HP XA manual Connectors, Video Memory

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-throughconnector. 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.

56