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28133Re: [midatlanticretro] Lobo floppy drives

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  • Richard Cini
    Nov 16, 2012
      Bill --

      I finished examining and cleaning the interior of the drive enclosure this evening. I took note of the jumpers on both drives — interestingly there were many differences between the jumper settings, other than what would be expected (i.e., the drive select and the termination).

      Here are the jumper settings:

      Drive0: installed — DS1-T1-X-B-A-Z
      Drive1: installed — T2-HL-800-DS2-T3-T4-T5-T6-T1-X-B-A-Z (this drive is at the end of the cable)

      Drive1 also had a drive_ready modification which resulted in pin22 being put on pin4 of the interface connector (jumper R cut; wire from R to pin 4).

      Given this configuration I'm not entirely sure what system this might have been used in since the drives are set so differently. So, I reset the jumpers per the CompuPro Disk 1 instructions and once I build a cable, I can try it on my IMSAI. Overall the drives look very clean and free from excessive dust.

      Rich Cini
      Collector of Classic Computers
      Build Master and lead engineer, Altair32 Emulator

      From: B Degnan <billdeg@...>
      Reply-To: "midatlanticretro@yahoogroups.com" <midatlanticretro@yahoogroups.com>
      Date: Wednesday, November 14, 2012 9:46 AM
      To: "midatlanticretro@yahoogroups.com" <midatlanticretro@yahoogroups.com>
      Subject: Re: [midatlanticretro] Lobo floppy drives


      Sorry, I mean jumpers on the drives in the enclosure. Here is an



      -------- Original Message --------

      > From: "B. Degnan" <billdeg@...>
      > Sent: Wednesday, November 14, 2012 9:30 AM
      > To: midatlanticretro@yahoogroups.com
      > Subject: Re: [midatlanticretro] Lobo floppy drives
      > It might be a pain, but if you have a chance to take a picture of the
      > jumpers on the board, I'd be interested to see what you have. I just did
      > set of SA800's from an Intel MDS. I expect yours to be completely
      > different.
      > bd

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