diff options
Diffstat (limited to 'home/handshake.asm')
| -rw-r--r-- | home/handshake.asm | 43 |
1 files changed, 17 insertions, 26 deletions
diff --git a/home/handshake.asm b/home/handshake.asm index e53e78a5..c49bca22 100644 --- a/home/handshake.asm +++ b/home/handshake.asm @@ -1,50 +1,41 @@ -PrinterReceive:: ; 2057 - ld a, [hROMBank] - push af - ld a, BANK(_PrinterReceive) - rst Bankswitch - - call _PrinterReceive - pop af - rst Bankswitch - +PrinterReceive:: ; 1eb3 (0:1eb3) + homecall PrinterReceive_ ret -; 2063 -AskSerial:: ; 2063 +AskSerial:: ; 1ebf (0:1ebf) ; send out a handshake while serial int is off - ld a, [wc2d4] + ld a, [wPrinterConnectionOpen] bit 0, a ret z - - ld a, [wc2d5] + +; if we're still interpreting data, don't try to receive + ld a, [wPrinterOpcode] and a ret nz - + ; once every 6 frames - ld hl, wca8a + ld hl, wHandshakeFrameDelay inc [hl] ld a, [hl] cp 6 ret c - + xor a ld [hl], a - - ld a, $c - ld [wc2d5], a - + + ld a, 12 + ld [wPrinterOpcode], 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 |