CDP1802BCEX datasheet(22/27 Pages) INTERSIL

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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)

SHORT BRANCH IF EF1 = 1 (EF1 = VSS)

IF EF1 =1, M(R(P))

→ R(P).0, ELSE R(P) + 1 → R(P)

SHORT BRANCH IF EF1 = 0 (EF1 = VCC)

BN1

IF EF1 = 0, M(R(P))

→ R(P).0, ELSE R(P) + 1 → R(P)

SHORT BRANCH IF EF2 = 1 (EF2 = VSS)

IF EF2 = 1, M(R(P))

→ R(P).0, ELSE R(P) + 1 → R(P)

SHORT BRANCH IF EF2 = 0 (EF2 = VCC)

BN2

IF EF2 = 0, M(R(P))

→ R(P).0, ELSE R(P) + 1 → R(P)

SHORT BRANCH IF EF3 = 1 (EF3 = VSS)

IF EF3 = 1, M(R(P))

→ R(P).0, ELSE R(P) + 1 → R(P)

SHORT BRANCH IF EF3 = 0 (EF3 = VCC)

BN3

IF EF3 = 0, M(R(P))

→ R(P).0, ELSE R(P) + 1 → R(P)

SHORT BRANCH IF EF4 = 1 (EF4 = VSS)

IF EF4 = 1, M(R(P))

→ R(P).0, ELSE R(P) + 1 → R(P)

SHORT BRANCH IF EF4 = 0 (EF4 = VCC)

BN4

IF EF4 = 0, M(R(P))

→ R(P).0, ELSE R(P) + 1 → R(P)

BRANCH INSTRUCTIONS - LONG BRANCH

LONG BRANCH

LBR

M(R(P))

→ R(P). 1, M(R(P) + 1) → R(P).0

NO LONG BRANCH (See LSKP)

NLBR

(Note 2)

R(P) = 2

→ R(P)

LONG BRANCH IF D = 0

LBZ

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

→ R(P).1, M(R(P) +1) → R(P).0,

ELSE R(P) + 2

→ R(P)

LONG BRANCH IF D NOT 0

LBNZ

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

→ R(P).1, M(R(P) + 1) → R(P).0, ELSE

R(P) + 2

→ R(P)

LONG BRANCH IF DF = 1

LBDF

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

→ R(P).1, M(R(P) + 1) → R(P).0, ELSE

R(P) + 2

→ R(P)

LONG BRANCH IF DF = 0

LBNF

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

→ R(P).1, M(R(P) + 1) → R(P).0, ELSE

R(P) + 2

→ R(P)

LONG BRANCH IF Q = 1

LBQ

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

→ R(P).1, M(R(P) + 1) → R(P).0,

ELSE R(P) + 2

→ R(P)

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

INSTRUCTION

MNEMONIC

CODE

OPERATION

CDP1802A, CDP1802AC, CDP1802BC

CDP1802BCEX Datasheet(PDF) 22 Page - Intersil Corporation

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