Intel 815 Manuel D’Utilisation

Intel

Intel® 815 Chipset: Graphics Controller PRM, Rev 1.0

R

3

Contents

Introduction ................................................................................................................................ 15

Terminology................................................................................................................... 15

Reference Documents .................................................................................................. 16

815 Chipset Overview....................................................................................................... 17

I/O Controller Hub ......................................................................................................... 18

82815 Chipset GMCH Overview.......................................................................... 18

Host Interface.............................................................................................. 19

System Memory Interface ........................................................................... 20

Multiplexed AGP and Display Cache Interface ........................................... 20

Hub Interface............................................................................................... 21

82815 Chipset GMCH Integrated Graphics Support ......................... 21

System Clocking.......................................................................................... 22

GMCH Power Delivery ................................................................................ 22

Three PCI Devices on GMCH ....................................................................................... 22

Multi-Mode Capability Requirements .......................................................... 23

Supported Single Monitor and Multi-monitor Configurations .......... 23

System Startup ............................................................................... 25

Software Start-Up Sequence.......................................................... 26

Switching Device modes ................................................................ 28

System Address Map ................................................................................................................. 29

Memory and I/O Space Registers ................................................................................. 30

GC Register Memory Address Map .............................................................................. 32

VGA and Extended VGA Register Map......................................................................... 36

VGA and Extended VGA I/O and Memory Register Map............................ 37

Indirect VGA and Extended VGA Register Indices ....................................................... 38

Graphics Address Translation..................................................................... 41

Memory Buffers for GC’s Instruction Interface............................................ 42

Graphics Translation Table (GTT) Range Definition.................................................................. 43

Basic Initialization Procedures ................................................................................................... 45

Initialization Sequence................................................................................................... 45

Hardware Detection (Probe).......................................................................................... 45

Frame Buffer Initialization.............................................................................................. 46

Hardware Register Initialization..................................................................................... 47

Color vs. Monochrome Monitors ................................................................. 47

Protect Registers: Locking and Unlocking .................................................. 47

Checking Memory Frequency ..................................................................... 47

Hardware State.............................................................................................................. 47

Saving the Hardware State............................................................................................ 48

Restoring the Hardware State ....................................................................................... 49

Blt Engine Programming ............................................................................................................ 53

BLT Engine Programming Considerations.................................................................... 53

When the Source and Destination Locations Overlap ................................ 53

Basic Graphics Data Considerations............................................................................. 57

Contiguous vs. Discontinuous Graphics Data............................................. 57