50ピンの外部接続用コネクタです。俗にアンフェノールコネクタとも呼ばれます。
| ピン | 信号 | 備考 | ピン | 信号 | 備考 |
|---|---|---|---|---|---|
| 1 | GND | 26 | DB(0) | ||
| 2 | GND | 27 | DB(1) | ||
| 3 | GND | 28 | DB(2) | ||
| 4 | GND | 29 | DB(3) | ||
| 5 | GND | 30 | DB(4) | ||
| 6 | GND | 31 | DB(5) | ||
| 7 | GND | 32 | DB(6) | ||
| 8 | GND | 33 | DB(7) | ||
| 9 | GND | 34 | DB(P) | パリティ | |
| 10 | GND | 35 | GND | ||
| 11 | GND | 36 | GND | ||
| 12 | Reserved | 37 | Reserved | ||
| 13 | Reserved | 38 | TERMPWR | ターミネータ電源 | |
| 14 | Reserved | 39 | Reserved | ||
| 15 | GND | 40 | GND | ||
| 16 | GND | 41 | ATN | ||
| 17 | GND | 42 | GND | ||
| 18 | GND | 43 | BSY | ||
| 19 | GND | 44 | ACK | ||
| 20 | GND | 45 | RST | ||
| 21 | GND | 46 | MSG | ||
| 22 | GND | 47 | SEL | ||
| 23 | GND | 48 | C/D | ||
| 24 | GND | 49 | REQ | ||
| 25 | GND | 50 | I/O |
