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3 Interface Devices and Mass-Storage Drives
Cirrus 5465 Graphics Controller Chip
Connectors
The Video Electronics Standards Association (VESA) defines a standard
video connector, variously known as the VESA feature connector,
auxiliary connector, or pass-through connector. The graphics controller
supports an input/output VESA feature connector. This connector (whose
pin names are listed in a table on page 71
) is integrated on the system board,
and is connected directly to the pixel data bus and the synchronization
signals.
Video Memory
The HP Kayak Workstation PCs are supplied with 4 MB of video memory
integrated on the system board (revision B). There is either, an on-board
4 MB video memory soldered onto the system board. Or, 2 MB of built-in
video memory (revision A) and a 2 MB video memory module installed in
the video memory upgrade socket, giving 4 MB in total.
The video RAM (also known as the frame buffer) is a local block of 50 ns
EDO DRAM for holding both the on-screen surface (reflecting what is
currently displayed on the screen), and the off-screen surface (video frame,
fonts, double buffer).
The following diagrams show the position of the video memory module on
the minitower and desktop computers.
The soldered video memory (revision B) is located in the same area on the
system board as the video memory module.