Sun Microsystems Sun XVR-200, Installation Manual

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Chapter 1 Sun XVR-200 Graphics Accelerator Overview 3
FIGURE 1-2
shows the Sun XVR-200 graphics accelerator back panel LFH-60 I/O port.
FIGURE 1-2
Sun XVR-200 Graphics Accelerator Back Panel LFH-60 Port
PCI-Express Bus Interface
The Sun XVR-200 graphics accelerator is a low-profile single-slot 32-Mbyte frame
buffer keyed for an x1 PCI-Express bus interface. The output connector is an LFH-60
video port that requires the monitor cable adapters provided in the installation kit
for DVI and HD15 (VGA) type monitor cabling.
8+24 Simultaneous Visuals
The 8+24 mode simultaneously supports 8- and 24-bit visuals. This mode addresses
the classic colormap flashing issue with a 24-bit visual while providing the 8-bit
visual that is required by some legacy 8-bit color only applications.
Cached Pixmaps
All Sun XVR-200 graphics accelerators support off-screen pixmap caching. Cached
pixmaps are those that are stored in the off-screen memory. These off-screen
pixmaps allow faster transfer rates to and from on-screen windows.
The available off-screen memory depends on the amount of video memory, the
current resolution, and depth settings. For example, the Sun XVR-200 graphics
accelerator has 32 Mbytes of video memory.
If the board is running at 1024
×
768 resolution with a depth of 8-bits, 768K is used
for on-screen memory. That leaves 31.2 Mbytes available for pixmaps. In 24-bit and
8+24-bit modes, the on-screen memory that is used is four times larger than what is
used in the 8-bit mode.
LFH-60 video port