| DREQ Line | Used By/Available |
| DREQ0 | Defaults to OPL3-SA3 audio controller |
| DREQ1 | Defaults to OPL3-SA3 audio controller |
| DREQ2 | Generated by I/O controller to enable DMA cycle for attached diskette drive |
| DREQ3 | Parallel port (ECP) |
| DREQ4 | Reserved |
| DREQ5 | Available |
| DREQ6 | Available |
| DREQ7 | Available |