earliest graphics display system in your collection?

I'll propose 4 canditates from my collection for having interesting hardware designs : HP1350 Grpahics Translator. It's all random logic, no processor. Strange... PERQ 1 (and all later classic PERQs). It has a graphics processor (the 'rasterop machine') that's integrated with the main CPU. The CPU's data path calculates the memory addresses for individual graphics words, there's a little pipeline that does a read-modify-write on words from memory (fetched in groups of 4, for hardware reasons), said pipeline shifts to align corresponding pixels in source and destination words,combines those bits that are within the area to be changed, and shoves the result back into memory PPL video hard disk. This is a head-per-track Winchester which rotates at video frame rate. RGB video is stored on 3 tracks of thr disk using analogue FM recording. I have a Unibus interface to store an image on this disk I2S image processor/display systems. I will have to dig out the manuals to get the exact architecture, but from what I remember, it has several byteplanes (each 512*512 bytes), the outputs of which go to progammable lookup tables, the output of those go to a multiple-input full adder, the output of that to more lookup tables, and then to the DACs. By suitable programming of the tables you can combine the byteplanes in just about any way you like. Add to that a hardware cursor (controlled by trackball or tablet), a pixel histogramming board, the feedback ALU (planes 0 and 1 are treated as a 16 bit accumulator, you can combine the contents of that with any other plane and write the result back to the accumulator). It's one complicated machines (one of mine has over 3 thousand DRAM chips, and as many TTL devices...) -tony