Instead of just redisplaying the internal video.. implement a separate display.
1. Get a copy of the ScuzzyGraph driver... (it even supports color)
2. Reverse engineer it figure out the protocol
3. implement it in FPGA (SCSI interface / simple graphics processor / VGA or HDMI out)
4. Profit.
You can find info and more links to the Scuzzygraph on this forum... it used a TI graphics processor which probably wouldn't be terribly hard to reimplement.
I dunno why you would want to redisplay the video already shown on the built in display... for the ammount of effort that would require it seems pretty pointless.
1. Get a copy of the ScuzzyGraph driver... (it even supports color)
2. Reverse engineer it figure out the protocol
3. implement it in FPGA (SCSI interface / simple graphics processor / VGA or HDMI out)
4. Profit.
You can find info and more links to the Scuzzygraph on this forum... it used a TI graphics processor which probably wouldn't be terribly hard to reimplement.
I dunno why you would want to redisplay the video already shown on the built in display... for the ammount of effort that would require it seems pretty pointless.