Hello, ED> I like the idea of hacking a real D9090 .. It's not like my efforts ED> will be easy to share since so few people have these drives. RB> You, Hervé and me makes three already :) How difficult would it be to make a D90X0 replica? Mostly I'm thinking about the DOS and SASI boards. I realize there are a lot of chips, many undocumented as mentioned before. I'm not entirely sure what the point would be, in particular if MFM hard drives are getting rare to find and few still work. Do there exist any interfaces from ST-412/506 to e.g. CF/SD/whatever? Since those drives were used in many PCs and so on, there should exist a market. Well, I'm just trying to come up with a way to have more people join in on the fun, if you base your hacking on the 9000 series HDDs rather than making a completely new design. If everyone are sitting with the same kind of DOS board we have something in common. Regarding the question how common those hard drives were, I can chime in this was the total inventory from the storage of a former Commodore/PET dealer and serviceman: * About 40 mixed IEEE dual floppy drives (3040, 4040, 8050, 8250, 8250LP) * About 15-20 mixed PETs (2001N, 3032, 4032, 8032, 8032-SK, 8296D) * About 10 mixed B-series (610, 710/720, B500) * About 4-5 loose VIC-20s, complete or in parts * About 2-3 boxed C64C's, plus loose parts * Two or three 2031's (none LP) * Four D90X0 hard drives (two working, of which one with a ST-225) * Lots of other random stuff, loose boards etc Notice I didn't find a single 1541 or better IEC drive, so clearly the focus once had been on PET customers. I do realize this distribution is probably not representative for the real world, that you would find one 9000 series hard drive for every ten floppy drives you come across, or even less likely one HDD for every fifth PET. Most of the goodies listed have been traded away, so now there is mostly parts, broken drives and other leftovers. Best regards -- Anders Carlsson Message was sent through the cbm-hackers mailing listReceived on 2009-04-28 11:35:37
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