CDP1802ACE datasheet(22/28 Pages) INTERSIL

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3-24

EXCLUSIVE OR

XOR

M(R(X)) XOR D

→ D

EXCLUSIVE OR IMMEDIATE

XRI

M(R(P)) XOR D

→ D; R(P) + 1 → R(P)

AND

M(R(X)) AND D

→ D

AND IMMEDIATE

ANl

M(R(P)) AND D

→ D; R(P) + 1 → R(P)

SHIFT RIGHT

SHR

SHIFT D RIGHT, LSB(D)

→ DF, 0 → MSB(D)

SHIFT RIGHT WITH CARRY

SHRC

(Note 2)

SHIFT D RIGHT, LSB(D)

→ DF, DF → MSB(D)

RING SHIFT RIGHT

RSHR

(Note 2)

SHIFT D RIGHT, LSB(D)

→ DF, DF → MSB(D)

SHIFT LEFT

SHL

SHIFT D LEFT, MSB(D)

→ DF, 0 → LSB(D)

SHIFT LEFT WITH CARRY

SHLC

(Note 2)

SHIFT D LEFT, MSB(D)

→ DF, DF → LSB(D)

RING SHIFT LEFT

RSHL

(Note 2)

SHIFT D LEFT, MSB(D)

→ DF, DF → LSB(D)

ARITHMETIC OPERATIONS (Note 1)

ADD

M(R(X)) + D

→ DF, D

ADD IMMEDIATE

ADl

M(R(P)) + D

→ DF, D; R(P) + 1 → R(P)

ADD WITH CARRY

ADC

M(R(X)) + D + DF

→ DF, D

ADD WITH CARRY, IMMEDIATE

ADCl

M(R(P)) + D + DF

→ DF, D; R(P) + 1 → R(P)

SUBTRACT D

M(R(X)) - D

→ DF, D

SUBTRACT D IMMEDIATE

SDl

M(R(P)) - D

→ DF, D; R(P) + 1 → R(P)

SUBTRACT D WITH BORROW

SDB

M(R(X)) - D - (NOT DF)

→ DF, D

SUBTRACT D WITH BORROW, IMMEDIATE

SDBl

M(R(P)) - D - (Not DF)

→ DF, D; R(P) + 1 → R(P)

SUBTRACT MEMORY

D-M(R(X))

→ DF, D

SUBTRACT MEMORY IMMEDIATE

SMl

D-M(R(P))

→ DF, D; R(P) + 1 → R(P)

SUBTRACT MEMORY WITH BORROW

SMB

D-M(R(X))-(NOT DF)

→ DF, D

SUBTRACT MEMORY WITH BORROW, IMMEDI-

ATE

SMBl

D-M(R(P))-(NOT DF)

→ DF, D; R(P) + 1 → R(P)

BRANCH INSTRUCTIONS - SHORT BRANCH

SHORT BRANCH

M(R(P))

→ R(P).0

NO SHORT BRANCH (See SKP)

NBR

(Note 2)

R(P) + 1

→ R(P)

SHORT BRANCH IF D = 0

IF D = 0, M(R(P))

→ R(P).0, ELSE R(P) + 1 → R(P)

SHORT BRANCH IF D NOT 0

BNZ

IF D NOT 0, M(R(P))

→ R(P).0, ELSE R(P) + 1 → R(P)

SHORT BRANCH IF DF = 1

BDF

(Note 2)

IF DF = 1, M(R(P))

→ R(P).0, ELSE R(P) + 1 → R(P)

SHORT BRANCH IF POS OR ZERO

BPZ

SHORT BRANCH IF EQUAL OR GREATER

BGE

SHORT BRANCH IF DF = 0

BNF

(Note 2)

IF DF = 0, M(R(P))

→ R(P).0, ELSE R(P) + 1 → R(P)

SHORT BRANCH IF MINUS

SHORT BRANCH IF LESS

SHORT BRANCH IF Q = 1

IF Q = 1, M(R(P))

→ R(P).0, ELSE R(P) + 1 → R(P)

SHORT BRANCH IF Q = 0

BNQ

IF Q = 0, M(R(P))

→ R(P).0, ELSE R(P) + 1 → R(P)

TABLE 1. INSTRUCTION SUMMARY (SEE NOTES) (Continued)

INSTRUCTION

MNEMONIC

CODE

OPERATION

CDP1802A, CDP1802AC, CDP1802BC

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