Still working on increasing the clock speeds :). Just to catch you up, we are double clocking their MMU, and the CPU. So this doubles the data rate to the shifter. A side note is that I'm also working on 32 MHz for the ST FM. I have done this for the STE already, but the ST FM is a lot more problematic. But shifter and MMU will be bottlenecked at double overclock for obvious reasons..Smonson wrote: 29 Oct 2017 11:43 I understand - I know you have been trying very hard in the past to improve the ST's clock speed, and the current shifter just gets in the way of that. It would be great to have a more configurable shifter/MMU combo so that when you're running at 16MHz you could execute a LOAD only every 4th bus cycle instead of every 2nd. Alternatively you could clock the shifter every 2nd cycle, as it is now, and have a 256-colour lo-res video mode, or 4 colour 640x400, etc. I think that's very achievable.
Ultimately again, if we had a new MMU and shifter we can have access to 32 MHz speeds. Resulting in quadruple data rate to the shifter. But of course this is properly going to be some time away.
Extra video modes of of course have been documented somewhere in this thread, so like you say we can have a 256 colour low res, or extra horizontal resolution instead. Of course I was also thinking of other methods of improving the video output without using more bandwidth, and trying to do a basic chunky mode as well.
