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WIP drive 2 DOS patching

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This commit is contained in:
Peter Ferrie 2019-04-10 14:17:31 -07:00
parent 7544097c24
commit cf7cdba3e6
1 changed files with 108 additions and 1 deletions
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109
src/idboot.a
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@ -69,6 +69,8 @@ IDBoot
inc $86D2
- lda @decode53,y
sta $86D5,y
lda @decode53+$100,y
sta $86D5+$100,y
iny
bne -
lda #$02
@ -91,10 +93,15 @@ IDBoot
tay
iny
sty @patch53+1
ldx #0
ldy $8FE
tya
pha
lda #$FF
pha
iny
tya
ldx #<@callback53_2
ldy #>@callback53_2
bne -
@decode53 !pseudopc $86D5 {
@ -162,4 +169,104 @@ IDBoot
bcs +
jmp $865D
+ jmp ($44)
@CompareMemoryRel
sta cmp1+1
stx cmp1
pla
sta cmp2
pla
sta cmp2+1
tax
tya
clc
adc cmp2
bcc +
inx
+ sta tmp
txa
pha
lda tmp
pha
.cmp
lda (cmp2),y
dey
bmi .success
cmp (cmp1),y
beq .cmp
cmp #WILDCARD
beq .cmp
sec
!byte $24 ; hide CLC
.success clc
lda cmp1+1
ldx cmp1
rts
@callback53_2
lda #$29
ldx #$6E
ldy #8
jsr @CompareMemoryRel
!byte $BD,$8A,$C0 ;LDA $C08A,X
!byte $B0,$03 ;BCS *+5
!byte $BD,$8B,$C0 ;LDA $C08B,X
bcs @notinfocom
inc $296F
rts
@notinfocom
lda #$3D
ldx #$5F
ldy #8
jsr @CompareMemoryRel
!byte $BD,$8A,$C0 ;LDA $C08A,X
!byte $B0,$03 ;BCS *+5
!byte $BD,$8B,$C0 ;LDA $C08B,X
bcs @notdos32a
inc $3D60
ldx #$60
rts
@notdos32a
lda #$BD
ldx #$6E
ldy #8
jsr @CompareMemoryRel
!byte $BD,$8A,$C0 ;LDA $C08A,X
!byte $B0,$03 ;BCS *+5
!byte $BD,$8B,$C0 ;LDA $C08B,X
bcs @notdos32b
inc $BD6F
ldx #$60
rts
@notdos32b
lda #$3D
ldx #$6E
ldy #8
jsr @CompareMemoryRel
!byte $BD,$8A,$C0 ;LDA $C08A,X
!byte $B0,$03 ;BCS *+5
!byte $BD,$8B,$C0 ;LDA $C08B,X
bcs @notdos32c
inc $3D6F
ldx #$60
rts
@notdos32c
lda #$BD
ldx #$5F
ldy #8
jsr @CompareMemoryRel
!byte $BD,$8A,$C0 ;LDA $C08A,X
!byte $B0,$03 ;BCS *+5
!byte $BD,$8B,$C0 ;LDA $C08B,X
bcs @notdos32d
inc $BD60
ldx #$60
rts
@notdos32d
rts
}