Lenovo NetVista IBM PC300 (Type 2169) - Hardware Maintenance Manual (September - Page 53
Integrated Peripherals Option, PIO means Programmed Input/Output. Rather than have - keyboard drivers
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Integrated Peripherals Option This option displays a list of items that defines the operation of some peripheral components on the system's input/output ports. IDE device driver controllers can support up to two separate drives. These drives have a master/slave relationship which is determined by the cabling configuration used to attach them to the controller. PIO means Programmed Input/Output. Rather than have the BIOS issue a series of commands to effect a transfer to or from the disk drive, PIO allows the BIOS to tell the controller what it wants and then let the controller and the CPU perform the complete task by themselves. This is simpler and more efficient. Your system suports five modes, numbered from 0 to 4, which primarily differ in timing. When Auto(default) is selected, the BIOS will select the best available mode. On-Chip Primary PCI IDE On-Chip Secondary PCI IDE Default: Enabled Default: Enabled Use these items to enable or disable the PCI IDE channels that are integrated on this System Board. IDE Primary Master PIO Default: Auto IDE Primary Slave PIO Default: Auto IDE Secondary Master PIO Default: Auto IDE Secondary Slave PIO Default: Auto Each IDE channel supports a master device and a slave device. These four items let you assign which kind of PIO (Programmed Input/Output) is used by IDE devices. You can choose Auto, to let the system auto detect which PIO mode is best, or you can install a PIO mode from 0-4. IDE Primary Master UDMA Default: Auto IDE Primary Slave UDMA IDE Secondary Master UDMA IDE Secondary Slave UDMA Default: Auto Default: Auto Default: Auto Each IDE channel supports a master device and a slave device. This motherboard supports UltraDMA. UltraDMA technology provides faster access to IDE devices. If you install a device which supports UltraDMA, change the appropriate item on this list to Auto. USB Controller Default: Enabled Use this item to enable the USB ports that are integrated on this System Board. USB Keyboard Support Default: Disabled 51