Intel mcs-48 manual Instruction SET Summary

8048/8049

INSTRUCTION SET SUMMARY

	Mnemonic	Description	Bytes	Cycle
	ADD A, R	Add reg ister to A
	ADD A,@R	Add data memory to A	1
	ADD A, #data	Add immediate to A	2
	ADDC A, R	Add register with carry
	ADDC A,@R	Add data memory with carry	1
	ADDC A, #data	Add immediate with carry	2	2
	ANL A, R	And register to A		1
	ANL A, @R	And data memory to A	1
	ANL A, "data	And immediate to A	2	2
g	O<1LA, R	Or register to A
	ORL A, @R	Or data memory to A	1
.!!	ORL A, #data	Or immediate to A	2	2
~
E	XRLA, R	Exclusive Or register to A		1
~
u	XRL A, @R	Exclusive or data memory to A		1
u
«	XRLA, #data	Exclusive or immediate to A	2	2
	INCA	Increment A	1
	DECA	Decrement A
	CLR A	Clear A
	CPLA	Complement A
	DAA	Decimal Adjust A
	SWAP A	Swap nibbles of A
	RLA	Rotate A left
	RLCA	Rotate A left through carry
	RR A	Rotate A right
	RRCA	Rotate A right through carry
	IN A, P	Input port to A		2
	OUTL P, A	Output A to port		2
;;Q.	ANL P, #data	And immediate to port	2	2
	ORL P, #data	Or immediate to port	2	2
;;	INS A, BUS	I nput BUS to A		2
~Q.	OUTL BUS, A	Output A to BUS	1	2
	ANL BUS, #data	And immediate to BUS	2	2
.:	OR L BUS, #data	Or immediate to BUS	2	2
	MOVD A, P	Input Expander port to A		2
	MOVD P, A	Output A to Expander port		2
	ANLD P, A	And A to Expander port		2
	ORLD P, A	Or A to Expander port		2
~	INCR	Increment register
Ii
1;;	INC@R	Increment data memory
'~
a:	DEC R	Decrement register
	JMP addr	Jump unconditional	2	2
	JMPP@A	Jump indi~ect		2
	DJNZ R, addr	Decrement register and jump	2	2
	JC addr	Jump 0" Carry = 1	2	2
	JNC addr	Jump on Carry = 0	2	2
	J Z addr	Jump on A Zero	2	2
	JNZ addr	Jump on A not Zero	2	2
~	JTO addr	Jump on TO ~ 1	2	2
u
c		Jump on TO ~ 0	2	2
= JNTO addr
ell	JT1 addr	Jump on T1 ~ 1	2	2
	JNT1 addr	Jump on Tl ~ 0	2	2
	JFO addr	Jump on FO ~ 1	2	2
	JF 1 addr	Jump on Fl ~ 1	2	2
	JTF addr	Jump on timer flag =1	2	2
	JNI addr	Jump on INT ~ 0	2	2
	JBb addr	Jump on Accumulator Bit	2	2

Mnemonic

~

'§c CALL addr e RET

..c RETR

~

V>

CLR C

CPLC

~

'"CLR FO

.!!

u. CPL FO CLR F1 CPL F1

MOV A, R

MOV A,@R

MOV A, #data

MOV R, A

MOV@R,A

MOV R, #data

i;'! MOV@R,#data

>

0MOV A, PSW

:;:

~MOV PSW, A C XCH A, R

XCHA,@R XCHD A,@R MOVX A,@R MOVX@R,A MOVPA,@A MOVP3 A,@A

MOV A, T

~MOV T, A

~STRTT

0

~ STRT CNT Ii STOP TCNT i=E EN TCNTI

DISTCNTI

EN I

DIS I e SEL RBO

1:SEL RBl

0

uSEL MBO SEL MBl

ENTO CLK

NOP

DescriptionBytes

Jump to subroutine	2
Return

Return and restore status

Clear Carry

Complement Carry

Clear Flag 0

Complement Flag 0

Clear Flag 1

Complement Flag 1

Move register to A
Move data memory to A
Move immediate to A	2
Move A to register
Move A to data memory
Move immediate to register	2
Move immed late to data memory	2

Move PSW to A

Move A to PSW

Exchange A and register Exchange A and data memory Exchange nibble of A and register Move external data memory to A Move A to external data memory Move to A from cu rrent page Move to A from Page 3

Read Timer/Counter

Load Timer/Counter

Start Timer

Start Counter

Stop Timer/Counter

Enable Timer/Counter Interrupt

Disable Timer/Counter Interrupt

Enable external interrupt

Disable external interrupt

Select register bank 0

Select register bank 1

Select memory bank 0

Select memory bank 1

Enable Clock output on TO

No Operation

Cycles

2

2

2

1

2

2

2

2

2

2

2

Mnemonics copyright Intel Corporation 1976,

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