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BIT c030

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Change STA $C030 to BIT, which should be nondestructive to RAM during
rests. Thanks, Antoine Vignau.
This commit is contained in:
Charles Mangin 2016-09-17 18:02:36 -04:00
parent 58521598ab
commit 9497226676
1 changed files with 2 additions and 2 deletions
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README.md
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@ -15,13 +15,13 @@ Everything is in this README, since it's small enough to copy and paste into an
030D- EA NOP ; wait... 030D- EA NOP ; wait...
030E- EA NOP ; 030E- EA NOP ;
030F- D0 05 BNE $0316 ; if X = 0, click. otherwise, skip 030F- D0 05 BNE $0316 ; if X = 0, click. otherwise, skip
0311- 8D 30 C0 STA $C030 ; click 0311- 2C 30 C0 BIT $C030 ; click
0314- A6 FB LDX $FB ; reset X to beginning of countdown 0314- A6 FB LDX $FB ; reset X to beginning of countdown
0316- C6 FE DEC $FE ; countdown second oscillator, $FE 0316- C6 FE DEC $FE ; countdown second oscillator, $FE
0318- EA NOP ; wait... 0318- EA NOP ; wait...
0319- EA NOP ; 0319- EA NOP ;
031A- D0 07 BNE $0323 ; if $FE = 0, click. otherwise, skip 031A- D0 07 BNE $0323 ; if $FE = 0, click. otherwise, skip
031C- 8D 30 C0 STA $C030 ; click 031C- 2C 30 C0 BIT $C030 ; click
031F- A5 FD LDA $FD ; reset $FE to beginning of countdown 031F- A5 FD LDA $FD ; reset $FE to beginning of countdown
0321- 85 FE STA $FE ; 0321- 85 FE STA $FE ;
0323- 88 DEY ; countdown duration 0323- 88 DEY ; countdown duration