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Reduce AY access times some more.

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tomcw 2020-09-06 10:53:50 +01:00
parent 581c02e7dd
commit 8e100ae88a
1 changed files with 18 additions and 5 deletions
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23
CybernoidTest/Cybernoid.a
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@ -58,6 +58,13 @@ GotMBSlot:
stx MB4+2
stx MB5+2
stx MB6+2
stx MB1x+2
stx MB2x+2
stx MB3x+2
stx MB4x+2
stx MB5x+2
stx MB6x+2
}
stx MB7+2
@ -198,12 +205,18 @@ Interrupt
lda AYDataDoneFlag
bne .done
ldx #0
ldx #AY_INACTIVE
ldy #0
.sf_loop0 tya
jsr SF_SelectReg
.smcAYData lda (pAYData),y
jsr SF_WriteReg
.sf_loop0
MB1x sty CARD_BASE+SY6522_ORA
lda #AY_LATCH
MB2x sta CARD_BASE+SY6522_ORB
MB3x stx CARD_BASE+SY6522_ORB ; Set INACTIVE
lda (pAYData),y
MB4x sta CARD_BASE+SY6522_ORA
lda #AY_WRITE
MB5x sta CARD_BASE+SY6522_ORB
MB6x stx CARD_BASE+SY6522_ORB ; Set INACTIVE
iny
cpy #$0E
bne .sf_loop0