diff options
Diffstat (limited to 'home/serial.asm')
| -rw-r--r-- | home/serial.asm | 40 |
1 files changed, 20 insertions, 20 deletions
diff --git a/home/serial.asm b/home/serial.asm index 7a515118..6c412239 100644 --- a/home/serial.asm +++ b/home/serial.asm @@ -91,79 +91,79 @@ Serial_ExchangeByte:: ld [hSerialReceivedNewData], a ld a, [hSerialConnectionStatus] cp USING_INTERNAL_CLOCK - jr nz, .asm_21a7 + jr nz, .loop ld a, START_TRANSFER_INTERNAL_CLOCK ld [rSC], a -.asm_21a7 +.loop ld a, [hSerialReceivedNewData] and a - jr nz, .asm_21f1 + jr nz, .ok ld a, [hSerialConnectionStatus] cp USING_EXTERNAL_CLOCK - jr nz, .asm_21cc + jr nz, .doNotIncrementUnknownCounter call IsUnknownCounterZero - jr z, .asm_21cc + jr z, .doNotIncrementUnknownCounter call WaitLoop_15Iterations push hl ld hl, wUnknownSerialCounter + 1 inc [hl] - jr nz, .asm_21c3 + jr nz, .noCarry dec hl inc [hl] -.asm_21c3 +.noCarry pop hl call IsUnknownCounterZero - jr nz, .asm_21a7 + jr nz, .loop jp SetUnknownCounterToFFFF -.asm_21cc +.doNotIncrementUnknownCounter ld a, [rIE] and (1 << SERIAL) | (1 << TIMER) | (1 << LCD_STAT) | (1 << VBLANK) cp (1 << SERIAL) - jr nz, .asm_21a7 + jr nz, .loop ld a, [wUnknownSerialCounter2] dec a ld [wUnknownSerialCounter2], a - jr nz, .asm_21a7 + jr nz, .loop ld a, [wUnknownSerialCounter2 + 1] dec a ld [wUnknownSerialCounter2 + 1], a - jr nz, .asm_21a7 + jr nz, .loop ld a, [hSerialConnectionStatus] cp USING_EXTERNAL_CLOCK - jr z, .asm_21f1 + jr z, .ok ld a, 255 .waitLoop dec a jr nz, .waitLoop -.asm_21f1 +.ok xor a ld [hSerialReceivedNewData], a ld a, [rIE] and (1 << SERIAL) | (1 << TIMER) | (1 << LCD_STAT) | (1 << VBLANK) sub (1 << SERIAL) - jr nz, .asm_2204 + jr nz, .skipReloadingUnknownCounter2 ld [wUnknownSerialCounter2], a ld a, $50 ld [wUnknownSerialCounter2 + 1], a -.asm_2204 +.skipReloadingUnknownCounter2 ld a, [hSerialReceiveData] cp SERIAL_NO_DATA_BYTE ret nz call IsUnknownCounterZero - jr z, .asm_221f + jr z, .done push hl ld hl, wUnknownSerialCounter + 1 ld a, [hl] dec a ld [hld], a inc a - jr nz, .asm_2219 + jr nz, .noBorrow dec [hl] -.asm_2219 +.noBorrow pop hl call IsUnknownCounterZero jr z, SetUnknownCounterToFFFF -.asm_221f +.done ld a, [rIE] and (1 << SERIAL) | (1 << TIMER) | (1 << LCD_STAT) | (1 << VBLANK) cp (1 << SERIAL) |