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* Add files via upload * Delete BATTLEZONE.1 * Delete BUZZARD.BAIT.1 * Delete CRIME.WAVE.1 * Delete GAMMA.GOBLINS.1 * Delete NIGHTMARE.1 * Delete ROBOTRON.1 * Delete SPACE.EGGS.1 * Add files via upload
87 lines
1.7 KiB
Plaintext
87 lines
1.7 KiB
Plaintext
;license:MIT
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;(c) 2021 by Frank M.
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!cpu 6502
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!to "res/DEMO/BATTLEZONE",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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+READ_RAM2_WRITE_RAM2
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jsr EnableAccelerator
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+LOAD_FILE_AT title, $00
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+READ_ROM_NO_WRITE
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lda #$60
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sta $201e
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jsr $2000 ; decompress
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lda #0
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sta $0811
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lda #1
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sta $0816 ; reset vector patch
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lda #$EA
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sta $1632
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sta $1632+1
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sta $1632+2 ; disable clearing keyboard strobe
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lda #$4C
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sta $0872
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sta $161A
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sta $7661
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sta $766C
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sta $7693
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sta $0B6A
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sta $73A7
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sta $168F+4
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lda #0
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sta $0872+1
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sta $161A+1
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sta $7661+1
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sta $766C+1
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sta $7693+1
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sta $0B6A+1
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sta $73A7+1
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sta $168F+5
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lda #1
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sta $0872+2
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sta $161A+2
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sta $7661+2
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sta $766C+2
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sta $7693+2
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sta $0B6A+2
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sta $73A7+2
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sta $168F+6
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lda #$C9
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sta $168F
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lda #$FF
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sta $168F+1
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lda #$F0
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sta $168F+2
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lda #$16
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sta $168F+3 ; set exits
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lda #$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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title !byte x_e-x_b
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x_b !text "X/BATTLEZONE/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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