CDP1805ACE datasheet(20/30 Pages) INTERSIL

20 / 30 page

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 11)

R(P) + 2

→ R(P)

LONG BRANCH IF D = 0

LBZ

IF 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

IF 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 IF Q = 0

LBNQ

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

→ R(P).1

M(R(P) + 1)

→ R(P).0

ELSE R(P) + 2

→ R(P)

SKIP INSTRUCTIONS

SHORT SKIP (See NBR)

SKP

(Note 11)

R(P) + 1

→ R(P)

LONG SKIP (See NLBR)

LSKP

(Note 11)

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 IF 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 MIE = 1

LSIE

IF MIE = 1, R(P) + 2

→ R(P)

ELSE CONTINUE

CONTROL INSTRUCTIONS

IDLE

IDL

(Note 14)

STOP ON TPB; WAIT FOR DMA OR INTERRUPT;

BUS FLOATS

NO OPERATION

NOP

CONTINUE

SET P

SEP

→ P

SET X

SEX

→ X

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

INSTRUCTION

NO. OF

MACHINE

CYCLES

MNEMONIC

OP CODE

OPERATION

CDP1805AC, CDP1806AC

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