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https://github.com/fadden/6502bench.git
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98914e9f80
The 65816 definition makes it a two-byte instruction, like COP. On the 6502 it acted like a two-byte instruction, but in practice very few assemblers treat it that way. Very few humans, for that matter. So it's now treated as a single byte instruction, with the following byte encoded as a data value.
75 lines
1.2 KiB
ArmAsm
75 lines
1.2 KiB
ArmAsm
org $1000
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clc
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xce
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sep #$30
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jsr L1014
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jsr L101C
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jsr L102A
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jsr L102F
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jsr L1059
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rts
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L1014 lda #$00
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dfb $2c
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L1017 lda #$01
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beq L1017
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rts
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L101C sep #$30
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lda $00
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beq L1025
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lda #$00
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brk
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L1025 stal $012345
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rts
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L102A dfb $20
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L102B rts
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dfb $ea
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bra L102B
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L102F dfb $2c
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L1030 dfb $2c
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L1031 dfb $2c
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L1032 dfb $2c
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L1033 dfb $2c
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L1034 dfb $2c
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L1035 dfb $2c
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L1036 dfb $2c
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L1037 dfb $2c
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L1038 nop
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nop
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asl A
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bcc L102F
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asl A
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bcc L1030
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asl A
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bcc L1031
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asl A
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bcc L1032
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asl A
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bcc L1033
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asl A
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bcc L1034
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asl A
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bcc L1035
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asl A
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bcc L1036
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asl A
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bcc L1037
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asl A
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bcc L1038
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rts
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L1059 dfb $2c
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L105A nop
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dfb $ad
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L105C lda $00
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asl A
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bcc L105A
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asl A
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bcc L105C
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dfb $af
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