PMS232 datasheet(73/94 Pages) PADAUK

73 / 94 page

PMC232/PMS232 Series

12-bit ADC Enhanced FPPA

8-bit OTP Controller

Page 73 of 94

PDK-DS-PMx232_V104– Dec. 18, 2018

pushaf

Move the ACC and flag register to memory that address specified in the stack pointer.

Example:

pushaf;

Result:

[sp] ← {flag, ACC};

sp ← sp + 2 ;

Affected flags: 『N』Z

『N』C

『N』AC

『N』OV

Application Example:

------------------------------------------------------------------------------------------------------------------------

.romadr 0x10 ;

// ISR entry address

pushaf ;

// put ACC and flag into stack memory

...

// ISR program

...

// ISR program

popaf ;

// restore ACC and flag from stack memory

reti ;

------------------------------------------------------------------------------------------------------------------------

popaf

Restore ACC and flag from the memory which address is specified in the stack pointer.

Example:

popaf;

Result:

← sp - 2 ;

{Flag, ACC} ← [sp] ;

Affected flags: 『Y』Z

『Y』C

『Y』AC

『Y』OV

7-2. Arithmetic Operation Instructions

add

a, I

Add immediate data with ACC, then put result into ACC

Example:

add

a, 0x0f ;

Result:

a ← a + 0fh

Affected flags: 『Y』Z

『Y』C

『Y』AC

『Y』OV

add

a, M

Add data in memory with ACC, then put result into ACC

Example:

add

a, MEM ;

Result:

a ← a + MEM

Affected flags: 『Y』Z

『Y』C

『Y』AC

『Y』OV

add

M, a

Add data in memory with ACC, then put result into memory

Example:

add

MEM, a;

Result:

MEM ← a + MEM

Affected flags: 『Y』Z

『Y』C

『Y』AC

『Y』OV

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