NEC VERSA 4000 - Table of Contents

iii
Contents
Preface.........................................................................................................................vii
Abbreviations............................................................................................................... ix
Section 1 Technical Information
Hardware Overview..................................................................................................... 1-2
Liquid Crystal Display (LCD)................................................................................ 1-2
CPU Board........................................................................................................... 1-3
I/O Board ............................................................................................................. 1-3
Sound Board......................................................................................................... 1-3
Infrared (IR) Front Assembly, Rear Assembly....................................................... 1-4
Battery Pack......................................................................................................... 1-4
CMOS Battery...................................................................................................... 1-4
Bridge Battery ...................................................................................................... 1-4
PCMCIA Slots...................................................................................................... 1-4
Diskette Drive and the NEC VersaBay II .............................................................. 1-5
Keyboard.............................................................................................................. 1-5
NEC VersaGlide................................................................................................... 1-5
System Memory........................................................................................................... 1-5
Memory Map........................................................................................................ 1-6
System Video............................................................................................................... 1-7
Parallel Interface.......................................................................................................... 1-11
Serial Interface............................................................................................................. 1-12
NEC Versa 4000 Series Chip Set ................................................................................. 1-12
Intel Pentium P54LM............................................................................................ 1-12
Cache Controller, Address Logic, Data Controller................................................. 1-13
System Logic, IDE Interface, Peripheral Controller............................................... 1-13
Flash ROM ........................................................................................................... 1-13
ROM BIOS.................................................................................................... 1-14
VGA Controller.................................................................................................... 1-14
Video Controller Architecture........................................................................ 1-15
Diskette Controller, Serial Interface, Parallel Interface .......................................... 1-15
Keyboard Controller ............................................................................................. 1-15
PCMCIA Controller.............................................................................................. 1-15
Interrupt Controllers............................................................................................. 1-16