PFS172 datasheet(82/92 Pages) PADAUK

82 / 92 page

PFS172

8bit MTP MCU with 8-bit ADC

Page 82 of 92

PDK-DS-PFS172-EN_V000-May 8, 2020

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 ;

inc

MEM ;

goto

error ;

Result: If a=0x55, then “goto error”; otherwise, “inc MEM”.

Affected flags: 『Y』Z

『Y』C

『Y』AC

『Y』OV

ceqsn

a, M

Compare ACC with memory and skip next instruction if both are equal.

Flag will be changed like as (a ← 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 ;

inc

MEM ;

goto

error ;

Result: If a≠0x55, then “goto error”; Otherwise, “inc MEM”.

Affected flags: 『Y』Z

『Y』C

『Y』AC

『Y』OV

t0sn

IO.n

Check IO bit and skip next instruction if it’s low

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

t1sn

IO.n

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

t0sn

M.n

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

t1sn

M.n

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

izsn

Increment ACC and skip next instruction if ACC is zero

Example:

izsn

Result:

a ← a + 1,skip next instruction if a = 0

Affected flags: 『Y』Z

『Y』C

『Y』AC

『Y』OV

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