Table; Table E-2. Mga 2064W Pci C; Table E-3. Standard Vga M; E.4 Programming - Compaq Deskpro 4000 Technical Reference Manual

Appendix E Matrox Millennium II Graphics Card
E.4 PROGRAMMING

E.4.1 CONFIGURATION

The Matrox Millennium-II graphics card works off the AGP bus and is configured through the
MGA 2164W's configuration space registers (listed in Table E-2) using PCI protocol. These
registers are configured by BIOS during POST to the default configuration.
Table E–2. MGA 2064W PCI Configuration Space Registers
PCI Config.
Address Function
00h Vender ID (102Bh)/Device ID (0519h)
04h PCI Command
08h Status
10h Display Memory Base Address
For a discussion of accessing PCI configuration space registers refer to chapter 4. For a detailed
description of registers refer to Matrox documentation for the MGA 2164W controller.

E.4.2 CONTROL

Table D-4 lists the standard VGA control registers of the MGA 2164W. These registers can be
directly accessed by software written for standard VGA modes.
Table E–3. Standard VGA Mode I/O Mapping
I/O
Address
3B5.00..26h*
3BAh
3C1.00..14h*
3C2h
3C5h.00..04h*
--
* Index at base minus 1 (i.e., if base is 3B5h, index is at 3B4h).
E-4 Compaq Personal Computers
MGA 2164W PCI Configuration Space Registers
Standard VGA Mode I/O Mapping
Function
CRT Controller (mono)
VSYNC Control, Display Status
Attribute Controller
Misc. Control / Status
Sequencer
--
Original - September 1997
Table E-2.
PCI Config.
Address Function
14h Relocateable I/O Base Address
30h Expansion ROM Base Address
3Ch Interrupt Line / Interrupt Pin
-- --
Table E-4.
I/O
Address Function
3C6h..3C9h RAMDAC
3CAh Read VSYNC Status
3CCh Misc. Control, Read
3CF.00..08h Graphics Controller
3D5.00..26h* CRT Controller (color)
3DAh VSYNC Control, Display Status (color)