mirror of
https://github.com/a2-4am/4cade.git
synced 2024-10-01 06:56:44 +00:00
54 lines
1.1 KiB
Plaintext
54 lines
1.1 KiB
Plaintext
;license:MIT
|
|
;(c) 2021-2022 by Frank M., qkumba
|
|
|
|
!cpu 6502
|
|
!to "build/PRELAUNCH.INDEXED/TITAN.CRONUS",plain
|
|
*=$106
|
|
|
|
!source "src/macros.a"
|
|
|
|
+ENABLE_ACCEL
|
|
lda #<hook
|
|
sta $1053+1
|
|
lda #>hook
|
|
sta $1053+2
|
|
jmp $1000 ; decompress
|
|
|
|
hook +NEW_RESET_VECTOR $280
|
|
|
|
lda #$8C ; CALL
|
|
sta $C84
|
|
lda #$36 ; "640" / $280
|
|
sta $C84+1
|
|
lda #$34
|
|
sta $C84+2 ; return to TR instead of BASIC
|
|
lda #$30
|
|
sta $C84+3 ; (replaces TEXT:HOME:END)
|
|
|
|
+READ_RAM2_NO_WRITE
|
|
lda MachineStatus
|
|
and #CHEATS_ENABLED
|
|
beq +
|
|
lda #<callback
|
|
sta $1073
|
|
lda #>callback
|
|
sta $1074
|
|
+
|
|
jsr DisableAccelerator
|
|
+READ_ROM_NO_WRITE
|
|
jmp $D566
|
|
|
|
callback
|
|
pla
|
|
pla
|
|
jsr $1080
|
|
jsr $1075
|
|
lda #$AD
|
|
sta $808C ; don't increase lives
|
|
sta $8595 ; don't decrease lives
|
|
rts
|
|
|
|
!if * > $1C0 {
|
|
!error "code is too large, ends at ", *
|
|
}
|