4cade/src/prelaunch/rescue.raiders.a
2020-02-28 15:33:10 -08:00

44 lines
933 B
Plaintext
Executable File

;license:MIT
;(c) 2019 by qkumba/Frank M.
!cpu 6502
!to "build/PRELAUNCH/RESCUE.RAIDERS",plain
*=$106
!source "src/prelaunch/common.a"
+ENABLE_ACCEL
lda #$60
sta $A37
jsr $800 ; find and load "DOS"
ldx #$60
stx $BFE5
jsr $BFC8
lda #$4C
sta $4047
+GET_MOCKINGBOARD_SPEECH
bcs +
lda #$60
sta $40FB ; no speech chip, pretend no MB
+
+DISABLE_ACCEL ; otherwise Mockingboard detection fails
lda #0
jsr $4000
lda #<reset
sta $3F2
sta $FFFC
lda #>reset
sta $FFFD
lda #$4C
sta $BFE5
+READ_RAM1_WRITE_RAM1 ; fix crash on //c+
jmp $404A
reset
+READ_ROM_NO_WRITE
jmp $FAA6
!if * > $1C0 {
!error "code is too large, ends at ", *
}