mirror of https://github.com/a2-4am/4cade.git
80 lines
1.6 KiB
Plaintext
80 lines
1.6 KiB
Plaintext
;license:MIT
|
|
;(c) 2021 by Frank M.
|
|
|
|
!cpu 6502
|
|
!to "res/DEMO/TUNNEL.TERROR",plain
|
|
*=$BD00
|
|
|
|
!source "src/constants.a" ; no code in these
|
|
!source "src/macros.a"
|
|
|
|
+READ_RAM2_WRITE_RAM2
|
|
jsr EnableAccelerator
|
|
+LOAD_FILE_AT title, $00
|
|
+READ_ROM_NO_WRITE
|
|
|
|
lda #1 ; reset vector fix
|
|
sta $6E13 ; to $3F3
|
|
lda #$A4
|
|
sta $6E15 ; to $3F4 (doesn't change $3F2)
|
|
|
|
lda #$60
|
|
sta $4026
|
|
jsr $4000 ; decompress and show title
|
|
|
|
lda #$4C
|
|
sta $0EFE
|
|
sta $06A4
|
|
sta $AD10
|
|
sta $0E66
|
|
sta $1315+2
|
|
lda #0
|
|
sta $0EFE+1
|
|
sta $06A4+1
|
|
sta $AD10+1
|
|
sta $0E66+1
|
|
sta $1315+3
|
|
sta $0F5D+1
|
|
sta $0F72+1
|
|
lda #1
|
|
sta $03FF ; fix IRQ
|
|
sta $0EFE+2
|
|
sta $06A4+2
|
|
sta $AD10+2
|
|
sta $0E66+2
|
|
sta $1315+4 ; set exits
|
|
|
|
lda #$10
|
|
sta $1315
|
|
lda #$1B
|
|
sta $1315+1
|
|
|
|
lda #$A9
|
|
sta $0F5D
|
|
sta $0F72
|
|
lda #$EA
|
|
sta $0F5D+2
|
|
sta $0F72+2
|
|
|
|
lda #$AD
|
|
sta $8434
|
|
sta $8441
|
|
lda #$30
|
|
sta $8434+1
|
|
sta $8441+1
|
|
lda #$D0
|
|
sta $8434+2
|
|
sta $8441+2 ; disable sound
|
|
|
|
+DISABLE_ACCEL
|
|
|
|
jmp $E00
|
|
|
|
title !byte x_e-x_b
|
|
x_b !text "X/TUNNEL.TERROR/TUNNEL.TERROR"
|
|
x_e
|
|
|
|
!if * > $BFD0 {
|
|
!error "code is too large, ends at ", *
|
|
}
|