning interaction through a network will apply to the +combination as such. + + 14. Revised Versions of this License. + + The Free Software Foundation may publish revised and/or new versions of +the GNU General Public License from time to time. Such new versions will +be similar in spirit to the present version, but may differ in detail to +address new problems or concerns. + + Each version is given a distinguishing version number. If the +Program specifies that a certain numbered version of the GNU General +Public License "or any later version" applies to it, you have the +option of following the terms and conditions either of that numbered +version or of any later version published by the Free Software +Foundation. If the Program does not specify a version number of the +GNU General Public License, you may choose any version ever published +by the Free Software Foundation. + + If the Program specifies that a proxy can decide which future +versions of the GNU General Public License can be used, that proxy's +public statement of acceptance of a version permanently authorizes you +to choose that version for the Program. + + Later license versions may give you additional or different +permissions. However, no additional obligations are imposed on any +author or copyright holder as a result of your choosing to follow a +later version. + + 15. Disclaimer of Warranty. + + THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY +APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT +HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY +OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, +THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM +IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF +ALL NECESSARY SERVICING, REPAIR OR CORRECTION. + + 16. Limitation of Liability. + + IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS +THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY +GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE +USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF +DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD +PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), +EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF +SUCH DAMAGES. + + 17. Interpretation of Sections 15 and 16. + + If the disclaimer of warranty and limitation of liability provided +above cannot be given local legal effect according to their terms, +reviewing courts shall apply local law that most closely approximates +an absolute waiver of all civil liability in connection with the +Program, unless a warranty or assumption of liability accompanies a +copy of the Program in return for a fee. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Programs + + If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these terms. + + To do so, attach the following notices to the program. It is safest +to attach them to the start of each source file to most effectively +state the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + + Copyright (C) + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..7d1891b --- /dev/null +++ b/Makefile @@ -0,0 +1,25 @@ +ASM=nasm + +SRC_DIR=source +BUILD_DIR=disk_images +DATA_DIR=data + +# Floppy image +# Fat12 +floppy_image: $(BUILD_DIR)/crawos.img +$(BUILD_DIR)/crawos.img: bootloader kernel + dd if=/dev/zero of=$(BUILD_DIR)/crawos.img bs=512 count=2880 # Use dd to make a disk image + mkfs.fat -F 12 -n "CRAWOS" $(BUILD_DIR)/crawos.img # Format the disk image with fat12 + dd if=$(BUILD_DIR)/boot.bin of=$(BUILD_DIR)/crawos.img conv=notrunc # Put boot.bin inside the disk image + mcopy -i $(BUILD_DIR)/crawos.img $(BUILD_DIR)/kernel.bin "::kernel.bin" # Put kernel.bin inside the disk image + for filename in $(DATA_DIR)/*; do mcopy -i $(BUILD_DIR)/crawos.img $$filename "::/$$(echo $$filename | xargs -n 1 basename)"; done + +# Bootloader +bootloader: $(BUILD_DIR)/boot.bin +$(BUILD_DIR)/boot.bin: + $(ASM) $(SRC_DIR)/bootload/boot.asm -f bin -o $ $(BUILD_DIR)/boot.bin + +# Kernel +kernel: $(BUILD_DIR)/kernel.bin +$(BUILD_DIR)/kernel.bin: + $(ASM) $(SRC_DIR)/kernel/kernel.asm -f bin -o $ $(BUILD_DIR)/kernel.bin diff --git a/build-linux.sh b/build-linux.sh index a3a62a3..86e62f2 100755 --- a/build-linux.sh +++ b/build-linux.sh @@ -1,14 +1,3 @@ -#!/bin/sh - -# This script assembles the CrawOS bootloader, kernel and programs -# with NASM, and then creates floppy and CD images (on Linux) - -# Only the root user can mount the floppy disk image as a virtual -# drive (loopback mounting), in order to copy across the files - -# (If you need to blank the floppy image: 'mkdosfs disk_images/crawos.flp') - - if test "`whoami`" != "root" ; then echo "You must be logged in as root to build (for loopback mounting)" echo "Enter 'su' or 'sudo bash' to switch to root" @@ -34,10 +23,6 @@ cd source nasm -O0 -w+orphan-labels -f bin -o kernel.bin kernel.asm || exit cd .. - -echo ">>> Assembling programs..." - - echo ">>> Adding bootloader to floppy image..." dd status=noxfer conv=notrunc if=source/bootload/bootload.bin of=disk_images/crawos.flp || exit @@ -49,6 +34,7 @@ rm -rf tmp-loop mkdir tmp-loop && mount -o loop -t vfat disk_images/crawos.flp tmp-loop && cp source/kernel.bin tmp-loop/ +cp data/* sleep 0.2 @@ -62,9 +48,9 @@ rm -rf tmp-loop echo ">>> Creating CD-ROM ISO image..." rm -f disk_images/crawos.iso -mkisofs -quiet -V 'MIKEOS' -input-charset iso8859-1 -o disk_images/crawos.iso -b crawos.flp disk_images/ || exit +mkisofs -quiet -V 'CRAWOS' -input-charset iso8859-1 -o disk_images/crawos.iso -b crawos.flp disk_images/ || exit echo '>>> Done!' -#qemu-system-i386 -drive file=disk_images/crawos.flp,index=0,if=floppy,format=raw +qemu-system-i386 -drive file=disk_images/crawos.flp,index=0,if=floppy,format=raw diff --git a/build-macos.sh b/build-macos.sh deleted file mode 100755 index 853de09..0000000 --- a/build-macos.sh +++ /dev/null @@ -1,117 +0,0 @@ -#!/bin/bash -u - -if ! [ "$(id -u)" -eq 0 ]; then - echo "[halt] Not running with superuser privileges." - exit 1 -fi - -echo "[okay] running as superuser." - -vercomp() { - [ "$1" = "$2" ] && return 0 - - local IFS=. - local i ver1=($1) ver2=($2) - unset IFS - if [ "${#ver1[@]}" -ne "${#ver2[@]}" ]; then - echo "[halt] versions being compared don't have the same form!" >&2 - echo "[halt] '$1' vs '$2'" >&2 - exit 1 - fi - - for ((i = 0; i < ${#ver1[@]}; ++i)); do - (( ${ver1[i]} > ${ver2[i]} )) && return 1 - (( ${ver1[i]} < ${ver2[i]} )) && return 2 - done - - return 0 -} - -nasm_version_check () { - vercomp $1 $2 - case $? in - 0) op='=';; - 1) op='>';; - 2) op='<';; - esac - if [ $op = '=' ] || [ $op = '>' ]; then - echo "[okay] nasm version at least '$2'" - return 0 - else - echo "[halt] nasm version is too low" >&2 - return 1 - fi -} - -# Main -declare -r NASM_VER_REGEX='[0-9]+\.[0-9]+\.[0-9]+' -declare -r MINIMUM_NASM_VERSION=2.10.09 -declare -r NASM_PATH=$(which nasm) - -declare current_nasm_version= - -if [ -z "$NASM_PATH" ]; then - echo "[halt] nasm was not found on the system! Make sure it is named nasm and is in the path." - exit 1 -fi - -current_nasm_version=$(nasm -v) - -[ $? -ne 0 ] && echo '[halt] error calling nasm' >&2 && exit 1 - -if [[ "$current_nasm_version" =~ $NASM_VER_REGEX ]]; then - current_nasm_version=${BASH_REMATCH[0]} - echo "[okay] found current nasm version of '$current_nasm_version'" -else - echo "[halt] could not determine nasm version" >&2 - exit 1 -fi - -nasm_version_check "$current_nasm_version" "$MINIMUM_NASM_VERSION" - -[ $? -ne 0 ] && echo "[halt] nasm not found or version is incompatible" >&2 && exit 1 - -"$NASM_PATH" -O0 -f bin -o source/bootload/bootload.bin source/bootload/bootload.asm || exit 1 -echo "[okay] assembled bootloader" - -cd source -"$NASM_PATH" -O0 -f bin -o kernel.bin kernel.asm || exit 1 -echo "[okay] assembled kernel" -cd .. - -cd programs -for i in *.asm; do - "$NASM_PATH" -O0 -f bin $i -o "$(basename $i .asm).bin" || exit 1 - echo "[okay] assembled program: $i" -done -echo "[okay] assembled all programs" -cd .. - -cp disk_images/mikeos.flp disk_images/mikeos.dmg -echo "[okay] copied floppy image" - -dd conv=notrunc if=source/bootload/bootload.bin of=disk_images/mikeos.dmg || exit 1 -echo "[okay] added bootloader to image" - -tmp_file=$(mktemp -d /tmp/$(basename $0).XXXXXX) -[ $? -ne 0 ] && echo "[halt] error creating a temp file" >&2 && exit 1 - -dev=$(echo -n $(hdid -nobrowse -nomount disk_images/mikeos.dmg)) -[ $? -ne 0 ] && echo "[halt] could not create disk from image" >&2 && exit 1 - -mount -t msdos "$dev" "$tmp_file" -[ $? -ne 0 ] && echo "[halt] could not mount "$dev"" >&2 && exit 1 - -cp source/kernel.bin "$tmp_file/" -cp programs/*.bin programs/*.bas programs/sample.pcx programs/vedithlp.txt programs/gen.4th programs/hello.512 "$tmp_file" -echo "[okay] added programs to image" - -diskutil umount "$tmp_file" -hdiutil detach "$dev" -rm -rf "$tmp_file" -echo "[okay] unmounted floppy image" - -rm -f disk_images/mikeos.iso -mkisofs -quiet -V 'MIKEOS' -input-charset iso8859-1 -o disk_images/mikeos.iso -b mikeos.dmg disk_images/ || exit 1 -echo "[okay] converted floppy to ISO-8859-1 image" -echo "[done] build completed" diff --git a/build-openbsd.sh b/build-openbsd.sh deleted file mode 100755 index b47967a..0000000 --- a/build-openbsd.sh +++ /dev/null @@ -1,80 +0,0 @@ -#!/bin/sh - -# This script assembles the MikeOS bootloader, kernel and programs -# with NASM, and then creates floppy and CD images (on OpenBSD) - -# Only the root user can mount the floppy disk image as a virtual -# drive (loopback mounting), in order to copy across the files - - -echo "Experimental OpenBSD build script..." - - -if test "`whoami`" != "root" ; then - echo "You must be logged in as root to build (for loopback mounting)" - echo "Enter 'su' to switch to root" - exit -fi - - -if [ ! -e disk_images/mikeos.flp ] -then - echo ">>> Creating new MikeOS floppy image..." - dd if=/dev/zero of=disk_images/mikeos.flp bs=512 count=2880 || exit - vnconfig vnd3 disk_images/mikeos.flp && newfs_msdos -f 1440 vnd3c && vnconfig -u vnd3 || exit -fi - - -echo ">>> Assembling bootloader..." - -nasm -O0 -w+orphan-labels -f bin -o source/bootload/bootload.bin source/bootload/bootload.asm || exit - - -echo ">>> Assembling MikeOS kernel..." - -cd source -nasm -O0 -w+orphan-labels -f bin -o kernel.bin kernel.asm || exit -cd .. - - -echo ">>> Assembling programs..." - -cd programs - -for i in *.asm -do - nasm -O0 -w+orphan-labels -f bin $i -o `basename $i .asm`.bin || exit -done - -cd .. - - -echo ">>> Adding bootloader to floppy image..." - -dd conv=notrunc if=source/bootload/bootload.bin of=disk_images/mikeos.flp || exit - - -echo ">>> Copying MikeOS kernel and programs..." - -rm -rf tmp-loop -vnconfig vnd3 disk_images/mikeos.flp || exit - -mkdir tmp-loop && mount -t msdos /dev/vnd3c tmp-loop && cp source/kernel.bin tmp-loop/ - -cp programs/*.bin programs/*.bas programs/sample.pcx programs/vedithlp.txt programs/gen.4th programs/hello.512 tmp-loop - -echo ">>> Unmounting loopback floppy..." - -umount tmp-loop || exit - -vnconfig -u vnd3 || exit -rm -rf tmp-loop - - -echo ">>> Creating CD-ROM ISO image..." - -rm -f disk_images/mikeos.iso -mkisofs -quiet -V 'MIKEOS' -r -J -o disk_images/mikeos.iso -b mikeos.flp disk_images/ || exit - -echo '>>> Done!' - diff --git a/buildwin.bat b/buildwin.bat deleted file mode 100755 index de5693b..0000000 --- a/buildwin.bat +++ /dev/null @@ -1,40 +0,0 @@ -@echo off -echo Build script for Windows -echo. - -echo Assembling bootloader... -cd source\bootload -nasm -O0 -f bin -o bootload.bin bootload.asm -cd .. - -echo Assembling MikeOS kernel... -nasm -O0 -f bin -o kernel.bin kernel.asm - -echo Assembling programs... -cd ..\programs - for %%i in (*.asm) do nasm -O0 -f bin %%i - for %%i in (*.bin) do del %%i - for %%i in (*.) do ren %%i %%i.bin -cd .. - -echo Adding bootsector to disk image... -cd disk_images -dd count=2 seek=0 bs=512 if=..\source\bootload\bootload.bin of=.\mikeos.flp -cd .. - -echo Mounting disk image... -imdisk -a -f disk_images\mikeos.flp -s 1440K -m B: - -echo Copying kernel and applications to disk image... -copy source\kernel.bin b:\ -copy programs\*.bin b:\ -copy programs\sample.pcx b:\ -copy programs\vedithlp.txt b:\ -copy programs\gen.4th b:\ -copy programs\hello.512 b:\ -copy programs\*.bas b:\ - -echo Dismounting disk image... -imdisk -D -m B: - -echo Done! diff --git a/data/hello-world.cr b/data/hello-world.cr new file mode 100644 index 0000000..05cc6aa --- /dev/null +++ b/data/hello-world.cr @@ -0,0 +1 @@ +output 'Hello World' diff --git a/disk_images/boot.bin b/disk_images/boot.bin new file mode 100644 index 0000000..5e6d184 Binary files /dev/null and b/disk_images/boot.bin differ diff --git a/disk_images/crawos.flp b/disk_images/crawos.img old mode 100755 new mode 100644 similarity index 99% rename from disk_images/crawos.flp rename to disk_images/crawos.img index 4044973..1fcadb4 Binary files a/disk_images/crawos.flp and b/disk_images/crawos.img differ diff --git a/disk_images/crawos.iso b/disk_images/crawos.iso deleted file mode 100644 index 1133aac..0000000 Binary files a/disk_images/crawos.iso and /dev/null differ diff --git a/disk_images/kernel.bin b/disk_images/kernel.bin new file mode 100644 index 0000000..c0fc505 Binary files /dev/null and b/disk_images/kernel.bin differ diff --git a/source/bootload/.bootload.asm.swp b/source/bootload/.bootload.asm.swp deleted file mode 100755 index 1f121f0..0000000 Binary files a/source/bootload/.bootload.asm.swp and /dev/null differ diff --git a/source/bootload/.hexdump.swp b/source/bootload/.hexdump.swp deleted file mode 100755 index 12fb9ee..0000000 Binary files a/source/bootload/.hexdump.swp and /dev/null differ diff --git a/source/bootload/.swp b/source/bootload/.swp deleted file mode 100755 index fb02fca..0000000 Binary files a/source/bootload/.swp and /dev/null differ diff --git a/source/bootload/boot.asm b/source/bootload/boot.asm new file mode 100644 index 0000000..9922752 --- /dev/null +++ b/source/bootload/boot.asm @@ -0,0 +1,297 @@ +ORG 7C00h +BITS 16 + +jmp short main +nop + +; Define Fat12 header +bdb_oem: db 'MSWIN4.1' +bdb_bytes_per_sector: dw 512 +bdb_sectors_per_cluster: db 1 +bdb_reserved_sectors: dw 1 +bdb_fat_count: db 2 +bdb_dir_entries_count: dw 0E0h +bdb_total_sectors: dw 2880 +bdb_media_descriptor_type: db 0F0h +bdb_sectors_per_fat: dw 9 +bdb_sectors_per_track: dw 18 +bdb_heads: dw 2 +bdb_hidden_sectors: dd 0 +bdb_large_sector_count: dd 0 + +; extended boot record +ebr_drive_number: db 0 + db 0 +ebr_signature: db 29h +ebr_volume_id: db 12h, 34h, 56h, 78h +ebr_volume_label: db 'CrawShaw OS' +ebr_system_id: db 'FAT12 ' + +main: + ; Setup registers + mov ax, 0 + mov ds, ax ; ds = data segment pointer + mov es, ax ; es = extra segment pointer + mov ss, ax ; ss = stack pointer + + mov sp, 7C00h + + ; Read from disk + ;mov [ebr_drive_number], dl + ;mov ax, 1 + ;mov cl, 1 + ;mov bx, 7E00h + ;call disk_read + + ; Output boot text + mov si, boot_text + call print_string + + ; Load kernel + ; 4 segments: + ; reserved segment (bdb_reserved_segments, 1) + ; FAT: (sectors_per_fat * fat_count) 9*2=18 + ; root dir: gives location of data + ; data: stores the actual data + + ; Get LBA of root dir + mov ax, [bdb_sectors_per_fat] + mov bl, [bdb_fat_count] + xor bh,bh ; clear bh + mul bx ; 9 * 2 = 18 + add ax, [bdb_reserved_sectors] ; The LBA of root dir + push ax ; Push to stack + + mov ax, [bdb_dir_entries_count] + shl ax,5 ; ax *= 32 (shifting 5 times) + xor dx,dx ; Clear dx + div word [bdb_bytes_per_sector] ;32*num of entries)/bytes per sector + test dx,dx ; See if there's a remainder + jz root_dir_after + inc ax ; Add one if there's a remainder + +root_dir_after: + mov cl, al + pop ax ; LBA of root dir + mov dl, [ebr_drive_number] + mov bx, buffer + call disk_read + + xor bx,bx ; clear bx + mov di, buffer ; Loaded root dir into memory + +search_for_kernel: + mov si, file_kernel_bin ; Move the name of the kernel into si + mov cx, 11 + push di ; Preserve di + repe cmpsb ; Repeat a comparison of bytes between kernel name and current bytes until it finds a match + pop di ; Retrieve di + je found_kernel + + add di, 32 ; Next directory entry + inc bx + cmp bx, [bdb_dir_entries_count] ; Have we reached the number of directories that exist + jl search_for_kernel ; Repeat search + + jmp kernel_not_found ; If the last dir has been searched, then there is no kernel +kernel_not_found: + mov si, kernel_load_error + call print_string + + hlt + jmp halt + +found_kernel: + mov si, kernel_found_text + call print_string + ; Find kernel cluster + mov ax, [di+26] + mov [kernel_cluster], ax + + mov ax, [bdb_reserved_sectors] + mov bx, buffer + mov cl, [bdb_sectors_per_fat] + mov dl, [ebr_drive_number] + + call disk_read ; Load FAT from disk into memory + + ; Load kernel into memory + mov bx, kernel_load_segment + mov es, bx + mov bx, kernel_load_offset ; Setup memory that kernel will be loaded into + +load_kernel_loop: + mov ax, [kernel_cluster] + add ax, 31 ; Setup offset so we can read the particular cluster + mov cl, 1 ;sectors to read + mov dl, [ebr_drive_number] + + call disk_read + + add bx, [bdb_bytes_per_sector] + + ; (kernel_cluster * 3) / 2 + mov ax, [kernel_cluster] + mov cx, 3 + mul cx + mov cx, 2 + div cx + + ; setup buffers + mov si, buffer + add si, ax + mov ax, [ds:si] + + or dx,dx + jz even + +odd: + shr ax, 4 ;shift ax 4 + jmp next_cluster_after + +even: + and ax, 0fffh ; Gives the other 12 bits + +next_cluster_after: + cmp ax, 0ff8h ; If the value is ff8h or bigger then we've reached the end of FAT + jae read_finish + + mov [kernel_cluster], ax + jmp load_kernel_loop + +read_finish: ; Load kernel + mov dl, [ebr_drive_number] + mov ax, kernel_load_segment + mov ds, ax + mov es, ax + + jmp kernel_load_segment:kernel_load_offset ; Jump to the kernel code + hlt + + +halt: + jmp halt + +; LBA = index of data segment on disk +; CHS = cylinder, header, sector +; input, LBA index: ax +; sector number: cx [0-5] +; cylinder: cx [6-15] +; head: dh +lba_to_chs: + push ax + push dx + + xor dx,dx ; clear dx + div word [bdb_sectors_per_track] ;(LBA % sectors per track) + 1 = sector + inc dx ; sector, dx stores the remainder so we increment that. + mov cx,dx + + xor dx,dx ; clear dx + div word [bdb_heads] + + mov dh,dl ; head + mov ch,al + shl ah, 6 + or CL, AH ; cylinder + + pop ax + mov dl,al + pop ax + + RET + +disk_read: + push ax + push bx + push cx + push dx + push di + + + call lba_to_chs + + mov ah, 02h + + ; repeat drive read 3 times (incase of random error) + mov di, 3 ; counter + +retry: + stc + int 13h + jnc done_read + + call disk_reset ; Reset drivers of disk + + dec di + test di, di + jnz retry + +fail_disk_read: + mov si, disk_read_fail + call print_string + hlt + jmp halt + +disk_reset: + pusha + mov ah, 0 ; Reset drive + stc + int 13h + jc fail_disk_read + popa + ret + +done_read: + pop di + pop dx + pop cx + pop bx + pop ax + ret + +; SI = pointer to start of string to be printed +print_string: + push si + push ax + push bx + + mov ah, 0Eh ; int 10h teletype function, we're telling the BIOS we will print something + + .repeat: + lodsb ; Get char from si into al + cmp al, 0 ; Compare al to 0 + je .done ; If char is zero, end of string + + mov bh, 0 + int 10h ; Otherwise, print it + jmp .repeat ; And move on to next char + + .done: + ; Print newline + mov ah, 0Eh + mov al, 13 + int 10h + mov al, 10 + int 10h + ; Exit function + pop bx + pop ax + pop si + ret + +boot_text: db '[OK] Boot sequence begun...', 0 +kernel_found_text: db '[OK] Kernel located...', 0 +disk_read_fail: db '[ERR] Failed to read disk!', 0 +file_kernel_bin: db 'KERNEL BIN' ; Must have a double space between KERNEL and BIN +kernel_load_error: db '[ERR] Kernel not found!', 0 + +kernel_cluster: dw 0 +kernel_load_segment: equ 2000h +kernel_load_offset: equ 0 + + +times 510-($-$$) db 0 ; Fill up the next 510 bits with 0's +dw 0AA55h ; D + +buffer: diff --git a/source/bootload/bootload.asm b/source/bootload/bootload.asm deleted file mode 100755 index 5515932..0000000 --- a/source/bootload/bootload.asm +++ /dev/null @@ -1,357 +0,0 @@ -; ================================================================== -; The Mike Operating System bootloader -; Copyright (C) 2006 - 2022 MikeOS Developers -- see doc/LICENSE.TXT -; -; Based on a free boot loader by E Dehling. It scans the FAT12 -; floppy for KERNEL.BIN (the MikeOS kernel), loads it and executes it. -; This must grow no larger than 512 bytes (one sector), with the final -; two bytes being the boot signature (AA55h). Note that in FAT12, -; a cluster is the same as a sector: 512 bytes. -; ================================================================== - - - BITS 16 - - jmp short bootloader_start ; Jump past disk description section - nop ; Pad out before disk description - - -; ------------------------------------------------------------------ -; Disk description table, to make it a valid floppy -; Note: some of these values are hard-coded in the source! -; Values are those used by IBM for 1.44 MB, 3.5" diskette - -OEMLabel db "MIKEBOOT" ; Disk label -BytesPerSector dw 512 ; Bytes per sector -SectorsPerCluster db 1 ; Sectors per cluster -ReservedForBoot dw 1 ; Reserved sectors for boot record -NumberOfFats db 2 ; Number of copies of the FAT -RootDirEntries dw 224 ; Number of entries in root dir - ; (224 * 32 = 7168 = 14 sectors to read) -LogicalSectors dw 2880 ; Number of logical sectors -MediumByte db 0F0h ; Medium descriptor byte -SectorsPerFat dw 9 ; Sectors per FAT -SectorsPerTrack dw 18 ; Sectors per track (36/cylinder) -Sides dw 2 ; Number of sides/heads -HiddenSectors dd 0 ; Number of hidden sectors -LargeSectors dd 0 ; Number of LBA sectors -DriveNo dw 0 ; Drive No: 0 -Signature db 41 ; Drive signature: 41 for floppy -VolumeID dd 00000000h ; Volume ID: any number -VolumeLabel db "MIKEOS "; Volume Label: any 11 chars -FileSystem db "FAT12 " ; File system type: don't change! - - -; ------------------------------------------------------------------ -; Main bootloader code - -bootloader_start: - mov ax, 07C0h ; Set up 4K of stack space above buffer - add ax, 544 ; 8k buffer = 512 paragraphs + 32 paragraphs (loader) - cli ; Disable interrupts while changing stack - mov ss, ax - mov sp, 4096 - sti ; Restore interrupts - - mov ax, 07C0h ; Set data segment to where we're loaded - mov ds, ax - - ; NOTE: A few early BIOSes are reported to improperly set DL - - cmp dl, 0 - je no_change - mov [bootdev], dl ; Save boot device number - mov ah, 8 ; Get drive parameters - int 13h - jc fatal_disk_error - and cx, 3Fh ; Maximum sector number - mov [SectorsPerTrack], cx ; Sector numbers start at 1 - movzx dx, dh ; Maximum head number - add dx, 1 ; Head numbers start at 0 - add 1 for total - mov [Sides], dx - -no_change: - mov eax, 0 ; Needed for some older BIOSes - - -; First, we need to load the root directory from the disk. Technical details: -; Start of root = ReservedForBoot + NumberOfFats * SectorsPerFat = logical 19 -; Number of root = RootDirEntries * 32 bytes/entry / 512 bytes/sector = 14 -; Start of user data = (start of root) + (number of root) = logical 33 - -floppy_ok: ; Ready to read first block of data - mov ax, 19 ; Root dir starts at logical sector 19 - call l2hts - - mov si, buffer ; Set ES:BX to point to our buffer (see end of code) - mov bx, ds - mov es, bx - mov bx, si - - mov ah, 2 ; Params for int 13h: read floppy sectors - mov al, 14 ; And read 14 of them - - pusha ; Prepare to enter loop - - -read_root_dir: - popa ; In case registers are altered by int 13h - pusha - - stc ; A few BIOSes do not set properly on error - int 13h ; Read sectors using BIOS - - jnc search_dir ; If read went OK, skip ahead - call reset_floppy ; Otherwise, reset floppy controller and try again - jnc read_root_dir ; Floppy reset OK? - - jmp reboot ; If not, fatal double error - - -search_dir: - popa - - mov ax, ds ; Root dir is now in [buffer] - mov es, ax ; Set DI to this info - mov di, buffer - - mov cx, word [RootDirEntries] ; Search all (224) entries - mov ax, 0 ; Searching at offset 0 - - -next_root_entry: - xchg cx, dx ; We use CX in the inner loop... - - mov si, kern_filename ; Start searching for kernel filename - mov cx, 11 - rep cmpsb - je found_file_to_load ; Pointer DI will be at offset 11 - - add ax, 32 ; Bump searched entries by 1 (32 bytes per entry) - - mov di, buffer ; Point to next entry - add di, ax - - xchg dx, cx ; Get the original CX back - loop next_root_entry - - mov si, file_not_found ; If kernel is not found, bail out - call print_string - jmp reboot - - -found_file_to_load: ; Fetch cluster and load FAT into RAM - mov ax, word [es:di+0Fh] ; Offset 11 + 15 = 26, contains 1st cluster - mov word [cluster], ax - - mov ax, 1 ; Sector 1 = first sector of first FAT - call l2hts - - mov di, buffer ; ES:BX points to our buffer - mov bx, di - - mov ah, 2 ; int 13h params: read (FAT) sectors - mov al, 9 ; All 9 sectors of 1st FAT - - pusha ; Prepare to enter loop - - -read_fat: - popa ; In case registers are altered by int 13h - pusha - - stc - int 13h ; Read sectors using the BIOS - - jnc read_fat_ok ; If read went OK, skip ahead - call reset_floppy ; Otherwise, reset floppy controller and try again - jnc read_fat ; Floppy reset OK? - -; ****************************************************************** -fatal_disk_error: -; ****************************************************************** - mov si, disk_error ; If not, print error message and reboot - call print_string - jmp reboot ; Fatal double error - - -read_fat_ok: - popa - - mov ax, 2000h ; Segment where we'll load the kernel - mov es, ax - mov bx, 0 - - mov ah, 2 ; int 13h floppy read params - mov al, 1 - - push ax ; Save in case we (or int calls) lose it - - -; Now we must load the FAT from the disk. Here's how we find out where it starts: -; FAT cluster 0 = media descriptor = 0F0h -; FAT cluster 1 = filler cluster = 0FFh -; Cluster start = ((cluster number) - 2) * SectorsPerCluster + (start of user) -; = (cluster number) + 31 - -load_file_sector: - mov ax, word [cluster] ; Convert sector to logical - add ax, 31 - - call l2hts ; Make appropriate params for int 13h - - mov ax, 2000h ; Set buffer past what we've already read - mov es, ax - mov bx, word [pointer] - - pop ax ; Save in case we (or int calls) lose it - push ax - - stc - int 13h - - jnc calculate_next_cluster ; If there's no error... - - call reset_floppy ; Otherwise, reset floppy and retry - jmp load_file_sector - - - ; In the FAT, cluster values are stored in 12 bits, so we have to - ; do a bit of maths to work out whether we're dealing with a byte - ; and 4 bits of the next byte -- or the last 4 bits of one byte - ; and then the subsequent byte! - -calculate_next_cluster: - mov ax, [cluster] - mov dx, 0 - mov bx, 3 - mul bx - mov bx, 2 - div bx ; DX = [cluster] mod 2 - mov si, buffer - add si, ax ; AX = word in FAT for the 12 bit entry - mov ax, word [ds:si] - - or dx, dx ; If DX = 0 [cluster] is even; if DX = 1 then it's odd - - jz even ; If [cluster] is even, drop last 4 bits of word - ; with next cluster; if odd, drop first 4 bits - -odd: - shr ax, 4 ; Shift out first 4 bits (they belong to another entry) - jmp short next_cluster_cont - - -even: - and ax, 0FFFh ; Mask out final 4 bits - - -next_cluster_cont: - mov word [cluster], ax ; Store cluster - - cmp ax, 0FF8h ; FF8h = end of file marker in FAT12 - jae end - - add word [pointer], 512 ; Increase buffer pointer 1 sector length - jmp load_file_sector - - -end: ; We've got the file to load! - pop ax ; Clean up the stack (AX was pushed earlier) - mov dl, byte [bootdev] ; Provide kernel with boot device info - - jmp 2000h:0000h ; Jump to entry point of loaded kernel! - - -; ------------------------------------------------------------------ -; BOOTLOADER SUBROUTINES - -reboot: - mov ax, 0 - int 16h ; Wait for keystroke - mov ax, 0 - int 19h ; Reboot the system - - -print_string: ; Output string in SI to screen - pusha - - mov ah, 0Eh ; int 10h teletype function - -.repeat: - lodsb ; Get char from string - cmp al, 0 - je .done ; If char is zero, end of string - int 10h ; Otherwise, print it - jmp short .repeat - -.done: - popa - ret - - -reset_floppy: ; IN: [bootdev] = boot device; OUT: carry set on error - push ax - push dx - mov ax, 0 - mov dl, byte [bootdev] - stc - int 13h - pop dx - pop ax - ret - - -l2hts: ; Calculate head, track and sector settings for int 13h - ; IN: logical sector in AX, OUT: correct registers for int 13h - push bx - push ax - - mov bx, ax ; Save logical sector - - mov dx, 0 ; First the sector - div word [SectorsPerTrack] - add dl, 01h ; Physical sectors start at 1 - mov cl, dl ; Sectors belong in CL for int 13h - mov ax, bx - - mov dx, 0 ; Now calculate the head - div word [SectorsPerTrack] - mov dx, 0 - div word [Sides] - mov dh, dl ; Head/side - mov ch, al ; Track - - pop ax - pop bx - - mov dl, byte [bootdev] ; Set correct device - - ret - - -; ------------------------------------------------------------------ -; STRINGS AND VARIABLES - - kern_filename db "KERNEL BIN" ; MikeOS kernel filename - - disk_error db "Floppy error! Press any key...", 0 - file_not_found db "KERNEL.BIN not found!", 0 - - bootdev db 0 ; Boot device number - cluster dw 0 ; Cluster of the file we want to load - pointer dw 0 ; Pointer into Buffer, for loading kernel - - -; ------------------------------------------------------------------ -; END OF BOOT SECTOR AND BUFFER START - - times 510-($-$$) db 0 ; Pad remainder of boot sector with zeros - dw 0AA55h ; Boot signature (DO NOT CHANGE!) - - -buffer: ; Disk buffer begins (8k after this, stack starts) - - -; ================================================================== - diff --git a/source/bootload/bootload.bin b/source/bootload/bootload.bin deleted file mode 100755 index 68580c7..0000000 Binary files a/source/bootload/bootload.bin and /dev/null differ diff --git a/source/games/pong_old.asm b/source/games/pong_old.asm deleted file mode 100644 index ec82717..0000000 --- a/source/games/pong_old.asm +++ /dev/null @@ -1,86 +0,0 @@ -game_pong: - pusha - call os_set_graphics_mode - jmp .draw_player_1 - jmp .draw_player_2 - jmp .detect_inputi -.draw_player_1: - ; X coords - mov ax, [p1_x] - mov [x_start], ax - mov [x_end], ax - - ; Y coords - mov bx, [p1_y] - mov [y_start], bx - add bx, [bat_height] ; Add the bat height to the y coord - mov [y_end], b - call os_draw_graphical_rectangle - ret -.draw_player_2: - ; X coords - mov ax, [p2_x] - mov [x_start], ax - mov [x_end], ax - - ; Y coords - mov bx, [p2_y] - mov [y_start], bx - add bx, [bat_height] ; Add the bat height to the y coord - mov [y_end], bx - - call os_draw_graphical_rectangle - ret -.detect_input: - call os_read_input - ; Exit if backspace is pressed - cmp al, 08h - je .finish - ; Go up when you press 'w' - cmp al, 77h - je .p1_up - ; Go up when you press 's' - cmp al, 73h - je .p1_down - - ; Loop back - jmp .detect_input -.p1_down: - ; X coords - mov ax, [p1_x] - mov [x_start], ax - mov [x_end], ax - - ; Y coords - mov bx, [p1_y] - add bx, 5 ; Move the bat down 5 - mov [y_start], bx - add bx, [bat_height] ; Add the bat height to the y coord - mov [y_end], bx - - call os_draw_graphical_rectangle - ret -.p1_up: - mov ax, [move_distance] - sub ax, [p1_y] - call os_draw_graphical_rectangle - ret -.finish: - call os_set_text_mode - popa - ret - -section .data - x_start dw 0 - y_start dw 0 - x_end dw 0 - y_end dw 0 - - p1_y dw 5 - p2_y dw 0 - p1_x dw 5 - p2_x dw 30 - - bat_height dw 20 - move_distance dw 5 - colour db 1111b diff --git a/source/kernel.asm b/source/kernel.asm deleted file mode 100755 index 912ca67..0000000 --- a/source/kernel.asm +++ /dev/null @@ -1,79 +0,0 @@ - BITS 16 - CPU 386 ; pusha offsets depends on a 386 or better - ; FS and GS require a 386 or better - - %DEFINE CRAWOS_VER '0.0.2' ; OS version number - %DEFINE CRAWOS_API_VER 1 ; API version for programs to check - - - ; This is the location in RAM for kernel disk operations, 24K - ; after the point where the kernel has loaded; it's 8K in size, - ; because external programs load after it at the 32K point: - - disk_buffer equ 24576 - - - -; ------------------------------------------------------------------ -; START OF MAIN KERNEL CODE - -os_main: - cli ; Clear interrupts - mov ax, 0 - mov ss, ax ; Set stack segment and pointer - mov sp, 0FFFFh - sti ; Restore interrupts - - cld ; The default direction for string operations - ; will be 'up' - incrementing address in RAM - - mov ax, 2000h ; Set all segments to match where kernel is loaded - mov ds, ax ; After this, we don't need to bother with - mov es, ax ; segments ever again, as MikeOS and its programs - mov fs, ax ; live entirely in 64K - mov gs, ax - - cmp dl, 0 - je no_change - -no_change: - mov si, help_text - call os_print_string_nl - call os_start_cli - -bootdev db 0 -SecsPerTrack dw 18 -Sides dw 2 - -; ------------------------------------------------------------------ -; SYSTEM VARIABLES -- Settings for programs and system calls - - - ; Time and date formatting - - fmt_12_24 db 0 ; Non-zero = 24-hr format - - fmt_date db 0, '/' ; 0, 1, 2 = M/D/Y, D/M/Y or Y/M/D - ; Bit 7 = use name for months - ; If bit 7 = 0, second byte = separator character - - -; ------------------------------------------------------------------ -; FEATURES -- Code to pull into the kernel - %INCLUDE "features/screen.asm" - %INCLUDE "features/cli.asm" - %INCLUDE "features/power.asm" - %INCLUDE "features/strings.asm" - %INCLUDE "features/graphics.asm" - %INCLUDE "features/sound.asm" - -; FUNCTIONS -- Other stuff that is useful - %INCLUDE "functios/math.asm" - -; GAMES -- Games that I wrote for it - %INCLUDE "games/pong.asm" - -; ================================================================== -; END OF KERNEL -; ================================================================== - diff --git a/source/kernel.bin b/source/kernel.bin deleted file mode 100644 index c3efb35..0000000 Binary files a/source/kernel.bin and /dev/null differ diff --git a/source/features/sound.asm b/source/kernel/features/basic.asm similarity index 100% rename from source/features/sound.asm rename to source/kernel/features/basic.asm diff --git a/source/features/cli.asm b/source/kernel/features/cli.asm similarity index 74% rename from source/features/cli.asm rename to source/kernel/features/cli.asm index ecb1fc4..0dcce7e 100755 --- a/source/features/cli.asm +++ b/source/kernel/features/cli.asm @@ -40,6 +40,12 @@ os_read_cli: cmp cl, 1 je pong + mov si, user_input + mov di, snake_string + call os_compare_strings + cmp cl, 1 + je snake + jmp .unkown .unkown: @@ -66,13 +72,19 @@ pong: call game_pong call os_read_cli.finish +snake: + call game_snake + call os_read_cli.finish + section .data + welcome_text db 'Welcome to CrawOS, the Cool, Real and AWsome Operating System', 0 user_input times 20 db 0 prompt_length db 20 - prompt db 'CrawOS: ', 0 + prompt db 'CrawOS sh> ', 0 help_string db 'HELP', 0 clear_string db 'CLEAR', 0 pong_string db 'PONG', 0 - help_text db 'This is CrawOS, type "HELP" for help, "CLEAR" to clear the screen', 0 + snake_string db 'SNAKE', 0 + help_text db 'This is for Cowards: "HELP" for this help text, "CLEAR" to clear the screen, esc to reboot', 0 command_result_text db 'You typed: ', 0 unknown_command db 'Error: Unkown Command.. ', 0 diff --git a/source/functions/math.asm b/source/kernel/features/disk.asm similarity index 100% rename from source/functions/math.asm rename to source/kernel/features/disk.asm diff --git a/source/features/graphics.asm b/source/kernel/features/graphics.asm similarity index 100% rename from source/features/graphics.asm rename to source/kernel/features/graphics.asm diff --git a/source/kernel/features/keyboard.asm b/source/kernel/features/keyboard.asm new file mode 100644 index 0000000..17dd3c8 --- /dev/null +++ b/source/kernel/features/keyboard.asm @@ -0,0 +1,77 @@ +; AX = key pressed +os_read_input: + mov ah, 11h ; BIOS call to check for key + int 16h ; Interrupt + jnz .key_pressed ; Jump if input isn't 0 + + hlt + jmp os_read_input + +.key_pressed: + mov ah, 10h + int 16h + ret + +; ------------------------------------------- + +os_display_input: + pusha + mov cx, [prompt_length] + +.loop: + call .check_key_pressed + + jmp .loop + +.check_key_pressed: + call os_read_input + + cmp al, 08h + je .backspace + + cmp al, 0Dh + je .enter_key + + cmp al, 1Bh + je .esc_key + + cmp cx, 0 + jb .check_key_pressed + + call .print_current_input + dec cx + jmp .check_key_pressed + +.esc_key: + call os_reboot + +.enter_key: + mov al, 0 + stosb + popa + call os_read_cli + +.backspace: + call .move_cursor_back ; then .move_cursor_back + call .loop ; Else .loop + +.move_cursor_back: + mov ah, 0Eh + + mov al, 08h + int 10h + mov al, 20h + int 10h + mov al, 08h + int 10h + + dec di + jmp os_display_input + +.print_current_input: + stosb + + mov ah, 0Eh + int 10h + + ret diff --git a/source/kernel/features/math.asm b/source/kernel/features/math.asm new file mode 100644 index 0000000..e69de29 diff --git a/source/features/power.asm b/source/kernel/features/power.asm similarity index 100% rename from source/features/power.asm rename to source/kernel/features/power.asm diff --git a/source/kernel/features/sound.asm b/source/kernel/features/sound.asm new file mode 100644 index 0000000..e69de29 diff --git a/source/features/strings.asm b/source/kernel/features/strings.asm similarity index 100% rename from source/features/strings.asm rename to source/kernel/features/strings.asm diff --git a/source/features/screen.asm b/source/kernel/features/text.asm similarity index 52% rename from source/features/screen.asm rename to source/kernel/features/text.asm index 894e367..584b16b 100755 --- a/source/features/screen.asm +++ b/source/kernel/features/text.asm @@ -68,82 +68,3 @@ os_set_text_mode: popa ret -; ------------------------------------------- - -; AX = key pressed -os_read_input: - mov ah, 11h ; BIOS call to check for key - int 16h ; Interrupt - jnz .key_pressed ; Jump if input isn't 0 - - hlt - jmp os_read_input - -.key_pressed: - mov ah, 10h - int 16h - ret - -; ------------------------------------------- - -os_display_input: - pusha - mov cx, [prompt_length] - -.loop: - call .check_key_pressed - - jmp .loop - -.check_key_pressed: - call os_read_input - - cmp al, 08h - je .backspace - - cmp al, 0Dh - je .enter_key - - cmp al, 1Bh - je .esc_key - - cmp cx, 0 - jb .check_key_pressed - - call .print_current_input - dec cx - jmp .check_key_pressed - -.esc_key: - call os_reboot - -.enter_key: - mov al, 0 - stosb - popa - call os_read_cli - -.backspace: - call .move_cursor_back ; then .move_cursor_back - call .loop ; Else .loop - -.move_cursor_back: - mov ah, 0Eh - - mov al, 08h - int 10h - mov al, 20h - int 10h - mov al, 08h - int 10h - - dec di - jmp os_display_input - -.print_current_input: - stosb - - mov ah, 0Eh - int 10h - - ret diff --git a/source/games/pong.asm b/source/kernel/games/pong.asm similarity index 64% rename from source/games/pong.asm rename to source/kernel/games/pong.asm index 852340e..71745a3 100644 --- a/source/games/pong.asm +++ b/source/kernel/games/pong.asm @@ -1,5 +1,5 @@ game_pong: - call .draw_players + call .draw_screen call .detect_input ; Clears screen and draws both players and ball @@ -29,6 +29,18 @@ game_pong: mov [y_end], bx call os_draw_graphical_rectangle ; Draw player 1 +.draw_ball: + ; The ball + mov ax, [ball_x] + mov [x_start], ax + mov [x_end], ax + + mov bx, [ball_y] + mov [y_start], bx + mov [y_end], bx + + call os_draw_graphical_rectangle ; Draw the ball + ret ; Player 1 movements @@ -36,13 +48,11 @@ game_pong: mov dx, [p1_y] sub dx, 5 mov [p1_y], dx - call .draw_players jmp .detect_input .p1_down: mov dx, [p1_y] add dx, 5 mov [p1_y], dx - call .draw_players jmp .detect_input ; Player 2 movements @@ -50,18 +60,35 @@ game_pong: mov dx, [p2_y] sub dx, 5 mov [p2_y], dx - call .draw_players jmp .detect_input .p2_down: mov dx, [p2_y] add dx, 5 mov [p2_y], dx - call .draw_players jmp .detect_input ; Ball bouncing +; This should move the ball along one frame +; The ball moves 1 pixel per frame, however this is usually +; at an angle, so we need sin and cos .bounce_ball: + ; Change the x coords + fld dword [ball_angle] + fcos + fld dword [precise_ball_x] + faddp + frndint + fstp dword [ball_x] + ; Change the y coords + fld dword [ball_angle] + fsin + fld dword [precise_ball_y] + faddp + frndint + fstp dword [ball_y] + + ret .detect_input: call os_read_input @@ -80,6 +107,9 @@ game_pong: cmp al, 27h ; Pressed ''' (player 2 down) je .p2_down + call .bounce_ball + call .draw_screen + jmp .detect_input .finish: @@ -87,8 +117,13 @@ game_pong: call os_start_cli section .data - ball_x dw 5 - ball_y dw 5 + ball_x dw 100 + ball_y dw 100 + precise_ball_x dw 100 + precise_ball_y dw 100 + ball_angle dw 1 ; In radians + cos_ball_angle dw 0 + sin_ball_angle dw 0 p1_x dw 5 p1_y dw 5 diff --git a/source/kernel/games/snake.asm b/source/kernel/games/snake.asm new file mode 100644 index 0000000..7262772 --- /dev/null +++ b/source/kernel/games/snake.asm @@ -0,0 +1,94 @@ +game_snake: + call .draw_screen + call .detect_input + +.draw_screen: + call os_set_graphics_mode ; Clear screen +.draw_snake_loop: + mov ax, [snake_x] + mov [x_start], ax + mov [x_end], ax + + mov bx, [snake_y] + mov [y_start], bx + mov [y_end], bx + + call os_draw_graphical_rectangle + ret + +; Player 1 movements +.up: + mov dword [snake_direction], 0 + jmp .end_detect_input +.down: + mov dword [snake_direction], 2 + jmp .end_detect_input +.left: + mov dword [snake_direction], 3 + jmp .end_detect_input +.right: + mov dword [snake_direction], 1 + jmp .end_detect_input + +.move_up: + mov dx, [snake_y] + sub dx, 1 + mov [snake_y], dx + ret +.move_down: + mov dx, [snake_y] + add dx, 1 + mov [snake_y], dx + ret +.move_left: + mov dx, [snake_x] + sub dx, 1 + mov [snake_x], dx + ret +.move_right: + mov dx, [snake_x] + add dx, 1 + mov [snake_x], dx + ret + +.move_snake: + cmp dword [snake_direction], 0 + je .move_up + cmp dword [snake_direction], 1 + je .move_right + cmp dword [snake_direction], 2 + je .move_down + ; Else it must be left + jmp .move_left + + +.detect_input: + call os_read_input + cmp al, 08h + je .finish + + ; Player 1 + cmp al, 77h ; Pressed 'w' up + je .up + cmp al, 61h ; Pressed 'a' left + je .left + cmp al, 73h ; Pressed 's' down + je .down + cmp al, 64h ; Pressed 'd' right + je .right +.end_detect_input: + call .move_snake + call .draw_screen + + jmp .detect_input + +.finish: + call os_set_text_mode + call os_start_cli + + +section .data: + snake_x: dw 5 + snake_y: dw 5 + snake_direction: dw 1 ; 0=up, 1=right, 2=down, 3=left + snake_length: dw 1 diff --git a/source/kernel/kernel.asm b/source/kernel/kernel.asm new file mode 100644 index 0000000..a3dfd28 --- /dev/null +++ b/source/kernel/kernel.asm @@ -0,0 +1,32 @@ +ORG 0h +BITS 16 + +start: + mov si, boot_message + call os_print_string_nl + + mov si, help_text + call os_print_string_nl + + call os_start_cli + hlt + +halt: + jmp halt + +boot_message: db 0Dh, 'Welcome to CrawOS!', 0Dh, 0 + +; ------------------------------------------------------------------ +; FEATURES -- Code to pull into the kernel + %INCLUDE "source/kernel/features/text.asm" + %INCLUDE "source/kernel/features/keyboard.asm" + %INCLUDE "source/kernel/features/cli.asm" + %INCLUDE "source/kernel/features/power.asm" + %INCLUDE "source/kernel/features/strings.asm" + %INCLUDE "source/kernel/features/graphics.asm" + %INCLUDE "source/kernel/features/sound.asm" + %INCLUDE "source/kernel/features/basic.asm" + %INCLUDE "source/kernel/features/math.asm" +; GAMES -- Games that I wrote for it + %INCLUDE "source/kernel/games/pong.asm" + %INCLUDE "source/kernel/games/snake.asm"