Apple-2-SW/Applecorn
1
0
Fork 0
mirror of https://github.com/bobbimanners/Applecorn.git synced 2024-06-04 10:29:32 +00:00
Code Issues Projects Releases Wiki Activity

Fix stack screwup in ZipChip code.

Browse Source
This commit is contained in:
Bobbi Webber-Manners 2022-09-23 23:17:32 -04:00
parent dc2a198ff1
commit dc5faabd66
2 changed files with 5 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

BIN
applecorn.po
View File

Binary file not shown.

11
auxmem.oscli.s
View File

@ -762,8 +762,6 @@ FAST LDA #$80 ; Apple IIgs
STA $C05C ; Ultrawarp fast
JSR UNLOCKZIP ; ZipChip
STA $C05B ; Enable
LDA #$00 ; Full speed
STA $C05D
JSR LOCKZIP
RTS
@ -775,14 +773,14 @@ SLOW LDA #$80 ; Apple IIgs
STZ GSSPEED
STA $C05D ; Ultrawarp slow
JSR UNLOCKZIP ; ZipChip
STA $C05B ; Enable
LDA #$D0 ; 1.0667MHz
STA $C05D
STZ $C05A ; Disable
JSR LOCKZIP
RTS
* Unlock ZipChip registers
UNLOCKZIP LDA #$5A
UNLOCKZIP PHP
SEI ; Timing sensitive
LDA #$5A
STA $C05A
STA $C05A
STA $C05A
@ -792,6 +790,7 @@ UNLOCKZIP LDA #$5A
* Lock ZipChip registers
LOCKZIP LDA #$A5
STA $C05A
PLP
RTS