CDP1802ACE datasheet(23/28 Pages) INTERSIL

23 / 28 page

3-25

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)

LONG BRANCH lF Q = 0

LBNQ

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

→ R(P).1, M(R(P) + 1) → R(P).0

EISE R(P) + 2

→ R(P)

SKIP INSTRUCTIONS

SHORT SKIP (See NBR)

SKP

(Note 2)

R(P) + 1

→ R(P)

LONG SKIP (See NLBR)

LSKP

(Note 2)

R(P) + 2

→ R(P)

LONG SKIP IF D = 0

LSZ

IF D = 0, R(P) + 2

→ R(P), ELSE CONTINUE

LONG SKIP IF D NOT 0

LSNZ

IF D Not 0, R(P) + 2

→ R(P), ELSE CONTINUE

LONG SKIP IF DF = 1

LSDF

IF DF = 1, R(P) + 2

→ R(P), ELSE CONTINUE

LONG SKIP IF DF = 0

LSNF

IF DF = 0, R(P) + 2

→ R(P), ELSE CONTINUE

LONG SKIP lF Q = 1

LSQ

IF Q = 1, R(P) + 2

→ R(P), ELSE CONTINUE

LONG SKIP IF Q = 0

LSNQ

IF Q = 0, R(P) + 2

→ R(P), ELSE CONTINUE

LONG SKIP IF lE = 1

LSlE

IF IE = 1, R(P) + 2

→ R(P), ELSE CONTINUE

CONTROL INSTRUCTIONS

IDLE

lDL

(Note 3)

WAIT FOR DMA OR INTERRUPT; M(R(0))

→ BUS

NO OPERATION

NOP

CONTINUE

SET P

SEP

→ P

SET X

SEX

→ X

SET Q

SEQ

→ Q

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

INSTRUCTION

MNEMONIC

CODE

OPERATION

CDP1802A, CDP1802AC, CDP1802BC

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