Acer Aspire M5600 Aspire M3600 - M5600 Service Guide - Page 46

PnP/PCI Configurations This options configure how PnP (Plug and Play) and PCI expansion cards operate in your system. Both the ISA and PCI buses on the main board use system IRQs (Interrupt ReQuests) and DMAs (Direct Memory Access). You must set the IRQ and DMA assignments correctly through the PnP/PCI Configurations Setup utility for the main board to work properly. Selecting PnP/PCI Configurations on the main board program screen displays this menu: Phoenix-AwardBIOS CMOS Setup Utility PnP/PCI Configurations Init Display First [PCI Slot] Reset Configuration Data [Disabled] Resources Controlled By [Auto(ESCD)] X IRQ Resources Press Enter Item Help Menu Level f PCI/VGA Palette Snoop Assign IRQ For USB INT Pin 1 Assignment INT Pin 2 Assignment INT Pin 3 Assignment INT Pin 4 Assignment INT Pin 5 Assignment INT Pin 6 Assignment INT Pin 7 Assignment INT Pin 8 Assignment [Disabled] [Auto] [Auto] [Auto] [Auto] [Auto] [Auto] [Auto] [Auto] [Auto] ** PCI Express relatvie items** Maximum Payload Size [4096] mnlk: Move Enter: Select +/-/PU/PD:Value F10:Save ESC:Exit F1: General Help F5:Previous Values F7:Optimized Defaults T Init Display First (PCI Slot): This item allows you to choose the primary display card. T Reset Configuration Data (Disabled): If you enable this item and restart the system, any Plug and Play configuration data stored in the BIOS Setup is cleared from memory. T Resources Controlled by (Auto (ESCD)): You should leave this item at the default Auto (ESCD). Under this setting, the system dynamically allocates resources to Plug and Play devices as they are required. T IRQ Resources: In the IRQ Resources submenu, if you assign an IRQ to Legacy ISA, then that Interrupt Request Line is reserved for a legacy ISA expansion card. Press to close the IRQ Resources submenu. In the Memory Resources submenu, use the first item Reserved Memory Base to set the start address of the memory you want to reserve for the ISA expansion card. Use the section item Reserved Memory Length to set the amount of reserved memory. Press to close the Memory Resources submenu. T PCI/VGA Palette Snoop (Disabled): This item is designed to overcome problems that can be caused by some non-standard VGA cards. This board includes a built-in VGA system that does not require palette snooping so you must leave this item disabled. T Assign IRQ for USB (Enabled): This item enables or disables IRQ allocation for the USB. T INT Pin 1-8 Assignment (Auto): Identifies the interrupt request (IRQ) line assigned to a device connected to the PCI interface of the system. T Maximum Payload Size (4096): This item specifies the maximum TLP payload size for the PCI Express devices. The unit is byte. 38 Chapter 2