[Fwd: [BBC-Micro] UK Vintage Computer Festival 2010]

Jules Richardson wrote: Yeah, I've heard the rumours. In any case, once there's a little more info released, I'll look into booking a day (or a weekend) off work to go. Should be interesting... If I can get the disc analyser finished for then, I might look into getting a bench and showing it off (assuming it doesn't fall foul of the "no PCs or related hardware!" rule). I've actually finished the preliminary schematic for the disc analyser (which one of my friends suggested I call "DiscFerret" as a subtle jab at the Catweasel). I've swapped out the microcontroller for a newer, cheaper part -- to get the full 12MIPS out of the 18F4550 you have to run it at 5V, which means a 16-bit level-translator is needed to make it talk to the FPGA. Using a PIC18F87J50 means I can scrap the translator and run the whole thing off 3.3V. I can also tidy up some of the FPGA logic to use 8-bit register addressing (the J50 has 8-bit addressing on the muxed parallel port, the 4550 uses 4-bit addressing). I'm going to shut up now, I'm giving far too much away... :) -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/