Epson EISA Tower Product Information Manual - Page 3

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Processor Board Maps

board
486DX/33 processor
Intel 80486DX 33 MH
Weitek WTL4167 math
microprocessor
coprocessor socket
(with heat sink)
\
486SX/25
processor board
Weitek WTL4167 math
coprocessor socket
\
Main System Board Connectors
Parallel Port Connector (CN5)
Pin 13
Pin 25
Parallel port connector pin assignments
EISA
Series Computers
cache module
Z
\
processor board
interface connectors
Intel 80487SX
Intel 80487SX
microprocessor
coprocessor
processor board
interface connectors
Pin 14
Serial Port Connector (CN3, CN4)
Serial port connector pin assignments
Pin
Signal
Data Carrier Detect
1
2
Receive Data
Transmit Data
3
4
Data Terminal Ready
5
not used
Keyboard and Mouse Connectors (CN1, CN2)
Keyboard connector pin assignments
Mouse connector pin assignments
Pin Signal
1
Mouse Data
2
Resewed
3
Ground
Note: Although the keyboard and mouse connectors are physically
identical, they cannot be used interchangeably.
1/92
EISA Series Tower
Pin
Signal
6
Data Set Ready
7
Request To sand
8
Clear To Send
Ring Indicator
9
Pin
Signal
4
+5 VDC (fused)
5
Mouse Clock
6
Resewed
Tower-3
,