IBM 770 manual Contents, System Overview

Contents

Figures . . . . . . . . . . . . . . .

Preface . . . . . . . . . . . . . . .

vii. . . . . . . . . . . . . . . .

ix. . . . . . . . . . . . . . . .

Section 1.	System Overview	. . . . . . . . . 1.-1
Description			. . 1.-2
System	Board Devices	and Features	. . . . 1.-3. .

System Board I/O Address. .Map. . . . . . . . . . . . 1. -5. . .

Specifications. . . . . . . . . . . . . .1-7. . . . . . . . . . . . . . .

Performance Specifications. . . . . . . . . 1.-7 . . . . . . . . .

Physical Specifications. . . . . . . . . . 1. -8 . . . . . . . . . . .

Electrical Specifications. . . . . . . . . . 1.-9 . . . . . . . . . .

Acoustical Readings . . . . . . . . . . . 1-.9 . . . . . . . . . . .

Power Supply				.	. . . . . . . . . . . . 1.-10
Voltages .					. . . . . . . . . . . . .1-10
Output Protection .						. . . . . . . . . . .1-11
Voltage Sequencing						. . . . . . . . . . . 1.-11
Power		Supply			Connector. . . . . . . . . . . . . . . .1.-11. . .
Battery Pack .					. . .		. . . . . . . . . 1.-11
Section 2.	System Board						. . . . . . . . . .		2-.1
Description									2.-2
Microprocessor									2.-2
Cache Memory Operation. . . . . . . . . . . . . . . .2.-2. . .
Cacheable Address Space. . . . . . . . . . . . . . . .2.-3. . .
Bus Adapter									2.-3
Keyboard/Mouse Connector									2-.4
Signals			.	. . . . . . . . . . . . . .2-4
Connector				.	. . . . . . . . . . . . .2-4
Scan Codes					. . . . . . . . . . . . .				2.-5
Keyboard ID									2.-6
Displayable Characters and Symbols. . . . . . . . . . . .2-.7 .
Hard	Disk		Drive Connector. . . . . . . . . . . . . . . . .2-.8 . . .
External		Bus		Connector. . . . . . . . . . . . . . . . . .2.-9 . . . .
UltraBay II Connector. . . . . . . . . . . . . . . . . . 2.-12. . . .
Diskette		Drive			and	Controller. . . . . . . . . . . . . . . 2.-15. . .
Memory		. . . . . . . . . . . . . . .2-16
ROM Subsystem					.	.	.	. . . . . . . . .2-16
RAM Subsystem					. . . . . . . . . . . . 2-.16
System		Memory			Map	. . . . . . . . . . . . . . . . . 2. -17. . . .
System		Board			Memory		for	the DIMM Connectors. . . . . 2-18
 Copyright			IBM		Corp.	1997			iii