mirror of
https://github.com/mgcaret/rom4x.git
synced 2024-12-22 03:29:18 +00:00
45 lines
1.3 KiB
ArmAsm
45 lines
1.3 KiB
ArmAsm
.code
|
|
.psc02
|
|
.include "iic+.defs"
|
|
.org reset5x ; max 157 bytes
|
|
stz power2 + rx_mslot ; action = normal reset
|
|
lda #>(rst5xrtn-1) ; common case
|
|
pha
|
|
lda #<(rst5xrtn-1)
|
|
pha ; note that this stays on stack
|
|
asl butn1 ; option (closed apple)
|
|
bcs ckdiag
|
|
exitrst: jmp swrts2
|
|
; check to see if cmd_option (both apples) are down
|
|
ckdiag: bit butn0 ; command (open apple)
|
|
bmi exitrst ; return to RESET.X
|
|
; present menu because only closed apple is down
|
|
menu: jsr menu5x ; display menu
|
|
jsr gkey5x
|
|
cmp #$b0 ; "0"
|
|
bne ckkey1
|
|
ldx #$ff ; reset stack
|
|
txs
|
|
txa
|
|
jmp $fb3c ; now has crash-to-monitor function
|
|
ckkey1: cmp #$b2 ; "2"
|
|
beq doconf
|
|
cmp #$b4 ; "4"
|
|
bne ckkey2
|
|
doconf: jsr conf5x
|
|
bne menu ; go back to menu4x
|
|
ckkey2: cmp #$b7 ; "7"
|
|
bne ckkey3
|
|
jsr $fd02 ; accelerator menu
|
|
bra menu
|
|
ckkey3: sec
|
|
sbc #$b0 ; ascii->number
|
|
bmi menu ; < 0 not valid
|
|
cmp #$07 ; we will use 7 for accelerator later
|
|
bpl menu ; > 7 not valid
|
|
sta power2 + rx_mslot ; for boot5x
|
|
stz softev + 1 ; deinit coldstart
|
|
stz pwerdup ; ditto
|
|
bra exitrst
|
|
|