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; Hello world. Load as a cartridge in openmsx. (openmsx hello.rom)
; Copyright 2005 Bas Wijnen <wijnen@debian.org>
;
; This file is part of z80asm.
;
; Z80asm 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.
;
; Z80asm 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 <http://www.gnu.org/licenses/>.
include 'msx-bios.asm' ; symbolic names for bios calls
; header for a rom
org 0x4000
db "AB"
dw start
text: db "This is the source which generated this program:\r\n"
incbin 'hello.asm'
db 0
start: ld a, 80
ld (0xf3ae), a ; width 80
xor a
call CHGMOD ; screen 0
ld hl, text
loop: ld a, (hl)
and a ; set the z flag if A is 0
jr z,stop ; and return in that case
call CHPUT
inc hl
jr loop
stop: jr stop
ds 0x8000 - $ ; fill up the rest of the page
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