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