c
use
of
5-3
bit map,
I/O
8255A 1-31
block diagram (coprocessor) 2-6
break (keyboard extended code) 5-21
CCITT
8-3
standards 8-3
CH
CK,negative (-channel check),
I/O
channel 1-21
channel check, negative
(-CH
CK),
I/O
channel 1-21
character codes (keyboard)
5-15,5-17
character set
quick reference 7
-12
clock (CLK),
I/O
channel 1-20
communications 8-3
component diagram, system board 1-16
D
data
bits
0 to 7 (DO-D7) 1-21
flow, system board diagram 1-5
decimal integers (coprocessor)
2-3,2-4
description
I/O
channel 1-20
diagram system
board
1-16
diagram,
110
channel 1-18
DMA
request 1 to 3
(DRQI-DRQ3)
1-21
DOS,
keyboard function
5-8,5-14,5-22
keyboard functions 5-24
Index-2