A
INDEX
BUSY
139, Intel
80287
100
byte definition, system
BIOS
41
A20
Gate 56
Accessible registers;
RDC
table 2.10
47 serial card table 11.2 124,
pa~allel
card table 11.7 137
AC
inrush current 75
- ACK 138,139
adapter board 32
adapter
to
system hardware interface
81
address
to
system hardware interface
8
address definition
ROM
86
address generation fig. 10 25
address index register
91
address lines, memory expansion card
118
address selection switches 116
address selective parallel port 32, serial
port
J1
121
AEN
31
alphanumeric character
font
96
alphanumeric mode 88
AP
line 56
application path 56
attachment connectors 40
attribute byte 88
AUTO
FD
138
B
BALE
31
backplane I/O; accessory cards 28,
connectors, pin assignments [62]
table 2.4 30, [36] table 2.5
31
basic components, Vectra
PC
fig. 1 2
basic
input/output
systems
53
bidirectional
FIFO
data registers 109
bidirectionaI I/O port add
resses
100
BIOS,
hard disc subsystems table
3.1
53,54
BIOS
interrupt summary table
3.1
53,54
board
ID
register 97
Index
c
capability extensions
101
caution 107
CERBINT
57
character byte
88
characters
61
character generator
ROM
85
clock,
80286
14
clock cycle, memory expansion card
116
clock cycle, multi-mode video adapter
card
81
CMOS RAM memory 42, map table
2.943
color adapter connector
[P3]
pin
assignments table 6.5 85
color reg ister
94
connector, I/O channel fig.
11
28
control-alt-del 57
control interface pin assignments table
2.11 50
controller channels 23
control lines, memory expansion cards
118
control signals
51
CPU
of
processor board 7
CRTC
90
CRT
controller 90
D
- DACKO-3 32
-DACK5-732
data
buffer
register 137
data lines 118
data register
91
data signals 52
DC
power
interface, HP45811 A, pin
assignments table 9.2 105
DC
power
interface, HP45612A, pin
assignments table
9.4
108
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