Connector - 30 pin SIMM

SIMM=Single Inline Memory Module.

30 PIN SIMM at the computer.

30 PIN SIMM (at the computer)
PinNameDescription
1VCC+5 VDC
2/CASColumn Address Strobe
3DQ0Data 0
4A0Address 0
5A1Address 1
6DQ1Data 1
7A2Address 2
8A3Address 3
9GNDGround
10DQ2Data 2
11A4Address 4
12A5Address 5
13DQ3Data 3
14A6Address 6
15A7Address 7
16DQ4Data 4
17A8Address 8
18A9Address 9
19A10Address 10
20DQ5Data 5
21/WEWrite Enable
22GNDGround
23DQ6Data 6
24A11Address 11
25DQ7Data 7
26QPData Parity Out
27/RASRow Address Strobe
28/CASPSomething Parity ????
29DPData Parity In
30VCC+5 VDC

Note: SIMM above is a 4MBx9.
QP & DP is N/C on SIMMs without parity.
A9 is N/C on 256kB.
A10 is N/C on 256kB & 1MB. A11 is N/C on 256kB, 1MB & 4MB.

Source: HW-Book 2001-06-08
Last modified: 2007-06-27 14:22:56.0
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