(at the computer)
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SIMM=Single Inline Memory Module.
(at the computer)
30 PIN SIMM at the computer.
| Pin | Name | Description |
|---|---|---|
| 1 | VCC | +5 VDC |
| 2 | /CAS | Column Address Strobe |
| 3 | DQ0 | Data 0 |
| 4 | A0 | Address 0 |
| 5 | A1 | Address 1 |
| 6 | DQ1 | Data 1 |
| 7 | A2 | Address 2 |
| 8 | A3 | Address 3 |
| 9 | GND | Ground |
| 10 | DQ2 | Data 2 |
| 11 | A4 | Address 4 |
| 12 | A5 | Address 5 |
| 13 | DQ3 | Data 3 |
| 14 | A6 | Address 6 |
| 15 | A7 | Address 7 |
| 16 | DQ4 | Data 4 |
| 17 | A8 | Address 8 |
| 18 | A9 | Address 9 |
| 19 | A10 | Address 10 |
| 20 | DQ5 | Data 5 |
| 21 | /WE | Write Enable |
| 22 | GND | Ground |
| 23 | DQ6 | Data 6 |
| 24 | A11 | Address 11 |
| 25 | DQ7 | Data 7 |
| 26 | QP | Data Parity Out |
| 27 | /RAS | Row Address Strobe |
| 28 | /CASP | Something Parity ???? |
| 29 | DP | Data Parity In |
| 30 | VCC | +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.
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