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APPLICATION
EXAMPLES
A FROM CPU
<
A,,-A,
PROM
CPU
110
PORT
I
ADDRESS
DECODE
LOGIC
110
WRITE
COMMAND
READ
I--
WAIT
STATE
LOCAL
GENERATOR
8284A
""o"'~
OR
WRITE
ONE
SHOT
J
RDY1
SYSTEM
RESET
(IF
WAIT
STATES
RESET
RST
(IE
IN!T)
b
,--'~
REQUIRED)
.---
READY
RDY2
TRANSFER
ACKNOWLEDGE
[ AEN1
(IE
XACK)
r--
,...-----!'-
AEN2
elK
110
ADDRESS
-
DECODe
lOGIC
r--
~
eLK
MULTIMASTER
B089
..
eA
eLK
1-0
I--
<
CONTROL
BUS
>
8289
L,.
SEL
~
DACK
5
2
-S
O
ORa
ORQl
~
es
AEN
110
INT
Exn
PERIPHERAL
TO/FROM
~o",
ANOTHER lOP
f-
1
-
RQiar
LOCK
l
~
AEN
ORa
ORQ2
es
5
2
-S
O
5
2
-S
O
110
INT
EXT2 ADO-AD7
I
L:
PERIPHERAL
A8-A19
eLK
MRDe
I
V
"'-
LOCK
MWTC
a
INTA
8289
IORC
lowe
v"
lOB
ALE
PDEN
DT/R
DEN
T
DE
STB
DE
STB
~
~.
>
MULTIMASTER
LOCAL
ADDRESS
~
ADDRESS
(AwA91
"-
8282/83
8282183
)
"
,
~
0£"
T
T
DE
...
LOCAL
DATA
~
~
...
MULTIMASTER
DATA
lOa-Col
"'-
8286/87
8286/87
'f
"
Figure 4-13. Typical 8089 Remote Mode Configuration
4-21