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HP 13255 Manual page 6

Memory controller module
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13255
Memory Controller
Table 5.0
Connector Information
13255-91252/04
Rev
JUN-23-81
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
Connector
I
Signal
Signal
and Pin No.
I
Name
Description
------------- -------------- -------------------------------------------------
------------- -------------- -------------------------------------------------
P1, Pin 1
+5V
+5 Volt Power Supply
-2
GND
Ground Common Return (Power and Signal)
-3
SYSCLK
4.915 MHz System Clock
-4
Not Used
-5
ADDRO
Negative True, Address Bit 0
-6
ADDR1
Negative True, Address Bit 1
-1
ADDR2
Negative True, Address Bit 2
-8
ADDR3
Negative True, Address Bit 3
-9
ADDR4
Negative True, Address Bit 4
-10
ADDR5
Negative True, Address Bit 5
-11
ADDR6
Negative True, Address Bit 6
-12
ADDR1
Negative True, Address Bit 1
-13
ADDRa
Negative True, Address Bit 8
-14
ADDR9
Negative True, Address Bit 9
-15
ADDR10
Negative True, Address Bit 10
-16
ADDR11
Negative True, Address Bit 11
-11
ADDR12
Negative True, Address Bit 12
-18
ADDR13
Negative True, Address Bit 13
-19
ADDR14
Negative True, Address Bit 14
-20
ADDR15
Negative True, Address Bit 15
-21
10
Negative True, Input Output/Memory
-22
GND
Ground Common Return (Power and Signal)
==============-=================================================================

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