This page (revision-5) was last changed on 03-Feb-2023 15:21 by Carsten Strotmann 

This page was created on 29-Jul-2010 10:12 by Carsten Strotmann

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Page revision history

Version Date Modified Size Author Changes ... Change note
5 03-Feb-2023 15:21 1 KB Carsten Strotmann to previous
4 26-Feb-2017 15:02 1 KB Carsten Strotmann to previous | to last
3 26-Feb-2017 15:02 1 KB Carsten Strotmann to previous | to last
2 29-Jul-2010 10:50 1 KB Carsten Strotmann to previous | to last
1 29-Jul-2010 10:12 638 bytes Carsten Strotmann to last

Page References

Incoming links Outgoing links
Implementations of NEXT on 6502
Implementations of NEXT on 6502

Version management

Difference between version and

At line 26 changed 17 lines
LDA (IP),Y
STA W+1
DEY
LDA (IP),Y
STA W
LDA (W),Y
STA TMP
INY
LDA (W),Y
STA TMP+1
DEY
CLC
LDA IP
ADC #2
STA IP
BCC L816E
INC IP+1
LDA (IP),Y
STA W+1
DEY
LDA (IP),Y
STA W
LDA (W),Y
STA TMP
INY
LDA (W),Y
STA TMP+1
DEY
CLC
LDA IP
ADC #2
STA IP
BCC L816E
INC IP+1
At line 46 added 27 lines
! FOCO65
{{{
next
ldy #0
lda (ip),y ; lade naechste Adresse (IP=Instruction Pointer)
sta w ; und speichere in die Speicherstelle "w"
iny
lda (ip),y
sta w+1
lda #2 ; den Instruction-Pointer um zwei erhoehen, so das
clc ; dieser auf den naechsten Befehl zeigt
adc ip
sta ip
lda #0
adc ip+1
sta ip+1
ldy #0
lda (w),y ; Sprung-Adresse des naechsten Befehls laden
sta z ; und in die Speicherstelle "z" schreiben
iny
lda (w),y
sta z+1
jmp (z) ; indirekt an die Adresse in Speicherstelle "z"
; springen
}}}
This page (revision-5) was last changed on 03-Feb-2023 15:21 by Carsten Strotmann  Top