Moved stuff around and added a makefile also got a custom bootloader
based on the JazzOS bootloader (modified a bit)
This commit is contained in:
689
LICENSE
689
LICENSE
@@ -1,37 +1,674 @@
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|||||||
==================================================================
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GNU GENERAL PUBLIC LICENSE
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||||||
MikeOS -- License
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Version 3, 29 June 2007
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||||||
==================================================================
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Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
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Everyone is permitted to copy and distribute verbatim copies
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|
of this license document, but changing it is not allowed.
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|
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Copyright (C) 2006 - 2020 MikeOS Developers -- http://mikeos.sourceforge.net
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Preamble
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All rights reserved.
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The GNU General Public License is a free, copyleft license for
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software and other kinds of works.
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Redistribution and use in source and binary forms, with or without
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The licenses for most software and other practical works are designed
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modification, are permitted provided that the following conditions are met:
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to take away your freedom to share and change the works. By contrast,
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the GNU General Public License is intended to guarantee your freedom to
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share and change all versions of a program--to make sure it remains free
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|
software for all its users. We, the Free Software Foundation, use the
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GNU General Public License for most of our software; it applies also to
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any other work released this way by its authors. You can apply it to
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your programs, too.
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* Redistributions of source code must retain the above copyright
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When we speak of free software, we are referring to freedom, not
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THIS SOFTWARE IS PROVIDED BY MIKEOS DEVELOPERS AND CONTRIBUTORS "AS IS"
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For the developers' and authors' protection, the GPL clearly explains
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==================================================================
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If you convey an object code work under this section in, or with, or
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|
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|
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|
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The requirement to provide Installation Information does not include a
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|
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.
|
||||||
|
|
||||||
|
<one line to give the program's name and a brief idea of what it does.>
|
||||||
|
Copyright (C) <year> <name of author>
|
||||||
|
|
||||||
|
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 <https://www.gnu.org/licenses/>.
|
||||||
|
|
||||||
|
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:
|
||||||
|
|
||||||
|
<program> Copyright (C) <year> <name of author>
|
||||||
|
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
|
||||||
|
<https://www.gnu.org/licenses/>.
|
||||||
|
|
||||||
|
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
|
||||||
|
<https://www.gnu.org/licenses/why-not-lgpl.html>.
|
||||||
|
|||||||
25
Makefile
Normal file
25
Makefile
Normal file
@@ -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
|
||||||
@@ -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
|
if test "`whoami`" != "root" ; then
|
||||||
echo "You must be logged in as root to build (for loopback mounting)"
|
echo "You must be logged in as root to build (for loopback mounting)"
|
||||||
echo "Enter 'su' or 'sudo bash' to switch to root"
|
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
|
nasm -O0 -w+orphan-labels -f bin -o kernel.bin kernel.asm || exit
|
||||||
cd ..
|
cd ..
|
||||||
|
|
||||||
|
|
||||||
echo ">>> Assembling programs..."
|
|
||||||
|
|
||||||
|
|
||||||
echo ">>> Adding bootloader to floppy image..."
|
echo ">>> Adding bootloader to floppy image..."
|
||||||
|
|
||||||
dd status=noxfer conv=notrunc if=source/bootload/bootload.bin of=disk_images/crawos.flp || exit
|
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/
|
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
|
sleep 0.2
|
||||||
|
|
||||||
@@ -62,9 +48,9 @@ rm -rf tmp-loop
|
|||||||
echo ">>> Creating CD-ROM ISO image..."
|
echo ">>> Creating CD-ROM ISO image..."
|
||||||
|
|
||||||
rm -f disk_images/crawos.iso
|
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!'
|
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
|
||||||
|
|
||||||
|
|||||||
117
build-macos.sh
117
build-macos.sh
@@ -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"
|
|
||||||
@@ -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!'
|
|
||||||
|
|
||||||
40
buildwin.bat
40
buildwin.bat
@@ -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!
|
|
||||||
1
data/hello-world.cr
Normal file
1
data/hello-world.cr
Normal file
@@ -0,0 +1 @@
|
|||||||
|
output 'Hello World'
|
||||||
BIN
disk_images/boot.bin
Normal file
BIN
disk_images/boot.bin
Normal file
Binary file not shown.
BIN
disk_images/crawos.flp → disk_images/crawos.img
Executable file → Normal file
BIN
disk_images/crawos.flp → disk_images/crawos.img
Executable file → Normal file
Binary file not shown.
Binary file not shown.
BIN
disk_images/kernel.bin
Normal file
BIN
disk_images/kernel.bin
Normal file
Binary file not shown.
Binary file not shown.
Binary file not shown.
Binary file not shown.
297
source/bootload/boot.asm
Normal file
297
source/bootload/boot.asm
Normal file
@@ -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:
|
||||||
@@ -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)
|
|
||||||
|
|
||||||
|
|
||||||
; ==================================================================
|
|
||||||
|
|
||||||
Binary file not shown.
@@ -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
|
|
||||||
@@ -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
|
|
||||||
; ==================================================================
|
|
||||||
|
|
||||||
Binary file not shown.
@@ -40,6 +40,12 @@ os_read_cli:
|
|||||||
cmp cl, 1
|
cmp cl, 1
|
||||||
je pong
|
je pong
|
||||||
|
|
||||||
|
mov si, user_input
|
||||||
|
mov di, snake_string
|
||||||
|
call os_compare_strings
|
||||||
|
cmp cl, 1
|
||||||
|
je snake
|
||||||
|
|
||||||
jmp .unkown
|
jmp .unkown
|
||||||
|
|
||||||
.unkown:
|
.unkown:
|
||||||
@@ -66,13 +72,19 @@ pong:
|
|||||||
call game_pong
|
call game_pong
|
||||||
call os_read_cli.finish
|
call os_read_cli.finish
|
||||||
|
|
||||||
|
snake:
|
||||||
|
call game_snake
|
||||||
|
call os_read_cli.finish
|
||||||
|
|
||||||
section .data
|
section .data
|
||||||
|
welcome_text db 'Welcome to CrawOS, the Cool, Real and AWsome Operating System', 0
|
||||||
user_input times 20 db 0
|
user_input times 20 db 0
|
||||||
prompt_length db 20
|
prompt_length db 20
|
||||||
prompt db 'CrawOS: ', 0
|
prompt db 'CrawOS sh> ', 0
|
||||||
help_string db 'HELP', 0
|
help_string db 'HELP', 0
|
||||||
clear_string db 'CLEAR', 0
|
clear_string db 'CLEAR', 0
|
||||||
pong_string db 'PONG', 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
|
command_result_text db 'You typed: ', 0
|
||||||
unknown_command db 'Error: Unkown Command.. ', 0
|
unknown_command db 'Error: Unkown Command.. ', 0
|
||||||
77
source/kernel/features/keyboard.asm
Normal file
77
source/kernel/features/keyboard.asm
Normal file
@@ -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
|
||||||
0
source/kernel/features/math.asm
Normal file
0
source/kernel/features/math.asm
Normal file
0
source/kernel/features/sound.asm
Normal file
0
source/kernel/features/sound.asm
Normal file
@@ -68,82 +68,3 @@ os_set_text_mode:
|
|||||||
popa
|
popa
|
||||||
ret
|
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
|
|
||||||
@@ -1,5 +1,5 @@
|
|||||||
game_pong:
|
game_pong:
|
||||||
call .draw_players
|
call .draw_screen
|
||||||
call .detect_input
|
call .detect_input
|
||||||
|
|
||||||
; Clears screen and draws both players and ball
|
; Clears screen and draws both players and ball
|
||||||
@@ -29,6 +29,18 @@ game_pong:
|
|||||||
mov [y_end], bx
|
mov [y_end], bx
|
||||||
|
|
||||||
call os_draw_graphical_rectangle ; Draw player 1
|
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
|
ret
|
||||||
|
|
||||||
; Player 1 movements
|
; Player 1 movements
|
||||||
@@ -36,13 +48,11 @@ game_pong:
|
|||||||
mov dx, [p1_y]
|
mov dx, [p1_y]
|
||||||
sub dx, 5
|
sub dx, 5
|
||||||
mov [p1_y], dx
|
mov [p1_y], dx
|
||||||
call .draw_players
|
|
||||||
jmp .detect_input
|
jmp .detect_input
|
||||||
.p1_down:
|
.p1_down:
|
||||||
mov dx, [p1_y]
|
mov dx, [p1_y]
|
||||||
add dx, 5
|
add dx, 5
|
||||||
mov [p1_y], dx
|
mov [p1_y], dx
|
||||||
call .draw_players
|
|
||||||
jmp .detect_input
|
jmp .detect_input
|
||||||
|
|
||||||
; Player 2 movements
|
; Player 2 movements
|
||||||
@@ -50,18 +60,35 @@ game_pong:
|
|||||||
mov dx, [p2_y]
|
mov dx, [p2_y]
|
||||||
sub dx, 5
|
sub dx, 5
|
||||||
mov [p2_y], dx
|
mov [p2_y], dx
|
||||||
call .draw_players
|
|
||||||
jmp .detect_input
|
jmp .detect_input
|
||||||
.p2_down:
|
.p2_down:
|
||||||
mov dx, [p2_y]
|
mov dx, [p2_y]
|
||||||
add dx, 5
|
add dx, 5
|
||||||
mov [p2_y], dx
|
mov [p2_y], dx
|
||||||
call .draw_players
|
|
||||||
jmp .detect_input
|
jmp .detect_input
|
||||||
|
|
||||||
; Ball bouncing
|
; 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:
|
.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:
|
.detect_input:
|
||||||
call os_read_input
|
call os_read_input
|
||||||
@@ -80,6 +107,9 @@ game_pong:
|
|||||||
cmp al, 27h ; Pressed ''' (player 2 down)
|
cmp al, 27h ; Pressed ''' (player 2 down)
|
||||||
je .p2_down
|
je .p2_down
|
||||||
|
|
||||||
|
call .bounce_ball
|
||||||
|
call .draw_screen
|
||||||
|
|
||||||
jmp .detect_input
|
jmp .detect_input
|
||||||
|
|
||||||
.finish:
|
.finish:
|
||||||
@@ -87,8 +117,13 @@ game_pong:
|
|||||||
call os_start_cli
|
call os_start_cli
|
||||||
|
|
||||||
section .data
|
section .data
|
||||||
ball_x dw 5
|
ball_x dw 100
|
||||||
ball_y dw 5
|
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_x dw 5
|
||||||
p1_y dw 5
|
p1_y dw 5
|
||||||
94
source/kernel/games/snake.asm
Normal file
94
source/kernel/games/snake.asm
Normal file
@@ -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
|
||||||
32
source/kernel/kernel.asm
Normal file
32
source/kernel/kernel.asm
Normal file
@@ -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"
|
||||||
Reference in New Issue
Block a user