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; Simple printing module.
;
; Copyright (C) 2012 Patrik Rak (patrik@raxoft.cz)
;
; This source code is released under the MIT license, see included license.txt.
printinit: ld a,2
jp 0x1601 ; CHAN-OPEN
print: ex (sp),hl
call printhl
ex (sp),hl
ret
printhl:
.loop ld a,(hl)
inc hl
or a
ret z
call printchr
jr .loop
printdeca: ld h,a
ld b,-100
call .digit
ld b,-10
call .digit
ld b,-1
.digit ld a,h
ld l,'0'-1
.loop inc l
add a,b
jr c,.loop
sub b
ld h,a
ld a,l
jr printchr
printcrc: ld b,4
printhexs:
.loop ld a,(hl)
inc hl
call printhexa
djnz .loop
ret
printhexa: push af
rrca
rrca
rrca
rrca
call .nibble
pop af
.nibble or 0xf0
daa
add a,0xa0
adc a,0x40
printchr: push iy
ld iy,0x5c3a ; ERR-NR
push de
push bc
exx
ei
; out (0xff),a
rst 0x10
di
exx
pop bc
pop de
pop iy
ret
; EOF ;