COM-portar
| COM-port | IRQ |
|---|---|
| COM1 | 4 |
| COM2 | 3 |
| COM3 | 5 |
| COM4 | 7 |
IRQ
| IRQ | Enhet |
|---|---|
| 0 | Systemtimer |
| 1 | Tangentbordskontroll |
| 2 | Interrupt controller |
| 3 | Seriell port 2 (COM2) |
| 4 | Seriell port 1 (COM1) |
| 5 | Parallell port 2 (LPT2) |
| 6 | Diskettkontroller |
| 7 | Seriell port 4 (COM4) |
| 8 | Realtidsklocka |
| 9 | Parallell port 1 (LPT1) |
| 10 | PS/2-musport |
| 11 | Ljudkort |
| 12 | USB-kontroller |
| 13 | Nätverkskort |
| 14 | Modem |
| 15 | Spelport |
