6502/PLASMA
1
0
Fork 0
mirror of https://github.com/dschmenk/PLASMA.git synced 2025-01-22 08:31:36 +00:00
Code Issues Projects Releases Wiki Activity

The branch op code I was looking for

Browse Source
This commit is contained in:
David Schmenk 2018-01-20 10:30:14 -08:00
parent 934c52cf4d
commit 3807a29fc9
2 changed files with 7 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
src/vmsrc/plvm02.s
View File

@ -1363,24 +1363,22 @@ BRFLS INX
ORA ESTKL-1,X
BNE NOBRNCH
BRNCH TYA ; FLATTEN IP
CLC
SEC
ADC IPL
STA TMPL
LDA #$00
TAY
ADC IPH
STA TMPH ; ADD BRANCH OFFSET
INY
LDA (IP),Y
LDA (TMP),Y
CLC
ADC TMPL
STA TMPL
STA IPL
INY
LDA (IP),Y
LDA (TMP),Y
ADC TMPH
STA IPH
LDA TMPL
STA IPL
LDY #$01
DEY
JMP FETCHOP
BREQ INX
LDA ESTKL-1,X

2
src/vmsrc/plvm802.s
View File

@ -1285,7 +1285,7 @@ BRNCH TYA ; FLATTEN IP
CLC
ADC IP
INY ;+INC_IP
CLC ; ADD BRANCH OFFSET
;CLC ; ADD BRANCH OFFSET (BETTER NOT CARRY OUT OF IP+Y)
ADC (IP),Y
STA IP
LDY #$01