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90 lines
1.8 KiB
Plaintext
90 lines
1.8 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/THUNDER.BOMBS",plain
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*=$B000
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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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;+LOAD_FILE_KEEP_DIR
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ldx #0 ; read to main memory
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stx ldrhi
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stx ldrlo
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+LDADDR title
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jsr iLoadFileDirect
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+READ_ROM_NO_WRITE
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ldx #16-1 ; we also need to copy the length byte
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- lda newpath,x
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sta $BFD0,x
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dex
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bpl -
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lda #$60
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sta $887F
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lda #$4C
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sta $8819
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lda #<callback
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sta $8819+1
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lda #>callback
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sta $8819+2
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jsr $87F9 ; load/title
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lda #$60
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sta $7818
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jsr $7800 ; unpack/setup
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lda #0
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sta $3F2 ; reset vector
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lda #$4C
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sta $789B
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sta $78CB
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sta $7A8C
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sta $7837
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lda #0
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sta $789B+1
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sta $78CB+1
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sta $7A8C+1
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sta $7837+1
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lda #1
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sta $789B+2
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sta $78CB+2
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sta $7A8C+2
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sta $7837+2 ; set exits
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lda $323
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jmp $781B
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callback bit $C000
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ldx #$30
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- bit $C055
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lda #$0B
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jsr $FCA8
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bit $C054
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lda #$0B
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jsr $FCA8
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bit $C000
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bmi exit
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dey
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bne -
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dex
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bne -
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jmp $8839
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exit jmp $100
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newpath
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!byte 15
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!text "X/THUNDER.BOMBS"
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title !byte x_e-x_b
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x_b !text "X/THUNDER.BOMBS/THUNDER.BOMBS"
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x_e
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!if * > $B100 {
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!error "code is too large, ends at ", *
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}
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