Apple-2-SW/dos33fsprogs
1
0
Fork 0
mirror of https://github.com/deater/dos33fsprogs.git synced 2024-08-12 12:29:04 +00:00
Code Issues Projects Releases Wiki Activity

pt3: make negating code more efficient

Browse Source 
vmw: fix a L/H typo that was causing validation test fail
This commit is contained in:
Peter Ferrie 2019-06-02 23:52:47 -04:00 committed by Vince Weaver
parent c4da336e98
commit 77007cfdb5
1 changed files with 4 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
pt3_player/pt3_lib.s
View File

@ -1529,17 +1529,15 @@ weird_version:
; a->tone_slide_step = -a->tone_slide_step;
lda note_a+NOTE_TONE_SLIDE_STEP_H,X
eor #$ff
sta note_a+NOTE_TONE_SLIDE_STEP_H,X
lda note_a+NOTE_TONE_SLIDE_STEP_L,X
eor #$ff
clc
adc #$1
sta note_a+NOTE_TONE_SLIDE_STEP_L,X
bcc skip_step_inc2
inc note_a+NOTE_TONE_SLIDE_STEP_H,X
skip_step_inc2:
lda note_a+NOTE_TONE_SLIDE_STEP_H,X
eor #$ff
adc #$0
sta note_a+NOTE_TONE_SLIDE_STEP_H,X
no_need: