Chapter 3
69
Interface Boards and Mass-Storage
Drivers
ELSA GLoria AGP Graphics Board
Figure 3-1. ELSA GLoria AGP Graphics Board
Video Memory
The video memory, also known as SGRAM, is a local block of RAM for holding major data
structures: Frame Buffer (double buffer), Z-Buffer and T-Buffer (Texture Buffer). The
Frame Buffer holds one frame steady on the screen while the next one is being processed,
while the Z-buffer stores depth information for each pixel.
Display
connector
Permedia 2A
Graphics
processor
4 MB SO_DIMM
installed memory chips
73
172,1 mm
1 MB SGRAM memory
chips installed on the
graphics board
1 MB SGRAM memory
chips installed on the
graphics board
Содержание X Class 500/550MHz
Страница 6: ...6 Contents ...
Страница 8: ...8 Figures ...
Страница 15: ...15 1 System Overview ...
Страница 66: ...66 Chapter2 System Board Devices on the ISA Bus ...
Страница 96: ...96 Chapter3 Interface Boards and Mass Storage Drivers Connectors and Sockets ...
Страница 134: ...134 Chapter5 Tests and Error Messages Beep Codes ...
Страница 135: ...135 A Regulatory Information and Warranty ...
Страница 146: ...146 AppendixA Regulatory Information and Warranty HP Hardware Warranty ...