Memory Pinouts

   Model 80 Planar Memory

   30-pin SIMM Memory
   72-pin SIMM Memory


30-pin SIMM Memory

PinSignal
1+5 Vdc
2-CAS
3MD0
4MA0
5MA1
6MD1
7MA2
8MA3
9Ground
10MD2
11MA4
12MA5
13MD3
14MA6
15MA7
16MD4
17MA8
18MA9
19Reserved (MA10?)
20MD5
21-WE
22Ground
23MD6
24Reserved (MA11?)
25MD7
26PD2
27-RAS0
28-CAS
29PIN/POUT
30+5 Vdc


72-pin SIMM Memory

PinSignalPinSignal
1Ground37Parity 1/Data 36**
2Data 038Parity 3/Data 38**
3Data 1639Ground
4Data 140Column address strobe 0
5Data 1741Column address strobe 2
6Data 242Column address strobe 3
7Data 1843Column address strobe 1
8Data 344Row address strobe 0
9Data 1945Row address strobe 1
10+5 Vdc46Block select 1/Data 33**
11-Column address strobe parity47Write enable
12Address 048Reserved/Ground**
13Address 149Data 8
14Address 250Data 24
15Address 351Data 9
16Address 452Data 25
17Address 553Data 10
18Address 654Data 26
19Reserved/Address 10**55Data 11
20Data 456Data 27
21Data 2057Data 12
22Data 558Data 28
23Data 2159+5 Vdc
24Data 660Data 29
25Data 2261Data 13
26Data 762Data 30
27Data 2363Data 14
28Address 764Data 31
29Block select 0/Data 32**65Data 15
30+5 Vdc66Block select 2/Data 34**
31Address 867Presence detect 0
32Address 968Presence detect 1
33Row address strobe 369Presence detect 2
34Row address strobe 270Presence detect 3
35Parity 2/Data 37**71Block select 3/Address 11**
36Parity 0/Data 35**72Ground

Notes:
   ** These signals are used with ECC memory.


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