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Added ZipChip support to *SLOW and *FAST.

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Bobbi Webber-Manners 2022-09-23 22:55:17 -04:00
parent 126bb4dbf0
commit dc2a198ff1
2 changed files with 23 additions and 1 deletions
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applecorn.po
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24
auxmem.oscli.s
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@ -760,6 +760,11 @@ FAST LDA #$80 ; Apple IIgs
TSB $C036
STA GSSPEED
STA $C05C ; Ultrawarp fast
JSR UNLOCKZIP ; ZipChip
STA $C05B ; Enable
LDA #$00 ; Full speed
STA $C05D
JSR LOCKZIP
RTS
*
@ -769,6 +774,24 @@ SLOW LDA #$80 ; Apple IIgs
TRB $C036
STZ GSSPEED
STA $C05D ; Ultrawarp slow
JSR UNLOCKZIP ; ZipChip
STA $C05B ; Enable
LDA #$D0 ; 1.0667MHz
STA $C05D
JSR LOCKZIP
RTS
* Unlock ZipChip registers
UNLOCKZIP LDA #$5A
STA $C05A
STA $C05A
STA $C05A
STA $C05A
RTS
* Lock ZipChip registers
LOCKZIP LDA #$A5
STA $C05A
RTS
@ -777,4 +800,3 @@ SLOW LDA #$80 ; Apple IIgs