PFS122
8bit MTP MCU with 12-bit R-Type ADC
7.6. Conditional Operation Instructions
ceqsn a, I
Compare ACC with immediate data and skip next instruction if both are equal.
Flag will be changed like as (a ← a – I)
Example: ceqsn
a, 0x55 ;
MEM ;
error ;
inc
goto
Result: If a=0x55, then “goto error”; otherwise, “inc MEM”.
Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV
Compare ACC with memory and skip next instruction if both are equal.
Flag will be changed like as (a ← a - M)
ceqsn a, M
Example: ceqsn
a, MEM;
Result: If a=MEM, skip next instruction
Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV
cneqsn a, M
Compare ACC with memory and skip next instruction if both are not equal.
Flag will be changed like as (a ← a - M)
Example: cneqsn
a, MEM;
Result: If a≠MEM, skip next instruction
Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV
cneqsn a, I
Compare ACC with immediate data and skip next instruction if both are no equal.
Flag will be changed like as (a ← a - I)
Example: cneqsn
a,0x55 ;
MEM ;
error ;
inc
goto
Result: If a≠0x55, then “goto error”; Otherwise, “inc MEM”.
Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV
Check IO bit and skip next instruction if it’s low
t0sn IO.n
t1sn IO.n
t0sn M.n
t1sn M.n
Example: t0sn
pa.5;
Result: If bit 5 of port A is low, skip next instruction
Affected flags: 『N』Z 『N』C 『N』AC 『N』OV
Check IO bit and skip next instruction if it’s high
Example: t1sn
pa.5 ;
Result: If bit 5 of port A is high, skip next instruction
Affected flags: 『N』Z 『N』C 『N』AC 『N』OV
Check memory bit and skip next instruction if it’s low
Example: t0sn MEM.5 ;
Result: If bit 5 of MEM is low, then skip next instruction
Affected flags: 『N』Z 『N』C 『N』AC 『N』OV
Check memory bit and skip next instruction if it’s high
EX: t1sn MEM.5 ;
Result: If bit 5 of MEM is high, then skip next instruction
Affected flags: 『N』Z 『N』C 『N』AC 『N』OV
Increment ACC and skip next instruction if ACC is zero
izsn
a
Example: izsn
Result:
a;
a
←
a + 1,skip next instruction if a = 0
Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV
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PDK-DS-PFS122-EN_V000-May 28, 2020
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