mirror of https://github.com/a2-4am/4cade.git
55 lines
1.1 KiB
Plaintext
55 lines
1.1 KiB
Plaintext
;license:MIT
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;(c) 2021-2022 by Frank M., qkumba
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!cpu 6502
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!to "build/PRELAUNCH.INDEXED/MARAUDER",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 #$60
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sta $864
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jsr $800 ; decompress
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+NEW_RESET_VECTOR $3B0
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lda #$2C
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sta $B5D1
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sta $B5D4
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sta $B5D9 ; reset vector fix
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+READ_RAM2_NO_WRITE
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lda MachineStatus
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and #CHEATS_ENABLED
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beq +
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lda #<callback1
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sta $B5F8
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lda #<callback2
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sta $B5B1
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sta $B607
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lda #>callback1
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sta $B5F9
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sta $B5B2
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sta $B608
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+
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jsr DisableAccelerator
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+READ_ROM_NO_WRITE
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jmp $B5B9
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callback1
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lda #$a5
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sta $5FC6 ; patch - don't increase lives
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sta $6E0B ; patch - don't decrease lives
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jmp $6C00
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callback2
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lda #$a5
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sta $8644 ; patch - don't decrease lives
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jmp $800
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!if * > $1C0 {
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!error "code is too large for reset vector hook, ends at ", *
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}
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