MD80C88B(2008) Просмотр технического описания (PDF) - Intersil

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MD80C88B
(Rev.:2008)

CMOS 8-/16-Bit Microprocessor

Intersil 

Functional Diagram

EXECUTION UNIT

REGISTER FILE

DATA POINTER

AND

INDEX REGS

(8 WORDS)

80C88

BUS INTERFACE UNIT

RELOCATION

REGISTER FILE

SEGMENT REGISTERS

AND

INSTRUCTION POINTER

(5 WORDS)

16-BIT ALU

FLAGS

BUS

INTERFACE

UNIT

SSO/HIGH

4 A19/S6. . . A16/S3

8 AD7-AD0

8 A8-A15

3 INTA, RD, WR

4 DT/R, DEN, ALE, IO/M

TEST

INTR

NMI

RQ/GT0, 1 2

HOLD

HLDA

4-BYTE

INSTRUCTION

QUEUE

CONTROL AND TIMING

LOCK

2

QS0, QS1

3

S2, S1, S0

CLK

3

RESET READY MN/MX GND

VCC

MEMORY INTERFACE

C-BUS

BUS

INTERFACE

UNIT

B-BUS

ES

CS

SS

DS

IP

INSTRUCTION

STREAM BYTE

QUEUE

A-BUS

EXECUTION UNIT

CONTROL SYSTEM

EXECUTION

UNIT

AH

AL

BH

BL

CH CL

DH

DL

SP

BP

SI

DI

ARITHMETIC/

LOGIC UNIT

FLAGS

3

FN2949.4

February 22, 2008

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