Asus P2L97 P2L97 User Manual - Page 51

IV. BIOS SOFTWARE DMA x Used By ISA (No/ICU) These fields indicate whether or not the displayed DMA channel for each field is being used by a legacy (non-PnP) ISA card. Available options include: No/ICU and Yes. The first option, the default setting, indicates either that the displayed DMA channel is not used or an ICU is being used to determine if an ISA card is using that channel. If you install a legacy ISA card that requires a unique DMA channel, and you are not using an ICU, you must set the field for that channel to Yes. ISA MEM Block BASE (No/ICU) This field allows you to set the base address and block size of a legacy ISA card that uses any memory segment within the C800H and DFFFH address range. If you have such a card, and you are not using an ICU to specify its address range, select a base address from the six available options; the ISA MEM Block SIZE field will then appear for selecting the block size. If you have more than one legacy ISA card in your system that requires to use this address range, you can increase the block size to either 8K, 16K, 32K, or 64K. If you are using an ICU to accomplish this task, leave ISA MEM Block BASE to its default setting of No/ICU. USB IRQ (Enabled) Enabled reserves an IRQ# for the USB to work, Disabled does not allow the USB to have an IRQ# and therefore prevents the USB from functioning. If you do not use USB devices, you may Disable this feature to save an extra IRQ# for expansion cards. VGA BIOS Sequence (PCI/AGP) If your computer has both PCI and AGP VGA cards, this field allows you to select which of the cards will act as your primary card. The default, PCI/AGP, allows your PCI card to take precedent when detected. AGP/PCI uses the AGP card as your primary card. IV. BIOS (Plug & Play / PCI) ASUS P2L97 User's Manual 51