GXM datasheet(170/244 Pages) NSC

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170

Revision 3.1

Virtual Subsystem Architecture (Continued)

Table 5-3. VGA Configuration Registers

Bit

Description

Index B9h

VGACTL Register (R/W)

Default Value = 00h

7:3

Reserved: Set to 0.

SMI generation for VGA memory range B8000h to BFFFFh: 0 = Disable; 1 = Enable

SMI generation for VGA memory range B0000h to B7FFFh: 0 = Disable; 1 = Enable.

SMI generation for VGA memory range A0000h to AFFFFh: 0 = Disable; 1 = Enable

Index BAh-BDh

VGAM Register (R/W)

Default Value = xxxxxxxxh

SMI generation for address range AF800h to AFFFFh: 0 = Disable; 1 = Enable.

SMI generation for address range AF000h to AF7FFh: 0 = Disable; 1 = Enable.

SMI generation for address range AE800h to AEFFFh: 0 = Disable; 1 = Enable.

SMI generation for address range AE000h to AE7FFh: 0 = Disable; 1 = Enable.

SMI generation for address range AD800h to ADFFFh: 0 = Disable; 1 = Enable.

SMI generation for address range AD000h to AD7FFh: 0 = Disable; 1 = Enable.

SMI generation for address range AC800h to ACFFFh: 0 = Disable; 1 = Enable.

SMI generation for address range AC000h to AC7FFh: 0 = Disable; 1 = Enable.

SMI generation for address range AB800h to ABFFFh: 0 = Disable; 1 = Enable.

SMI generation for address range AB000h to AB7FFh: 0 = Disable; 1 = Enable.

SMI generation for address range AA800h to AAFFFh: 0 = Disable; 1 = Enable.

SMI generation for address range AA000h to AA7FFh: 0 = Disable; 1 = Enable.

SMI generation for address range A9800h to A9FFFh: 0 = Disable; 1 = Enable.

SMI generation for address range A9000h to A97FFh: 0 = Disable; 1 = Enable.

SMI generation for address range A8800h to A8FFFh: 0 = Disable; 1 = Enable.

SMI generation for address range A8000h to A87FFh: 0 = Disable; 1 = Enable.

SMI generation for address range A7800h to A7FFFh: 0 = Disable; 1 = Enable.

SMI generation for address range A7000h to A77FFh: 0 = Disable; 1 = Enable.

SMI generation for address range A6800h to A6FFFh: 0 = Disable; 1 = Enable.

SMI generation for address range A6000h to A67FFh: 0 = Disable; 1 = Enable.

SMI generation for address range A5800h to A5FFFh: 0 = Disable; 1 = Enable.

SMI generation for address range A5000h to A57FFh: 0 = Disable; 1 = Enable.

SMI generation for address range A4800h to A4FFFh: 0 = Disable; 1 = Enable.

SMI generation for address range A4000h to A47FFh: 0 = Disable; 1 = Enable.

SMI generation for address range A3800h to A3FFFh: 0 = Disable; 1 = Enable.

SMI generation for address range A3000h to A37FFh: 0 = Disable; 1 = Enable.

SMI generation for address range A2800h to A2FFFh: 0 = Disable; 1 = Enable.

SMI generation for address range A2000h to A27FFh: 0 = Disable; 1 = Enable.

SMI generation for address range A1800h to A1FFFh: 0 = Disable; 1 = Enable.

SMI generation for address range A1000h to A17FFh: 0 = Disable; 1 = Enable.

SMI generation for address range A0800h to A0FFFh: 0 = Disable; 1 = Enable.

SMI generation for address range A0000h to A07FFh: 0 = Disable; 1 = Enable.

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