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Model 80 Planar Memory
30-pin IBM SIMM Memory
72-pin IBM SIMM Memory
30-pin IBM SIMM Memory
| Pin | Signal |
|---|
| 1 | +5 Vdc |
| 2 | -CAS |
| 3 | MD0 |
| 4 | MA0 |
| 5 | MA1 |
| 6 | MD1 |
| 7 | MA2 |
| 8 | MA3 |
| 9 | Ground |
| 10 | MD2 |
| 11 | MA4 |
| 12 | MA5 |
| 13 | MD3 |
| 14 | MA6 |
| 15 | MA7 |
| 16 | MD4 |
| 17 | MA8 |
| 18 | MA9 |
| 19 | Reserved (MA10?) |
| 20 | MD5 |
| 21 | -WE |
| 22 | Ground |
| 23 | MD6 |
| 24 | Reserved (MA11?) |
| 25 | MD7 |
| 26 | PD2 |
| 27 | -RAS0 |
| 28 | -CAS |
| 29 | PIN/POUT |
| 30 | +5 Vdc |
72-pin IBM SIMM Memory
| Pin | Signal | Pin | Signal |
|---|
| 1 | Ground | 37 | Parity 1/Data 36** |
| 2 | Data 0 | 38 | Parity 3/Data 38** |
| 3 | Data 16 | 39 | Ground |
| 4 | Data 1 | 40 | Column address strobe 0 |
| 5 | Data 17 | 41 | Column address strobe 2 |
| 6 | Data 2 | 42 | Column address strobe 3 |
| 7 | Data 18 | 43 | Column address strobe 1 |
| 8 | Data 3 | 44 | Row address strobe 0 |
| 9 | Data 19 | 45 | Row address strobe 1 |
| 10 | +5 Vdc | 46 | Block select 1/Data 33** |
| 11 | -Column address strobe parity | 47 | Write enable |
| 12 | Address 0 | 48 | Reserved/Ground** |
| 13 | Address 1 | 49 | Data 8 |
| 14 | Address 2 | 50 | Data 24 |
| 15 | Address 3 | 51 | Data 9 |
| 16 | Address 4 | 52 | Data 25 |
| 17 | Address 5 | 53 | Data 10 |
| 18 | Address 6 | 54 | Data 26 |
| 19 | Reserved/Address 10** | 55 | Data 11 |
| 20 | Data 4 | 56 | Data 27 |
| 21 | Data 20 | 57 | Data 12 |
| 22 | Data 5 | 58 | Data 28 |
| 23 | Data 21 | 59 | +5 Vdc |
| 24 | Data 6 | 60 | Data 29 |
| 25 | Data 22 | 61 | Data 13 |
| 26 | Data 7 | 62 | Data 30 |
| 27 | Data 23 | 63 | Data 14 |
| 28 | Address 7 | 64 | Data 31 |
| 29 | Block select 0/Data 32** | 65 | Data 15 |
| 30 | +5 Vdc | 66 | Block select 2/Data 34** |
| 31 | Address 8 | 67 | Presence detect 0 |
| 32 | Address 9 | 68 | Presence detect 1 |
| 33 | Row address strobe 3 | 69 | Presence detect 2 |
| 34 | Row address strobe 2 | 70 | Presence detect 3 |
| 35 | Parity 2/Data 37** | 71 | Block select 3/Address 11** |
| 36 | Parity 0/Data 35** | 72 | Ground |
Notes:
** These signals are used with ECC memory.
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