Forum Rules and Etiquette

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286 Parallel Port cdrom no labelling, drivers unknown

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    Yeah, I can stand corrected. I've only used a few parallel port drives.
    The two drives I've installed with Centronix connectors did only had one port.
    I did install another with two DB25 pin connectors.. one for a printer piggy-back.
    But alas, the numeric SCSI ID selector is likely the best answer that's it's SCSI.
    Wanted: Sony CDU-535 or CDU6250 CD-ROM Drive (Caddy drive) for 8-bit Sony Interface Card
    sigpic <-- This is me using my IBM PC 5150 over Ethernet TCP/IP network with assignable drive letters


      before I went and messed with the drivers again I went and checked the cable and the ports on the back, I'm fairly certain that it's a scsi connector on one end and a parallel port on the other, with the parallel port connecting to the back of my PS/2 Model 50
      Tried to take steady pic's to show what I mean

      considering what I know now... would it be easier just to get a scsi add in card and use a scsi to scsi cable for the drive?

      I was thinking about getting one eventually, mostly because I have a 9 drive scsi hdd array which I was thinking about using for extending the storage on the computer.
      Last edited by SpookyZalost; February 20, 2014, 04:28 PM.


        The model 50 does not have onboard SCSI. You're plugging into the parallel port which is NOT SCSI compatible. That other port you see next to it is a 25 pin serial port.
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          that's the cable that came with it, but then I think the person just gave me a random cable to connect it.

          I think I'll get a 16bit MCA bus SCSI controller card with my next paycheck to see if that fixes the problem, I've seen several and they are not that expensive.


            You'd see a lot of older parts with cables like that--they're still SCSI, but employ the old "Apple SCSI" DB25 connector, though the convention wasn't limited to Apple by any means. I've got several SCSI cards with DB25s on them. One or two even have stickers above the connector saying "SCSI". The terrible thing is that the DB25 SCSI on a PC sometimes isn't exactly the same as that on an Apple!

            I suspect that the Commodore Amiga was also complicit in this reprehensible practice of using DB25s for non-datacomm applications, though IBM also promulgated the mess by using them for parallel interface as well.

            At any rate, this is a SCSI cable:

            Just more voodoo to add to the SCSI story. The problem was that the ANSI SCSI committee never formally specified the exact connector to be used.

            To make matters even more confusing, this is a printer cable:

            Last edited by Chuck(G); February 20, 2014, 05:34 PM.
            Reach me: vcfblackhole _at_ protonmail dot com.