Intel mcs-48 manual 111, Instruction

	INSTRUCTION
	INA,P
	QUTL P,A
	ANLP.=OATA
	QRL P, ::DATA
	INS A. BUS
	OUTLBUS.A
	ANL BUS, :rDATA
	ORL BUS, 4JATA
'l'-	MOVX@lR.A
	MOVXA,OR
	MOVDA,Pi
	MOVDPj,A
	ANLDP,A
	ORLD P,A
	J ICONDITIONAL)
	STRT T
	STRT CNT
	STOP TCNT
	EN.
	DIS I
	ENTOCLK

S1		52
FETCH		INCREMENT
INSTRUCTION	·PROGRAM COUNTER
FETCH		INCREMENT
INSTRUCTION	PROGRAM COUNTER
FETCH		INCREMENT
INSTRUCTION	PROGRAM COUNTER
FETCH		INCREMENT
INSTRUCTION	PROGRAM COUNTER
FETCH		INCREMENT
INSTRUCTION	PROGRAM COUNTER
FETCH		INCREMENT
INSTRUCTION	PROGRAM COUNTER
FETCH	·	INCREMENT
INSTRUCTION	PROGRAM COUNTER
FETCH	·	INCREMENT
INSTRUCTION	PROGRAM COUNTER
FETCH		INCREMENT
INSTRUCTION	PROGRAM COUNTER
FETCH		INCREMENT
INSTRUCTION	PROGRAM COUNTER
FETCH		INCREMENT
INSTRUCTION	PROGRAM COUNTER
FETCH		INCREMENT
INSTRUCTION	PROGRAM COUNTER
FETCH		INCREMENT
INSTRUCTION	PROGRAM COUNTER
FETCH		INCREMENT
INSTRUCTION	PROGRAM COUNTER
FETCH		INCREMENT
INSTRUCTION	PROGRAM COUNTER
FETCH		INCREMENT
INSTRUCTION	PROGRAM COUNTER
FETCH		INCREMENT
INSTRUCTION	PROGRAM COUNTER
	·
FETCH		INCREMENT
INSTRUCTION	PROGRAM COUNTER
	·
FETCH		INCREMENT
INSTRUCTION	PROGRAM COUNTER
FETCH		INCREMENT
INSTRUCTION	PROGRAM COUNTER
	·
-		-----------

CYCLE 1

S3

--

--

--

--

--

--

--

--

OUl'PUTRAM

ADDRESS

OUTPUT RAM

ADDRESS

OUTPUT

OPCODE/ADDRESS

OUTPUT

OPCODE/ADDRESS

OUTPUT

QPCODE/ADDRESS

OUTPUT

OPCODE/ADDRESS

SAMPLE

CONDITION

--

--

--

--

--

54	S5
INCREMENT	--
TIMER
INCREMENT	OUTPUT
TIMER	TO PORT
INCREMENT	READ PORT
TIMER
INCREMENT	READ PORT
TIMER
INCREMENT	--
TIMER
INCREMENT	OUTPUT
TIMER	TOPQRT
INCREMENT	READ PORT
TIMER
INCREMENT	READ PORT
TIMER
INCREMENT	OUTPUT
TIMER	DATA TO RAM
INCREMENT	--
TIMER
INCREMENT	--
TIMER
INCREMENT	OUTPUT DATA
TIMER	TOP2LOWER
INCREMENT	OUTPUT
TIMER	DATA
INCREMENT	OUTPUT
TIMER	DATA
INCREMENT	--
TIMER

--START COUNTER

--STOP COUNTER

ENABLE--

INTERRUPT

DISABLE--

INTERRUPT

ENABLE--

CLOCK

CYCLE 2

S1	S2	·	53	54	55
--	READ PORT		--	--	--
--	--	·	--	--	--
FETCH	--		INCREMENT	OUTPUT	--
IMMEDIATE DATA		·PROGRAM COUNTER		TO PORT
FETCH	--	· INCREMENT		OIffi'UT	--
IMMEDIATE DATA		PROGRAM COUNTER		TO PORT
--	READ PORT	·	--	--	--
--	--	·	--	--	--
FETCH	--		IHCREMENT	OUTPUT	--
IMMEDIATE DATA		·PROGRAM COUNTER		TO PORT
FETCH	--		INCREMENT	OllTl'UT	--
IMMEDIATE DATA		·PROGRAM COUNTER		TO PORT
--	--	·	--	--	--
--	READ DATA	·	--	--	--
--	P2 LOWER	·	--	--	--
	READ
--	--	·	--	--	--
--	--	·	--	--	--
--	--	·	--	--	--
FETCH	--		UPDATE	--	--
IMMEDIATE DATA		·PROGRAM COUNTER

·VALID INSTRUCTION ADDRESSES ARE OUTPUT AT THIS TIME IF EXTERNAL PROGRAM MEMORY IS BEING ACCESSED.

!!

z

Ci)

r- m

n o

3:

'111

o

Z m

Z -t

en -<en -tm

3:

INSTRUCTION TIMING DIAGRAM