pokecrystal-board/home/handshake.asm
yenatch cf2acc1001 Use :: to export labels between objects.
This fixes the build.
2014-02-01 20:26:39 -05:00

39 lines
412 B
NASM

AskSerial:: ; 2063
; send out a handshake while serial int is off
ld a, [$c2d4]
bit 0, a
ret z
ld a, [$c2d5]
and a
ret nz
; once every 6 frames
ld hl, $ca8a
inc [hl]
ld a, [hl]
cp 6
ret c
xor a
ld [hl], a
ld a, $c
ld [$c2d5], a
; handshake
ld a, $88
ld [rSB], a
; switch to internal clock
ld a, %00000001
ld [rSC], a
; start transfer
ld a, %10000001
ld [rSC], a
ret
; 208a