VT8601 datasheet(29/144 Pages) ETC1

Part #	VT8601

Description	Single-Chip Slot-1 / Socket-370 PCI North Bridge With Integrated AGP 2D / 3D Graphics Accelerator and Advanced Memory Controller

PDF	144 Pages

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Manufacturer	ETC1 [List of Unclassifed Manufacturers]

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VT8601 Apollo ProMedia

Revision 1.3 September 8, 1999

-23-

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REGISTERS

The following tables summarize the configuration and I/O

registers of the ProMedia.

These tables also document the

power-on default value (“Default”) and access type (“Acc”)

for each register.

Access type definitions used are RW

(Read/Write), RO (Read/Only), “—” for reserved / used

(essentially the same as RO), and RWC (or just WC) (Read /

Write 1’s to Clear individual bits). Registers indicated as RW

may have some read/only bits that always read back a fixed

value (usually 0 if unused); registers designated as RWC or

WC may have some read-only or read write bits (see

individual register descriptions following these tables for

details).

All offset and default values are shown

hexadecimal unless otherwise indicated.

Table 2. Register Summary

I/O Ports

Port # I/O Port

Default

Acc

PCI / AGP Arbiter Disable

CFB-8 Configuration Address

0000 0000 RW

CFF-C Configuration Data

0000 0000 RW

VT8601 Datasheet(PDF) 29 Page - List of Unclassifed Manufacturers