CDP1802AC3 datasheet(21/27 Pages) INTERSIL

21 / 27 page

FN1441.3

October 17, 2008

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 12)

R(P) + 1

→ R(P)

LONG SKIP (See NLBR)

LSKP

(Note 12)

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 13)

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

RESET Q

REQ

→ Q

SAVE

SAV

→ M(R(X))

PUSH X, P TO STACK

MARK

(X, P)

→ T; (X, P) → M(R(2)), THEN P → X; R(2) - 1 → R(2)

RETURN

RET

M(R(X))

→ (X, P); R(X) + 1 → R(X), 1 → lE

DISABLE

DlS

M(R(X))

→ (X, P); R(X) + 1 → R(X), 0 → lE

INPUT - OUTPUT BYTE TRANSFER

OUTPUT 1

OUT 1

M(R(X))

→ BUS; R(X) + 1 → R(X); N LINES = 1

OUTPUT 2

OUT 2

M(R(X))

→ BUS; R(X) + 1 → R(X); N LINES = 2

OUTPUT 3

OUT 3

M(R(X))

→ BUS; R(X) + 1 → R(X); N LINES = 3

OUTPUT 4

OUT 4

M(R(X))

→ BUS; R(X) + 1 → R(X); N LINES = 4

OUTPUT 5

OUT 5

M(R(X))

→ BUS; R(X) + 1 → R(X); N LINES = 5

OUTPUT 6

OUT 6

M(R(X))

→ BUS; R(X) + 1 → R(X); N LINES = 6

OUTPUT 7

OUT 7

M(R(X))

→ BUS; R(X) + 1 → R(X); N LINES = 7

INPUT 1

INP 1

BUS

→ M(R(X)); BUS → D; N LINES = 1

INPUT 2

INP 2

BUS

→ M(R(X)); BUS → D; N LINES = 2

INPUT 3

INP 3

BUS

→ M(R(X)); BUS → D; N LINES = 3

INPUT 4

INP 4

BUS

→ M(R(X)); BUS → D; N LINES = 4

INPUT 5

INP 5

BUS

→ M(R(X)); BUS → D; N LINES = 5

TABLE 4. INSTRUCTION SUMMARY (See Notes 11 through 16) (Continued)

INSTRUCTION

MNEMONIC

CODE

OPERATION

CDP1802AC/3

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