SN8P1700
8-bit micro-controller build-in 12-bit ADC
ONE ADDRESS SKIPPING
There are 9 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.
FC
C0STEP
; Skip next instruction, if Carry_flag = 1
; Else jump to C0STEP.
B0BTS1
JMP
.
C0STEP:
NOP
B0MOV
B0BTS0
JMP
A, BUF0
FZ
C1STEP
; Move BUF0 value to ACC.
; Skip next instruction, if Zero flag = 0.
; 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.
A, #12H
C0STEP
; Skip next instruction, if ACC = 12H.
; Else jump to C0STEP.
CMPRS
JMP
.
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:
BUF0
C0STEP
INCS
JMP
…
; Jump to C0STEP if ACC is not zero.
; Jump to C0STEP if BUF0 is not zero.
; Jump to C0STEP if ACC is not zero.
; Jump to C0STEP if BUF0 is not zero.
C0STEP:
NOP
INCMS instruction:
BUF0
C0STEP
INCMS
JMP
…
C0STEP:
NOP
DECS instruction:
BUF0
C0STEP
DECS
JMP
…
C0STEP:
NOP
DECMS instruction:
BUF0
C0STEP
DECMS
JMP
…
C0STEP:
NOP
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Revision 1.94
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