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68 lines
1.3 KiB
Plaintext
68 lines
1.3 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/DEMO/BATTLEZONE#060300",plain
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*=$300
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!source "src/constants.a" ; no code in these
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!source "src/macros.a"
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;+ENABLE_ACCEL ; can't
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+LOAD_XSINGLE title
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lda #$60
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sta $201e
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jsr $2000 ; decompress
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ldx #0
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stx $0811
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inx
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stx $0816 ; reset vector patch
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ldx #3-1
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- lda #$EA
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sta $1632,x ; disable clearing keyboard strobe
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lda patch,x
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sta $0872,x
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sta $161A,x
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sta $7661,x
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sta $766C,x
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sta $7693,x
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sta $0B6A,x
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sta $73A7,x
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sta $168F+4,x
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dex
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bpl -
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ldx #4-1
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- lda patch2,x
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sta $168F,x ; set exits
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dex
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bpl -
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lda #$D0
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sta $7733
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sta $774D
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sta $78B8
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sta $78BB
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sta $7815
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sta $5180
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sta $5576
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sta $0B8E ; disable sound
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;+DISABLE_ACCEL
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jmp $810
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patch !byte $4C,$00,$01
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patch2 !byte $C9,$FF,$F0,$16
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title !byte x_e-x_b
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x_b !text "BATTLEZONE"
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x_e
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!if * > $3F0 {
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!error "code is too large, ends at ", *
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}
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