mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-11-18 21:06:31 +00:00
59 lines
1019 B
ArmAsm
59 lines
1019 B
ArmAsm
|
|
.byte 1 ; number of sectors for ROM to load
|
|
|
|
wboot_entry:
|
|
ldx $2B ; load slot into X
|
|
; possibly unnecessary, already there?
|
|
|
|
lda $C088,X ; turn off drive motor
|
|
|
|
; put $CX00 in $10:$11, where X is slot
|
|
; allows rebooting later
|
|
|
|
txa
|
|
lsr
|
|
lsr
|
|
lsr
|
|
lsr
|
|
ora #$c0
|
|
sta $11
|
|
|
|
lda #$00
|
|
sta $10
|
|
|
|
; make sure we are in 40col mode
|
|
; with monitor I/O working
|
|
|
|
jsr $FE89 ; SETKBD (simulate keypress?)
|
|
jsr $FE93 ; SETVID (simulate video output?)
|
|
jsr $FB2F ; INIT (clear screen/etc)
|
|
jsr $FE84 ; SETNORM (set normal video)
|
|
jsr $FC58 ; HOME (clear screen)
|
|
|
|
; print our message
|
|
|
|
ldx #$00 ; loop either 256 chars or until hit zero
|
|
loop:
|
|
lda message,X
|
|
beq done
|
|
ora #$80
|
|
jsr $FDED ; COUT
|
|
inx
|
|
bne loop
|
|
done:
|
|
|
|
; wait for keypress
|
|
|
|
jsr $fd0c ; RDKEY
|
|
|
|
; resboot from current disk (set earlier)
|
|
jmp ($0010)
|
|
|
|
message:
|
|
.byte $0D,$0D,$0D,$0D,$0D
|
|
.byte " APPLE II MYST - DISK 2",$0D,$0D,$0D
|
|
.byte " PLEASE INSERT DISK 1",$0D,$0D
|
|
.byte " PRESS ANY KEY TO REBOOT",$0D
|
|
.byte $00
|
|
|