> > However, I had already experimented with a 2Mhz PET version (clocking my > selfbuilt computer with a Fat40 ROM at 2MHz) but it did not work (even > though I modified the timeout values). > > It could be a problem in the clock domain crossing from the CPU to the > 6522 VIA. Is it a single clock divided /8 or is it multiple clocks? > Also, are the setup and hold times preserved when crossing this boundary? This should not be a problem, the computer I tried this on was completely running on 2MHz with all 2MHz capable parts. As I said this was my selfbuilt PET replica. André -- Jetzt kostenlos herunterladen: Internet Explorer 8 und Mozilla Firefox 3.5 - sicherer, schneller und einfacher! http://portal.gmx.net/de/go/chbrowser Message was sent through the cbm-hackers mailing listReceived on 2010-01-03 19:00:29
Archive generated by hypermail 2.2.0.