User`s manual

SBC81206 PICMG 1.0 SBC User’s Manual
Phoenix-Award BIOS Utility
54
interrupt request (IRQ), DMA assignment, and Used DMA fields
disappear, as the BIOS automatically assigns them. The default
value is “Auto (ESCD)”.
z IRQ Resources
When resources are controlled manually, assign each system
interrupt to one of the following types in accordance with the type
of devices using the interrupt:
1. Legacy ISA Devices compliant with the original PC AT bus
specification, requiring a specific interrupt (such as IRQ4 for serial port
1).
2. PCI/ISA PnP Devices compliant with the Plug and Play standard,
whether designed for PCI or ISA bus architecture.
The default value is “PCI/ISA PnP”
.
z DMA Resources
When resources are controlled manually, assign each system DMA
channel as one of the following types, depending on the type of
device using the interrupt:
Legacy ISA Devices compliant with the original PC AT bus
specification, requiring a specific DMA channel.
PCI/ISA PnP Devices compliant with the Plug and Play standard,
whether designed for PCI or ISA bus architecture.
The default value is “PCI/ISA PnP”.
z PCI/VGA Palette Snoop
Some non-standard VGA display cards may not show colors
properly. This item allows you to set whether MPEG ISA/VESA
VGA Cards can work with PCI/VGA or not. When enabled, a
PCI/VGA can work with a MPEG ISA/VESA VGA card; when
disabled, a PCI/VGA cannot work with a MPEG ISA/VESA Card.
** PCI Express relative items **
z Maximum Payload Size
When using DDR SDRAM and Buffer size selection, another
consideration in designing a payload memory is the size of the
buffer for data storage. Maximum Payload Size defines the
maximum TLP (Transaction Layer Packet) data payload size for
the device
.
Press <Esc> to return to the Main Menu page.