a bit smaller, another attempt at 65c02 VM

2024-08-21 06:29:07 +00:00 · 2018-01-30 16:27:18 -08:00 · 2018-01-30 16:27:18 -08:00 · 3c36438333
commit 3c36438333
parent 88471f94f0
3 changed files with 1485 additions and 5 deletions
--- a/src/vmsrc/cmd.pla
+++ b/src/vmsrc/cmd.pla
@ -808,7 +808,7 @@ asm reloc(modfix, modofst, bytecode, rld)#3
        PLA
        AND     #$10        ; EXTERN REF - EXIT
        BNE     RLDEX
-        LDY     #$00        ; FIXUP=*ADDR+MODOFST
+        TAY                 ; FIXUP=*ADDR+MODOFST
        LDA     (DST),Y
        INY
        CLC
--- a/src/vmsrc/plvm02.s
+++ b/src/vmsrc/plvm02.s
@ -698,15 +698,13 @@ LNOT    LDA     ESTKL,X
        ORA     ESTKH,X
        BNE     +
        LDA     #$FF
-        STA     ESTKL,X
-        STA     ESTKH,X
-        JMP     NEXTOP
+        BNE     ++
 ;*
 ;* CONSTANT
 ;*
 ZERO    DEX
 +       LDA     #$00
-        STA     ESTKL,X
++      STA     ESTKL,X
        STA     ESTKH,X
        JMP     NEXTOP
 CFFB    LDA     #$FF
--- a/src/vmsrc/plvmc02.s
+++ b/src/vmsrc/plvmc02.s