Energy Meter IC Family Software Instruction Manual

71M652X Software User’s Guide

Revision 1.7 TERIDIAN Proprietary 110 of 138

Instructions Ordered by Function

Mnemonic Description Code Bytes Cycles

ADD A,Rn Add register to accumulator 28-2F 1 1

ADD A,direct Add direct byte to accumulator 25 2 2

ADD A,@Ri Add indirect RAM to accumulator 26-27 1 2

ADD A,#data Add immediate data to accumulator 24 2 2

ADDC A,Rn Add register to accumulator with carry flag 38-3F 1 1

ADDC A,direct Add direct byte to A with carry flag 35 2 2

ADDC A,@Ri Add indirect RAM to A with carry flag 36-37 1 2

ADDC A,#data Add immediate data to A with carry flag 34 2 2

SUBB A,Rn Subtract register from A with borrow 98-9F 1 1

SUBB A,direct Subtract direct byte from A with borrow 95 2 2

SUBB A,@Ri Subtract indirect RAM from A with borrow 96-97 1 2

SUBB A,#data Subtract immediate data from A with borrow 94 2 2

INC A Increment accumulator 04 1 1

INC Rn Increment register 08-0F 1 2

INC direct Increment direct byte 05 2 3

INC @Ri Increment indirect RAM 06-07 1 3

INC DPTR Increment data pointer A3 1 1

DEC A Decrement accumulator 14 1 1

DEC Rn Decrement register 18-1F 1 2

DEC direct Decrement direct byte 15 2 3

DEC @Ri Decrement indirect RAM 16-17 1 3

MUL AB Multiply A and B A4 1 5

DIV Divide A by B 84 1 5

DA A Decimal adjust accumulator D4 1 1

Table 6-9: Arithmetic Operations