Chapter 4 BIOS Setup40 Reference Manual LittleBoard 8005. Use the key to select the screen menus listed in the Opening BIOS screen.PCI-ISA Bridge MappingThe LittleBoard 800 supports ISA bus based modules with an on-board PCI-ISA bridge. The PCI-ISAbridge optionally maps the following resources to ISA based modules:• IRQs• DMA ChannelsThe LittleBoard 800 system BIOS, maps the above resources based on information provided in the BIOSSetup screens. By default, IRQs or DMA channels to be mapped to ISA modules must be explicitly specifiedby the user in the BIOS Setup screens.The IRQs and DMA channels are mapped with the “PCIPnP/IRQx” fields in BIOS setup (where x specifiesthe IRQ number.) The IRQs 3, 4, 5, 7, 9, 10, 11, 14, and 15 can be mapped to ISA based modules bychanging the default setting for these IRQs from “Available” to “Reserved”.Any of the DMA channels 0, 1, 3, 5, 6, 7 can be mapped to ISA modules by changing the default setting of“Available” to “Reserved”.Logo Screen Utility (Splash Screen)The LittleBoard 800 BIOS supports a graphical logo utility, which can be customized by the user anddisplayed when enabled through the BIOS Setup Utility. The graphical image can be a company logo or anycustom image the user wants to display during the boot process. The custom image can be displayed as thefirst image displayed on screen during the boot process and remain there, depending on the options selectedin BIOS Setup, while the OS boots.Logo Screen Image RequirementsThe user’s image may be customized with any standard image editing tool.The LittleBoard 800 logo screen utility supports the following image formats:• Bitmap image• Exactly 640 x 480 pixels• Exactly 16 colorsNOTE The serial console port is not hardware protected, and is not listed in the COM tablewithin BIOS Setup. Diagnostic software that probes hardware addresses may cause aloss or failure of the serial console functions.NOTE For procedures on loading custom images, see the logo screen utility documentavailable on the Ampro By ADLINK website.
