On 01/05/02 at 15:02 Phoebus Dokos wrote: >>I have also constructed (ah, the good old days!) a 68020 add-on board... >>I did a lot of guesswork when doing that circuit and more logic would >>have been needed to get it to work right... I would probably make short >>work of it today since now I have a logic analyzer and it would be very >>easy to see what the 8301 actually does - if I had a standard QL handy.
>I volunteer mine :-) You interested? (I will be gone in two weeks and I >have three QLs in Greece so I won't miss it "=_ Well, you are welcome to send it over. No need to have a US one, either. I'll just hook it up to the video in on the PC, and that's multi-standard. I'll have a QL in a window :-) Muahahaha (Mad scientist crazy laugh) >>I also know that Branko B. had overclocked the whole thing... Worked just >>fine, too. >That would be interesting to see... Worked just fine, and appeared to be very stable. Nice picture on monitor at >70Hz refresh :-) Not much heat either, since he only used one bank of 1Mbit RAM (today that would be two chips at most, then it was 8). I've used a 68008FN to expand a QL myself. It was a borad that took up to 3MB of RAM on 30 pin SIP modules. Hm, that reminds me - I may even have a schematic diagram for this somewhere. It was a one-off I did for a friend using perfboard + transformer wire technology :-) Nasta
