MSI MS-6551 Manual de Instruções descarregar pdf (Página 60)

Chapter 3

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sub menu is preceded by a “¾”). The settings are: Auto (ESCD), Manual.

IRQ/DMA Resources

The items are adjustable only when Resources Controlled By is set to Manual.

Press <Enter> and you will enter the sub-menu of the items. IRQ Resources &

DMA Resources list IRQ 3/4/5/7/9/10/11/12/14/15 and DMA 0/1/3/5/6/7 for us-

ers to set each IRQ/DMA a type depending on the type of device using the

IRQ/DMA. Settings are:

PCI/ISA PnP For Plug & Play compatible devices designed for PCI

or ISA bus architecture.

Legacy ISA For devices compliant with the PC AT bus

specification, requiring a specific interrupt.

PCI/VGA Palette Snoop

When set to Enabled, multiple VGA devices operating on different buses can

handle data from the CPU on each set of palette registers on every video

device. Bit 5 of the command register in the PCI device configuration space is

the VGA Palette Snoop bit (0 is disabled). For example, if there are two VGA

devices in the computer (one PCI and one ISA) and the:

The setting must be set to Enabled if any ISA bus adapter in the system

requires VGA palette snooping.

VGA Palette Snoop

Bit Setting Action

Disabled Data read or written by the CPU is only directed to the PCI

VGA device’s palette registers.

Enabled Data read or written by the CPU is directed to both the PCI

VGA device’s palette registers and the ISA VGA device’s pal-

ette registers, permitting the palette registers of both VGA

devices to be identical.

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MSI MS-6551 Manual de Instruções Página 60