mirror of https://github.com/a2-4am/4cade.git
56 lines
1.1 KiB
Plaintext
56 lines
1.1 KiB
Plaintext
;license:MIT
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;(c) 2020-2021 by qkumba
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!cpu 6502
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!to "build/PRELAUNCH.INDEXED/BEJEWELED",plain
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*=$106
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!source "src/prelaunch/common.a"
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+ENABLE_ACCEL
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lda #<callback
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sta $467F
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lda #>callback
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sta $4680
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jmp $800 ; decompress
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helper
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lda $89A0
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cmp #$CB ; write file
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bne nohelp
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lda $8DB5 ; write address (low)
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cmp #$F3 ; erasing save
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beq nohelp
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cmp #$F5 ; writing "valid"
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beq nocall ; ignore it
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cmp #$5E ; writing options
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beq nohelp
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dec $8DB5 ; write address (low)
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nohelp
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jmp $FDFD ; SMC
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nocall
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plp
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pla
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pla
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clc
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rts
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callback
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jsr $BE00
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lda $BF0B
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sta nohelp + 1
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lda $BF0C
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sta nohelp + 2
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lda #<helper
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sta $BF0B
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lda #>helper
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sta $BF0C
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+DISABLE_ACCEL
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rts
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!if * > $1C0 {
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!error "code is too large, ends at ", *
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}
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