On 03/02/2017 08:01, "Christian Corti" <[email protected]> wrote:
> On Thu, 2 Feb 2017, Adrian Graham wrote: >> is fixed 5v. Also you'd expect that sampling at four times the clock speed >> (they'll both do 25Mhz with 6 channels) then every pulse would be picked up. > > No, because the pulse length may be far inferiour to the sample clock > rate. You may also need to capture signal transitions instead of signal > levels (i.e. you record a "pulse" if there was a transition between two > sample clock pulses). Ah yes, sorry, I'm aware of that. What I meant in this specific case is that with 4 2764s right next to each other with a direct signal path between adjacent address and data pins that has a resistance of 0.5 ohms pin to pin surely I should be able to put a clip on each (for example) A4 address line and see the same pulse at all four channels? -- Adrian/Witchy Binary Dinosaurs creator/curator Www.binarydinosaurs.co.uk - the UK's biggest private home computer collection?
