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This commit is contained in:
YamaArashi 2016-06-12 11:35:21 -07:00
parent 3a6a300da4
commit 3ab3f4273b
7 changed files with 150 additions and 131 deletions
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40
home/serial.asm
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@ -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)