Ive designed and constructed a video board that can RX any 24 bit RGB video source and output two different video resolutions at the same time provided bandwidth isnt nuts. On video outputs, one resolution is 1440x240 and the other would be 1080P. All scaled. Any electrical engineers observing the photo below can see the test points and voltage test positions everywhere.
The goal of the 1440x240 mode would be to use a DAC to get RGBS by embedding CSYNC into the HSYNC data island for my HDMI softcore and use a PVM. Its more of a bonus video mode since the FPGA has enough pins and the additional cost is really just the HDMI connector. I have done this successfully with a DAC outputting RGBHV. The same DAC has severe issues with my 1440x240 in YPbPr mode though.
I want to try to tackle all of the handhelds and then resume my focus on the Nintendo DS to achieve some type of digital video modification for it later. I wanted to try to knockout NGPC, PSP-1000, GBA, Wonderswan and GameGear first. I think I can have NGPC version ready this summer. As Ive constructed the red card, with a daughter board I can basically process anything I hope.
Currently I can do 1440x240 no problem but I will fine tune this more for PVM as I dont like the bezel covering the image. I will need a second board revision to have 1080P working at the same time. The SDRAM bandwidth and SDRAM arbiter/scheduler I made can handle it no problem. Few color issues but I can fix this and plan to shortly.
Ill post any updates here or any breakthroughs. This has been an off and on project Ive done in the background for almost 2 years and has been a very big learning process. But Im optimistic.
