Hi Georg, Very interesting! I think there could be impact on sounds as well. Tundra semiconductor made a processor capable of 10MHz also. I have not yet played with that. It could be possible to make an adapter that includes a /4 circuit to feed correct clock to the UART, and also the 81C55. This is an interesting idea, worth exploring. Steve
On Wed, Nov 25, 2015 at 9:33 AM, Georg Käter < [email protected]> wrote: > Hello together, > > I did some try out on overclocking the 80C85 in my M100. I was quite > successful using an oszilator > with 7,3728MHz which gives a CPU clock 50% higher than the original one. > My M100 run with this > w/o any issues in running BASIC so far, gain in performance is visible and > amazing. But there is one thing > you might have an solution or even idea how to solve for. TELCOM and any > program communicating via > serial port are not working as PIO 81C55 gets the clock from CPU which is > now 50% above the original > value. > Any comment from you is welcome > > Kind regards > Georg Käter >
