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collapseos/kernel/trs80/vid.asm

17 lines
237 B
NASM

; vid - TRS-80's video
;
; Implement PutC using TRS-80's SVC calls so that character it put on video
; display.
trs80PutC:
push af
push bc
push de ; altered by SVC
ld c, a
ld a, 0x02 ; @DSP
rst 0x28
pop de
pop bc
pop af
ret