On Thu, Oct 23, 2025 at 5:18 PM Doc Shipley via cctalk < [email protected]> wrote:
> On 10/22/25 18:04, Mike Katz via cctalk wrote: > > I just purchased an old Gimix computer (now if only I can get it from > > Orlando to Chicago before my friend goes down there for Christmas). > > > > It has an OMTI 20C-1 MFM hard disk controller with a IMI 5018 19MB hard > > disk drive in it. > > > > I am thinking of trying to upgrade the hard drive. The Gimix System > > that I worked on had a half high 20MB drive and a Syquest removable 5MB > > drive. > > > > Does anyone have an old MFM drive laying around (half high or full > > height but larger than 18MB) and/or an MFM removable cartridge drive > > with cartridges? > > Pretty sure Mr Gesswein is on this list but I don't see him post often. > Anyway, he designed a very handy MFM drive emulator: > > https://www.pdp8online.com/mfm/mfm.shtml > > I won't be buying any more MFM drives, and like Jim said, the ones I > have I wouldn't trust enough to ship. With an inexpensive emulator > available that's one piece of history I won't miss at all. > > > Doc > I have two of those MFM emulators for my PDP-11/23+ and PDP-11/23 and they work great. -Peter
