Hardware Details on the 8088

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Chapter 10
EE314Microprocessor Systems

• Hardware Details on the 8088

Objectives The general specification on the 8088
microprocessors The processors control signal
names and specifications General signal
relationship and timings Methods by which the
8088 can interface with external devices The
external interrupt signals and their
operations The 8088 bus controller The method
used to access an 8085 peripheral
Based on "An Introduction to the Intel Family of
Microprocessors" by James L. Antonakos
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10.3 CPU pin descriptions
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10.3 CPU pin descriptions
8088 Status Signals
8088 Signal Summary
Comparison of NMI and INTR
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10.4 The 8284 Clock Generator
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10.5 The 8288 Bus Controller
Memory ReaD Command Memory WriTe
Command Input/Output Read Command Input/Output
Write Command INTerrupt Acknowledge Advanced
Memory Write Command Advanced Input/Output Write
Command
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10.6 System Time Diagrams - CPU Bus Cycle
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10.6 System Time Diagrams - INT and HOLD
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10.7 Personal Computer Bus Standards
Medium Complexity PC Architecture
CPU
?P Bus
Simple ?P System Architecture
Cash Memory
Memory Controller
Main Memory
Memory Bus
CPU
?P Bus
I/O Bus Controller
Plug-in I/O Boards
Memory
I/O
- ISA Industry Standard Architecture (8 data
bits PC-XT bus, or 16 data bits PC-AT bus) -
EISA Extended ISA - MCA Micro Channel
Architecture (only IBM)
Motherboard I/O Circuits
PCI (Peripheral Component Interconnect bus) based
Architecture
CPU
?P Bus
Cash Memory
Memory Controller
Main Memory
Memory Bus
Motherboard- and Fast Plug-in I/O Circuits
Bridge Controller
I/O Bus Controller
Slow Plug-in I/O Boards
I/O Bus
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10.7 Personal Computer Bus Standards - ISA Bus
D18 D1 C18 C1