| I/O Port Pin Assignment | |||||
A.2 <Floppy Port> |
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Connector: FDD |
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Type: |
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| Pin | Description | Pin | Description |
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| 1 | VCC | 2 | INDEX |
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| 3 | VCC | 4 | DRV0 |
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| 5 | VCC | 6 | DSKCHG |
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| 7 | DRV1 | 8 | N/C |
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| 9 | MTR1 | 10 | MTR0 |
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| 11 | RPM | 12 | DIR |
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| 13 | N/C | 14 | STEP |
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| 15 | Ground | 16 | WRITE DATA |
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| 17 | Ground | 18 | WRITE GATE |
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| 19 | N/C | 20 | TRACK 0 |
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| 21 | N/C | 22 | WRPTR |
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| 23 | Ground | 24 | RDATA- |
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| 25 | Ground | 26 | SEL |
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A.3 <Serial Port> |
| 1 | 2 |
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Connector: COM1/2 |
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Type: |
| 10 |
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| 9 |
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| Pin | Description | Pin | Description |
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| 1 | DCD- | 6 | DSR- |
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| 2 | SIN- | 7 | RTS- |
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| 3 | SO- | 8 | CTS- |
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| 4 | DTR- | 9 | RI |
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| 5 | Ground | 10 | N/C |
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Floppy Port | 39 |