> HI All... > > Some speed trials: [showing off delted :] > Basically, see it at the show... and remember: the release version should > run at 18Mhz (if you go for the cheapo one).
I asume that you can turn it off?! > > Interesting facts found out during development: > > 1) NMOS Z80's output 0 when you do ED 71 (the undocumented OUT (C),0 > instruction) > 2) CMOS Z80's output &FF when you do the same... good way of determining > what type you're using? Well, if it is undocumented you never know what the future brings. But my guess is that you get the result you get because the NMOS probably 'pulls' the databus up, whilce CMOS 'pulls' it down in order to make something readable. The instruction does not actually generate anything. > 3) Z380's ... well... that'd be telling... What about ARM? :) > 4) The ASIC seems to be able to manage asynchronous IOs perfectly well... > which is surprising to say the least. Does Brucey know about this? -Frode
