UM10310_1 © NXP B.V. 2008. All rights reserved.
User manual Rev. 01 — 1 December 2008 131 of 139
NXP Semiconductors UM10310
P89LPC9321 User manual
19. Instruction set
Table 123. Instruction set summary
Mnemonic Description Bytes Cycles Hex code
ARITHMETIC
ADD A,Rn Add register to A 1 1 28 to 2F
ADD A,dir Add direct byte to A 2 1 25
ADD A,@Ri Add indirect memory to A 1 1 26 to 27
ADD A,#data Add immediate to A 2 1 24
ADDC A,Rn Add register to A with carry 1 1 38 to 3F
ADDC A,dir Add direct byte to A with carry 2 1 35
ADDC A,@Ri Add indirect memory to A with carry 1 1 36 to 37
ADDC A,#data Add immediate to A with carry 2 1 34
SUBB A,Rn Subtract register from A with borrow 1 1 98 to 9F
SUBB A,dir Subtract direct byte from A with borrow 2 1 95
SUBB A,@Ri Subtract indirect memory from A with
borrow 1 1 96 to 97
SUBB A,#data Subtract immediate from A with borrow 2 1 94
INC A Increment A 1 1 04
INC Rn Increment register 1 1 08 to 0F
INC dir Increment direct byte 2 1 05
INC @Ri Increment indirect memory 1 1 06 to 07
DEC A Decrement A 1 1 14
DEC Rn Decrement register 1 1 18 to 1F
DEC dir Decrement direct byte 2 1 15
DEC @Ri Decrement indirect memory 1 1 16 to 17
INC DPTR Increment data pointer 1 2 A3
MUL AB Multiply A by B 1 4 A4
DIV AB Divide A by B 1 4 84
DA A Decimal Adjust A 1 1 D4
LOGICAL
ANL A,Rn AND register to A 1 1 58 to 5F
ANL A,dir AND direct byte to A 2 1 55
ANL A,@Ri AND indirect memory to A 1 1 56 to 57
ANL A,#data AND immediate to A 2 1 54
ANL dir,A AND A to direct byte 2 1 52
ANL dir,#data AND immediate to direct byte 3 2 53
ORL A,Rn OR register to A 1 1 48 to 4F
ORL A,dir OR direct byte to A 2 1 45
ORL A,@Ri OR indirect memory to A 1 1 46 to 47
ORL A,#data OR immediate to A 2 1 44
ORL dir,A OR A to direct byte 2 1 42
ORL dir,#data OR immediate to direct byte 3 2 43