Intel mcs-48 manual 8049/8039

8049/8039

INSTRUCTION SET

	Mnemonic	Description
	ADD A, R	Adrl register to A
	ADD A,@R	Add data memory to A
	ADD A, #data	Add immediate to A
	ADDC A, R	Add register with carry
	ADDC A,@R	Add data memory with carry
	ADDC A, #data Add immediate with carry
	ANL A, R	And register to A
	ANLA,@R	And data memory to A
	ANL A, #data	And immediate to A
	ORLA, R	Or register to A
S ORLA,@R		Or data memory to A
.IJI	ORLA, #data	Or immediate to A
=
E	XRLA, R	Exclusive Or register to A
=
~	XRLA,@R	Exclusive or data memory to A
	XRLA, #data Exclusive or immediate to A
	INCA	Increment A
	DECA	Decrement A
	CLR A	Clear A
	CPL A	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

Bytes Cycle

11

22

11

22

11

22

1

22

1

11

22

1

Mnemonic		Description	Bytes Cycle
..
c	CALL	Jump to subroutine	2	2
~
..f,	RET	Return		2
=	RETR	Retu rn and restore status		2
'"
	CLR C	Clear Carry
:g,	CPL C	Complement Carry
	CLR Fa	Clear Flag a
.l!	CPL Fa	Complement Flag a
u.
	CLR Fl	Clear Flag 1
	CPL Fl	Complement Flag 1
	MOV A, R	Move register to A
	MOVA,@R	Move ~ata memory to A
	MOV A,. #data	Move immediate to A	2	2
	MOV R,A	Move A to register	1
	MOV@R,A	Move A to data memory	1
~	MOV R, #data	Move immediate to register	2	2
	MOV @R, #data Move immediate to data memory		2	2
>

0Move A, PSW Move PSW to A

::;

mMOV PSW, A Move A to PSW

m	XCH A, R	Exchange A and register
C
	XCHA,@R	Exchange A and data memory
	XCHD A,@R	Exchange nibble of A and register
	MOVX A,@R	Move external data memory to A	2
	MOVX@R,A	Move A to external data memory	2

INA, P OUTL P, A ANL P, #cIate

I ORL P, #data

INS A, BUS

~ OUTL BUS, A ANL BUS, #data

.'"5 ORL BUS,#data

MOVD A, P

MOVD P, A

ANLD P, A

ORLO P, A

~

,I INCRINC@R i' DECR 1:1:

Input port to A		2
Output A to port		2
And immediate to port	2	2
Or immediate to port	2	2
I nput BUS to A		2
Output A to BUS	1	2
And immediate to BUS	2	2
Or immediate to BUS	2	2
Input Expander port to A		2
Output A to Expander port		2
And A to Expander port		2
Or A to Expander port		2

Increment registel'

I ncrement data- memory

Decrement reg ister

	MOVPA,@A	Move to A from current page	2
	MOVP3 A,@A	Move to A from Page 3	2
.!!	MOVA, T	Read Timer/Counter
	MOVT, A	Load Timer/Counter
c	STRTT	Start Timer
=

§STRT CNT Start Counter

~STOP TCNT Stop Timer/Counter

,§ EN TCNTI Enable Timer/Counter Interrupt

t-

DIS TCNTI Disable Timer/Counter Interrupt

	EN I	Enable external interrupt
i	DISI	Disable external interrupt
	SEL RBO	Select register bank a
	SEL RB1	Select register bank 1
8 SEL MBa		Select memory ba nk a
	SEL MB1	Select memory bank 1

	JMP addr	Jump unconditional	2	2
	JMPP@A	Jump indirect	1	2
	DJNZ R, addr	Decrement register and skip	2	2
	JC addr	Jump on Carry = 1	2	2
	JNC addr	Jump on Carry = a	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
~	JNTO addr	Jump on TO = a	2	2
d5	JTl addr	Jump on Tl = 1	2	2
	JNT1 addr	Jump on T1 = a	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	2	2
	JNI addr	Jump on INT = a	2	2
	JBb addr	Jump on Accumulator Bit	2	2

ENTO ClK	Enable Clock output on TO
NOP	No Operatior.

Mnemonics copyright Intel Corporation 1976, 1977, 1978

6·38 AFN·00191A·03