License and readme

source/kernel.asm

@@ -1,14 +1,3 @@
-; ==================================================================
-; MikeOS -- The Mike Operating System kernel
-; Copyright (C) 2006 - 2022 MikeOS Developers -- see doc/LICENSE.TXT
-;
-; This is loaded from the drive by BOOTLOAD.BIN, as KERNEL.BIN.
-; First we have the system call vectors, which start at a static point
-; for programs to use. Following that is the main kernel code and
-; then additional system call code is included.
-; ==================================================================
-
-
 	BITS 16
 	CPU 386				; pusha offsets depends on a 386 or better
 					; FS and GS require a 386 or better
@@ -24,22 +13,6 @@
 	disk_buffer	equ	24576
 
 
-; ------------------------------------------------------------------
-; OS CALL VECTORS -- Static locations for system call vectors
-; Note: these cannot be moved, or it'll break the calls!
-
-; The comments show exact locations of instructions in this section,
-; and are used in programs/mikedev.inc so that an external program can
-; use a CrawOS system call without having to know its exact position
-; in the kernel source code...
-
-os_call_vectors:
-	jmp os_main			; 0000h -- Called from bootloader
-	jmp os_print_string		; 0003h
-	jmp os_read_input
-	jmp os_display_input
-	jmp os_start_cli
-
 
 ; ------------------------------------------------------------------
 ; START OF MAIN KERNEL CODE
@@ -62,16 +35,6 @@ os_main:
 
 	cmp dl, 0
 	je no_change
-	mov [bootdev], dl		; Save boot device number
-	push es
-	mov ah, 8			; Get drive parameters
-	int 13h
-	pop es
-	and cx, 3Fh			; Maximum sector number
-	mov [SecsPerTrack], 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:
 	call os_clear_screen