Filter
Top Products
8255A18255A·5
MODE 2
AND
MODE 0 (INPUT)
\----INTR
A
PC,
1---_
OBF
A
CONTROL
WORD
07
0
6
05
04
03 02
0,
DO
I,
I,
e><rXt><J
° I
']0\
PC
z
.()
PC,
1----
IBFA
1'"
INPUT
o
~
OUTPUT
3
PC
z
.()
-+-1/0
MODE 2
AND
MODE 1 (OUTPUT)
PC,
1---_
INTRA
PC,
OBF
A
CONTAOl
WORD
PC,
ACK
A
07
Os
05 04
0
3
02
01
00
I, I,
k)(D1)<H
°
[XJ
PC,
STB
A
PC,
IBFA
PB
7
"PB
a
PC,
OBFs
RO--_~
PC,
ACK
a
WR--_~
pc.
INTRa
Figure
14.
MODE 2 Combinations
9·29
MODE 2
AND
MODE 0 (OUTPUT)
CONTROL WORD
07
0
6
05 04 03
02
0,
DO
\,
I,
e><rXt><J
° I
0:]"\
pc,.
1'"
INPUT
0=
OUTPUT
PC,
t----
INTRA
PC,
PC
6
--ACK
A
3
PC
Z
.()
-+-
I/O
MODE 2
AND
MODE 1
(INPUT)
PC,
1---_
INTRA
PC,
OBF
A
CONTROL WORD
PC,
-ACK
A
0,
0
6
Os
04
03
02
0,
0.
1,I'NXCX1,I,[XJ
PC,
STB
A
IBFA
PC,
-s=rEIrJ
PC,
1BFa
pc.
INTRa
AFN-00744A-'3