Features:
- (2) Independent 64-Bit Graphics Accelerators
- (4) MB Display Memory Per Channel
- Supports Displays up to 1280 X 1024 at 8,16, or 24 Bits/Pixel
The Rastegraf VFG-M Dual High Resolution Graphics Controller with Dual Video Digitizers and 2-Port USB Controller is a single PMC video input and graphics
display controller for VMEbus and CompactPCI computers.
The VFG-M features Two independent 50 MHz Cirrus Logic CLGD7555s, which each include a 64-bit BitBLT engine, 64-bit memory
interface, and 64-bit data paths, BitBLT setup register double buffering
with auto start, transparent BitBLT (source color key), memory-mapped
I/O, and programmable video timing. Multiple apertures in the 7555
enable interleaved graphics and video data blocks. VGA Compatibility is
included. The maximum supported frequencies are 135 MHz for the pixel
clock and 100 MHz for the memory clock.
The 4 MB DRAM display memory is 64-bits/word, byte addressable, no wait state and gives three pages of 1280 x 1024 using 8-bit pixels, 1.5
pages using 16-bit pixels, or one page using packed 24 bpp mode.
A 64 KB EEPROM on Channel A is normally loaded with VGA BIOS or
SPARC Fcode. A 2Kb Serial EEPROM (controlled by PCI2031 PIO bits)
stores PCI2031 power-up, and Rastergraf and customer codes.
Display Output Features include an integral color lookup table (RAMDAC)
with a 24-bit true-color palette and 8-bit DACs with support for
gamma/color adjustment in High and True-Color modes. Integrated color
space converter for 4:2:2 YCrCb to RGB 8:8:8. Hardware destination
color and chroma-key support (hardware occlusion). Video format support
for 24 and 16-bpp RGB and 4:2:2 YCrCb. The RAMDAC has a 64 x 64 x
2 bitmap cursor. A color key can be used to switch the CLUT from passing the RGB components straight through to sampling the pixel to the
color map, thus providing a mapped overlay value. Scroll on single line
(smooth scroll) and pan anywhere on 8 pixel boundaries are supported
The 7555 supports analog displays on 5 Wire (RGBHV) output up to
1280 x 1024 x 24 bpp. Composite sync on green is not manufactured.
The VFG-M Rastergraf Dual High Resolution Graphics Controller may still be available for purchase and support from Artisan Technology Group beyond End-Of-Life (EOL) by the manufacturer (OEM).
Artisan Scientific Corporation dba Artisan Technology Group is not affiliated with or a distributor for Rastergraf. The depiction, description, or sale of products featuring names, trademarks, brands, and logos is for identification and/or reference purposes only and does not indicate any affiliation with or authorization by any rights holder.