On 3/17/19 15:36, Chris Hanson wrote: > I recently acquired a DECimage X terminal, which is theoretically a VXT-2000 > with an add-on 2D accelerator. Unfortunately while the terminal is badges as > a DECimage it didn?t include the board, just a frame buffer. >
You may not find any software that can actually use the DECimage board. DEC's strategy for using X terminals for image display was based around the X Imaging Extension (XIE). That was an extension to the X protocol that allowed an application to setup a rendering pipeline (decompress, scale, filter, color adjust, etc) and then "transport" the image into the pipeline. If the X server had an accelerator, then the pipeline might get mapped onto the accelerator hardware. It was almost a win on the underpowered VAX's of the day (especially for decompression). So to take advantage of the accelerator, an application had to make XIElib calls (analogous to Xlib). The libraries (and XIE) were part of the VMS and Ultrix products, but I'm not sure there was anything that used them (maybe some example programs). I don't remember if board for the VXT2000 had any other capabilities that might have helped with normal X server operations. -- Gary
