Lenovo PC 300 IBM PC300 (Type 2169) - Hardware Maintenance Manual (September 2 - Page 54
Request Line IRQ., IDE HDD Block Mode
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Enable this item if you are using a keyboard connected through the USB Port. Ensure the USB controller is enabled. Init Display First Default: PCI Slot Use this item to define if your graphics adapter is installed in one of the PCI slots or select Onboard if you have a graphics system integrated on the System Board. Onboard PCI Audio Default: Enabled Your PC has an integrated PCI audio system, use this item to enable or disable it. Hardware Reset Default: Enabled If you enable this item, you can reset the system by pressing a hardware reset button if you have connected this function to the mainboard. IDE HDD Block Mode Default: Enabled Block mode transfers can improve the access to IDE devices. Enable this item if your IDE devices support block mode transfers. Onboard FDC Controller Default: Enabled Use this item to turn on or off the floppy disk controller that is built into this System Board. Onboard Serial Port 1 Default: 3F8/IRQ4 This item lets you disable the built-in serial port 1, or enable it by assigning an I/O address and an Interrupt Request Line (IRQ). Onboard Serial Port 2 Default: Disable On some models this item lets you disable the built-in serial port 2, or enable it by assigning an I/O address and an Interrupt Request Line (IRQ). UART Mode Select Default: Normal UR2 Duplex Mode DefaultL Half This item defines the operation of serial port 2. In the Normal setting, serial port 2 is assigned to the external COM2 connector. If you have installed an optional infrared port, you must change the setting of this item to one of the Infrared settings (usually IrDA or FIR). These settings will disable the external COM2 serial port connector and assign the resources to the infrared device. If you have selected an IR mode, use the following item UR2 Duplex Mode to define if the IR port is full duplex or half duplex. Onboard Parallel Port Default: 378/IRQ7 52