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bcopy.asm
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bcopy.asm
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;
; Z80 WeirDOS 0.4
;
; bcopy.asm
;
; Bootstrap function for WeirDOS.
;
; The WDOS system image and BIOS is appended to this binary.
; It copies it to its runtime location and jumps to the cold
; boot routine in the BIOS.
;
;
; A Disk Operating System for Z80 microcomputers, implementing
; the CP/M 2.2 API and FAT12/FAT16 filesystems.
;
; Coptright (C) 2021 Alexis Kotlowy
;
; This file is part of WeirDOS (aka WDOS)
;
; WeirDOS 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.
;
; WeirDOS 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 WeirDOS. If not, see <https://www.gnu.org/licenses/>.
;
maclib Z80
MEMTOP equ 64 ; Top of memory (up to 64k)
NEWORG equ (MEMTOP-8)*1024
COLD equ (MEMTOP-4)*1024
phase 100h
lxi d, NEWORG ; copy to here
lxi h, begin
lxi b, 2000h ; Copy this much
ldir
jmp COLD
nop ; Make 16 bytes
nop
begin equ $
end