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140 lines
2.4 KiB
ArmAsm
140 lines
2.4 KiB
ArmAsm
.cpu "65816"
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zero = $00
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longsym = $123456
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* = $1000
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.as
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.xs
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clc
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xce
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sep #$30
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jml L440000
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lodat .byte $00
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.byte $01
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.byte $02
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.logical $440000
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L440000 cmp L440000
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L440004 lda L440000
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lda @wL440000 & $ffff
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lda zero
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bmi L440004
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per high44
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bne high44
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brl L44FFC0
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dat44 .word dat44 & $ffff
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.long dat44
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.here
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.logical $44ffc0
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L44FFC0 cmp L44FFC0
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high44 beq _L44FFCB
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bmi L440004
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brl L440004
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_L44FFCB jml _L2000
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.here
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.logical $2000
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_L2000 bit _L2000
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pea dat44 & $ffff
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pea dat44 >> 16
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bne skip
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jml [lodat]
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skip nop
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jsr j2
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j2 jsr j2+3
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jsr j2-3
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jsl longsym
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jml bank54
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.here
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.logical $543210
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bank54 cmp bank54
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bra L54321C
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backchk nop
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nop
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rts
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backval .long backchk
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L54321C lda backchk
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lda fwdchk
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lda $543216
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lda $54327d
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lda 0+(backchk & $ffff)+1
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lda 0+(backchk & $ffff)-1
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lda 0+(fwdchk & $ffff)+1
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lda 0+(fwdval & $ffff)+2
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nop
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jsr backchk
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jsr backchk+1
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jsr $543218
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jsr fwdchk
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jsr fwdchk+1
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jsr $54327f
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nop
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ldx #$00
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jsr (backval,x)
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jsr (fwdval,x)
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jsr _L54326E
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jsr _L543271
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jsr _L543268
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jsr _L54326B
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jsr _L543274
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jsr _L543277
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bra L543280
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_L543268 jmp (backval,x)
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_L54326B jmp (fwdval,x)
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_L54326E jmp (lodat)
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_L543271 jmp (lodat)
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_L543274 jml [lodat]
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_L543277 jml [lodat]
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fwdval .long fwdchk
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fwdchk nop
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nop
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rts
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L543280 jsr skip+$540000
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nop
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rep #$30
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.al
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.xl
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php
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lda #$0000
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sep #$30
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.as
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.xs
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lda #$00
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plp
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lda #$ea
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nop
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sep #$30
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php
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lda #$00
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rep #$30
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.al
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.xl
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lda #$0000
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plp
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lda #$eaea
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rep #$30
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nop
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jsr $54edcb
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nop
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rtl
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.here
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