Bitfields for OPTi 82C750 Vendetta (device 1) USB interrupt control register: Bit(s) Description ) 7 reserved 6-5 buffered DMA control 00 = original DMA with old protocol 01 = reserved 10 = original DMA with PCI master capability 11 = buffered DMA enable 4 reserved 3-0 IRQ generation when USBIRQ triggered 0000 = disabled 0001-0010 = reserved 0011-0111 = IRQ3-IRQ7 1000 = reserved 1001-1100 = IRQ9-IRQ12 1101 = reserved 1110-1111 = IRQ14-IRQ15 SeeAlso: #00939