IBM AT 5170 Technical Reference page 489

interrupt 1-12
refresh 1-7
coprocessor controls 1-39
coprocessor programming 2-3
coprocessor, math 2-3
copy protection 9-5,9-14
Ctrl state 5-18
CTS 6-18
CWD 6-9
cycle
bus 1-7
clock 1-7
microprocessor 1-7
D
DACK 0-3 and 5-7 1-35
DAS 6-8
data area, ROM BIOS 9-14
data communication
equipment 8-3
data input, keyboard 4-13
data line, keyboard 1-54, 4-5,
4-12,4-13
data output, keyboard 4-13
data stream 4-12
data terminal equipment 8-3
data transfer instructions 6-3,
6-22
data transfer rate,
diskette 9-6
DEC 6-7,6-8
decodes, memory 1-11, 1-31
DECSTP 6-28
default segment
workspace 5-9
~
description
descriptors 1-5
device driver code 9-16
diagnostic checkpoint
port 1-39
direct memory access 1-9
disk pointer 9-12
disk base 9-6, 9-12
diskette change signal 9-6
diskette data transfer rate 9-6
diskette rotational speed 9-6
diskette track density 9-6
diskette write current 9-7
DIV 6-9
divide error exception 9-9
DMA address generation 1-9
DMA channels 1-7, 1-9
DMA controller 1-7
DMA controller command
codes 1-11
DMA controller 1 1-9
DMA controller 2 1-10
DMA controllers
1-9
DOS 9-7
DOS function calls 9-10
DOS interrupts 5-6
DRQO-DRQ3 1-34
DRQ5-DRQ7 1-34
E
EIA/CCITT 8-3
enable NMI 1-38
encoding, keyboard 5-13
ENTER 6-16
ESC 6-18
exception, divide error 9-9
extended ASCII 5-14
extended codes 5-18
Index-3