SN8P1602AX datasheet(33/94 Pages) SONIX

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SN8P1600

8-bit micro-controller

SONiX TECHNOLOGY CO., LTD

Page 33

Revision 1.94

ONE ADDRESS SKIPPING

There are nine instructions (CMPRS, INCS, INCMS, DECS, DECMS, BTS0, BTS1, B0BTS0, B0BTS1) with one

address skipping function. If the result of these instructions is matched, the PC will add 2 steps to skip next instruction.

If the condition of bit test instruction is matched, the PC will add 2 steps to skip next instruction.

B0BTS1

; To skip, if Carry_flag = 1

JMP

C0STEP

; Else jump to C0STEP.

C0STEP:

NOP

B0MOV

A, BUF0

; Move BUF0 value to ACC.

B0BTS0

; To skip, if Zero flag = 0.

JMP

C1STEP

; Else jump to C1STEP.

C1STEP:

NOP

If the ACC is equal to the immediate data or memory, the PC will add 2 steps to skip next instruction.

CMPRS

A, #12H

; To skip, if ACC = 12H.

JMP

C0STEP

; Else jump to C0STEP.

C0STEP:

NOP

If the result after increasing or decreasing by 1 is 0xFF or 0x00, the PC will add 2 steps to skip next

instruction.

INCS instruction:

INCS

BUF0

JMP

C0STEP

; Jump to C0STEP if ACC is not zero.

…

C0STEP:

NOP

INCMS instruction:

INCMS

BUF0

JMP

C0STEP

; Jump to C0STEP if BUF0 is not zero.

…

C0STEP:

NOP

DECS instruction:

DECS

BUF0

JMP

C0STEP

; Jump to C0STEP if ACC is not zero.

…

C0STEP:

NOP

DECMS instruction:

DECMS

BUF0

JMP

C0STEP

; Jump to C0STEP if BUF0 is not zero.

…

C0STEP:

NOP

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