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PRINTER
CONNECTOR
CHANNEL 4
LOAlO·
LDAT7,
OSR5·0SRs
TRANSCEIVER
Figure 2-2.
IOBP-9
BOARD OPERATION
PROGRAMMABLE
PERIPHERAL
INTERFACE
10BO-
IOB7
ClKBUSO-
CLKBUS7
CLOCK AND
CALENDER
CKT
110
BUFFER
'r----------
ADO-AD?
80186
PROCESSOR
ADO-.I\.015
' - - - - - -
~
(~
SELMBL, HOS T
REFRESH
~
LOGIC
RAS·. CAS'
r--------
AAMCONTROL
AND
ARBITRATION
LOGIC
WRl',
WRH'
~
LOC DEW
1
ADO-AD15
:::)
RAM
BUFFERS
MUlTiBUS"
t)
AORO-.IORF
~
DATO-CIATF
MULTIBUS"
]
BUFFER
Ii
Al-AB
U
00-015
RAM
128K BYTES
i
00-015
~
2336
iSBC
546 Board Functional Block Diagram
2-6
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