2022-05-23 14:36:54 +00:00
|
|
|
;license:MIT
|
|
|
|
;(c) 2022 by qkumba
|
|
|
|
|
|
|
|
!cpu 6502
|
2022-10-01 00:04:02 +00:00
|
|
|
!to "build/DEMO/GREMLINS#06BE00",plain
|
2022-05-23 14:36:54 +00:00
|
|
|
*=$be00
|
|
|
|
|
|
|
|
!source "src/constants.a" ; no code in these
|
|
|
|
!source "src/macros.a"
|
|
|
|
|
2022-09-27 17:20:04 +00:00
|
|
|
+ENABLE_ACCEL_LC
|
2022-09-10 04:58:15 +00:00
|
|
|
+LOAD_XSINGLE title
|
|
|
|
|
2022-05-23 14:36:54 +00:00
|
|
|
lda #$4C
|
|
|
|
sta $082D
|
|
|
|
sta $0863
|
|
|
|
lda #$2C
|
|
|
|
sta $839 ; no music
|
|
|
|
lda #0
|
|
|
|
sta $856 ; exit keycheck sooner
|
|
|
|
jsr $0800 ; decompress
|
2022-09-10 04:58:15 +00:00
|
|
|
|
2022-05-23 14:36:54 +00:00
|
|
|
+DISABLE_ACCEL
|
2022-09-10 04:58:15 +00:00
|
|
|
|
2022-05-23 14:36:54 +00:00
|
|
|
jsr $830 ; check key
|
2022-05-28 03:09:09 +00:00
|
|
|
bit $C000
|
2022-09-27 17:20:04 +00:00
|
|
|
bmi patch
|
|
|
|
ldx #0
|
2022-05-23 14:36:54 +00:00
|
|
|
stx $5219 ; exit keycheck sooner
|
2022-09-27 17:20:04 +00:00
|
|
|
ldx #3-1
|
|
|
|
- lda patch,x
|
|
|
|
sta $51F2,x
|
|
|
|
sta $5505,x
|
|
|
|
sta $61E4,x
|
|
|
|
dex
|
|
|
|
bpl -
|
2022-05-23 14:36:54 +00:00
|
|
|
jmp $4000
|
|
|
|
|
2022-09-27 17:20:04 +00:00
|
|
|
patch !byte $4C,$00,$01
|
|
|
|
|
2022-09-10 04:58:15 +00:00
|
|
|
title !byte x_e-x_b
|
|
|
|
x_b !text "GREMLINS"
|
|
|
|
x_e
|
2022-05-23 14:36:54 +00:00
|
|
|
|
|
|
|
!if * > $BEFF {
|
|
|
|
!error "code is too large, ends at ", *
|
|
|
|
}
|