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I'm looking for help identifying contributors to the Horizon ramdisk hardware (not software) for some documentation purposes. Here's what I think I know: Ron Gries did the original HRDs, Bud Mills laid out the HRD2000, HRD3000, HRD3000B, and HRD4000 (?), Ron Walters may have designed the PHOENIX mod (?), Gary Bowser may have designed the RAMBO mod (? and the circuitry that "unhides" the upper 2K of ROS or was that someone else?), John Guion may have designed the 32K expansion mod (?), and I've also seen mention of Dave Romer, John Culow and the 99'er users group? Please correct any/all of this if you know the history and certainly if I'm missing someone.
Hi All, Looking for help - bought a HRD off eBay. It only reports 182K, gets errors on the memtest, however it loads the DSR OK and seems to function as it should. (have not tested for corrupt files) In any event - I suspect some of the jumper wiring might have come off over the years and need some assistance. Anyone have a build manual? Anyone have this card??? http://www.tyde.net/2.jpg If you have it - can you look at the expansion jack pad and tell me if yours looks like mine??? http://www.tyde.net/1.jpg In general, it's a clean looking card that appears to have suffered no electrical (visible) or physical damage. I'd love to put it back into service (I run a pretty big 35 year old database on my TI99). Is there anyone out there with the skills and time to take a shot at fixing it? (it's beyond my skills to do a component level debug - though I could probably fix anything if I knew what to do). Any assist would be very much appreciated... Cheers, Arthur...