IBM Personal System/2 50 - Page 63

index
A
acoustic readings 1-10
activity light, fixed disk 3-26
adapter ID (0000) 3-3
adapter setup 2-4
address maps
memory 3-8
POS 2-5
system 1-6
address space,POS 2-5
alternate reset 3-26
arbiter programming 3-5
arbiter refresh 3-4
arbitration level 3-4
arbitration register 3-5
arbitration, central control
point 3-5
A20 gate 3-26
base memory bytes 3-23
battery 3-12
block diagram, system board 1-5
bus contention 2-3
bus priority assignments 3-4
Cc
card selected feedback 2-6
-CDSFDBK 2-6
central arbitration contro! point 3-5
channel-check latch 3-25
CMOS RAM_ 3-12
configuration CRC bytes 3-23
configuration, RT/CMOS 3-19
connectors, memory 3-9
control portB 3-24
© Copyright IBM Corp. 1989, 1990
D
date century byte 3-23
description
programmable option select 2-3
description, power supply 1-11
diagnostic status byte
(RT/CMOS) 3-19
diskette drive enable 2-9
diskette drive type byte 3-20
DMA channels 3-4
electrical requirements 1-9
enable I/O functions 2-8
enable NMI 3-13
enable/setup register 2-7
enable, channel check 3-25
equipment byte 3-22
extended arbitration 3-5
F
fault, overvoltage 1-12
features, system 1-4
feedback, card selected 2-6
first fixed disk type byte 3-21
fixed disk drive activity light 1-11
fixed disk drive initialization 3-19
fixed-disk activity light 3-26
G
gate A20 3-26
H
heat output 1-9
X-1