.cpu    "65816"
*       =       $1000
        .as
        .xs
        clc
        xce
        sep     #$ff
        clv
        cld
        cli
        clc
        lda     #$80
        lda     #$01
        sed
        sei
        sec
        lda     #$ff
        adc     #$00
        sep     #$ff
        rep     #$80
        rep     #$40
        rep     #$20
        .al
        rep     #$10
        .xl
        rep     #$08
        rep     #$04
        rep     #$02
        rep     #$01
        sep     #$00
        sep     #$ff
        .as
        .xs
        rep     #$00
        rep     #$ff
        .al
        .xl
        lda     #$feed
        sec
        xce
        .as
        .xs
        lda     #$ff
        rep     #$30
        lda     #$ff
        clc
        xce
        lda     #$ff
        rep     #$20
        .al
        sep     #$10
        lda     #$0000
        ldx     #$01
        ldy     #$02
        sep     #$20
        .as
        rep     #$10
        .xl
        lda     #$01
        ldx     #$0000
        ldy     #$0000
        sep     #$30
        .xs
        lda     #$00
        pha
        plp
        rep     #$80
        bpl     L105F

        .byte   $00
        .byte   $00

L105F   sep     #$80
        bpl     _L1065
        bmi     _L1067

_L1065  .byte   $00
        .byte   $00

_L1067  rep     #$40
        bvc     _L106D

        .byte   $00
        .byte   $00

_L106D  sep     #$40
        bvs     _L1073

        .byte   $00
        .byte   $00

_L1073  rep     #$01
        bcc     _L1079

        .byte   $00
        .byte   $00

_L1079  sep     #$01
        bcs     _L107F

        .byte   $00
        .byte   $00

_L107F  rep     #$02
        bne     _L1085

        .byte   $00
        .byte   $00

_L1085  sep     #$02
        beq     _L108B

        .byte   $00
        .byte   $00

_L108B  sep     #$ff
        lda     #$01
        bne     _L1093

        .byte   $00
        .byte   $db

_L1093  lda     #$00
        beq     _L1099

        .byte   $00
        .byte   $db

_L1099  bpl     _L109D

        .byte   $00
        .byte   $db

_L109D  lda     #$80
        bmi     _L10A3

        .byte   $00
        .byte   $db

_L10A3  lda     #$ff
        and     #$00
        beq     _L10AB

        .byte   $00
        .byte   $db

_L10AB  lda     #$00
        ldx     #$80
        and     #$ff
        beq     _L10B5
        bne     _L10B5

_L10B5  lda     #$ff
        ldx     #$00
        and     #$7f
        beq     _L10BF
        bne     _L10BF

_L10BF  bpl     _L10C3

        .byte   $00
        .byte   $db

_L10C3  lda     #$ff
        and     #$80
        bmi     _L10CB
        brk

        .byte   $db

_L10CB  lda     #$00
        ldx     #$80
        bne     _L10D3

        .byte   $00
        .byte   $db

_L10D3  ora     #$00
        beq     _L10D9
        bne     _L10D9

_L10D9  ora     #$01
        bne     _L10DF

        .byte   $00
        .byte   $db

_L10DF  lda     #$00
        ldx     #$80
        bmi     _L10E7

        .byte   $00
        .byte   $db

_L10E7  ora     #$7f
        bpl     _L10EF
        bmi     _L10EF

        .byte   $00
        .byte   $db

_L10EF  ora     #$80
        bmi     _L10F5

        .byte   $00
        .byte   $db

_L10F5  lda     _L10F5
        sec
        ror     a
        bmi     _L10FE

        .byte   $00
        .byte   $dc

_L10FE  clc
        ror     a
        bpl     _L1104

        .byte   $00
        .byte   $dc

_L1104  lda     #$00
        sec
        rol     a
        bne     _L110C

        .byte   $00
        .byte   $dc

_L110C  lda     #$ff
        lsr     a
        bpl     _L1113

        .byte   $00
        .byte   $dd

_L1113  clc
        php
        sec
        plp
        bcc     _L111B

        .byte   $00
        .byte   $00

_L111B  sec
        bcs     _L111F

_L111E  clc
_L111F  lda     $33
        beq     _L111E
        bcs     _L1127
        lda     $44
_L1127  nop
        rep     #$20
        .al
        sep     #$10
        jsr     _L1143
        rep     #$30
        .xl
        jsr     _L1149
        sep     #$30
        .as
        .xs
        jsr     _L1149
        rep     #$20
        .al
        sep     #$10
        jsr     _L1143
        sep     #$30
        .as
        rts

        .al
_L1143  lda     #$1234
        ldx     #$ff
        rts

        .as
_L1149  lda     #$ff
        ldx     #$ee
        ldy     #$dd
        rts