mirror of https://github.com/a2-4am/anti-m.git
Merge pull request #23 from peterferrie/master
support Computer Foosball
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commit
78d3f73816
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@ -236,7 +236,7 @@ StringTable
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!word @mainmenu
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@header
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!text "Anti-M v1.4-pre by 4am 2019-05-13"
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!text "Anti-M v1.4-pre by 4am 2019-05-22"
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!text "________________________________________",$8D
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!text $8D,$8D,$8D,$8D,$8D,$8D,$8D,$8D,$00
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@mainmenu
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@ -5,6 +5,7 @@
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; - Beer Run
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; - Gamma Goblins
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; - Orbitron
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; - Computer Foosball
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;
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IDSirius
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lda #8
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@ -18,7 +19,7 @@ IDSirius
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!byte $A6,$2B ;LDX $2B
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!byte $A9,$04 ;LDA #$04
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!byte $85,$11 ;STA $11
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bcs @exit
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bcs @trySirius2
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; patch code to regain control after it loads sectors into $400+
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ldy #@callback1_e-@callback1
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@ -40,6 +41,34 @@ IDSirius
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@exit
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rts
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@trySirius2
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lda #8
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ldx #1
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ldy #20
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jsr CompareMemory
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!byte $AD,$52,$C0 ;STA $C052
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!byte $AD,$57,$C0 ;STA $C057
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!byte $AD,$55,$C0 ;STA $C055
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!byte $AD,$50,$C0 ;STA $C050
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!byte $A0,$00 ;LDY #$00
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!byte $84,$00 ;STY $00
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!byte $A9,$D0 ;LDA #$D0
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!byte $85,$01 ;STA $01
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bcs @exit2
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; patch code to regain control after it loads sectors into $400+
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ldy #@callback3_e-@callback3
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- lda @callback3-1,y
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sta @callback3x-1,y
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dey
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bne -
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ldx #<@callback3x
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stx $0867
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ldy #>@callback3x
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sty $0868
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@exit2
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rts
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@callback1 !pseudopc $300 {
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@callback1x
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; replace undocumented opcode with stack pointer restore
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@ -96,3 +125,19 @@ IDSirius
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rts
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}
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@callback1_e
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@callback3 !pseudopc $BF00 {
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@callback3x
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; disable ROM check entirely
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ldx #$60
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lda $69A
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cmp #$AD
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bne +
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stx $69A
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jmp $400
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; two different versions
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+ stx $706
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jmp $400
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}
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@callback3_e
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