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What is this? Post Photos of Mystery Items Here (vintage computers only)

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    Originally posted by Chuck(G) View Post
    I'm not sure that it's a computer at all. It looks a bit small and has nothing but an edge connector; not even so much as a "reset" button. It'll be interesting to see if it's anything more than a power supply.
    I think you are correct. I think it is the electronics box for Micro Computer Devices Selecterm system (on page 31): https://www.thecomputerarchive.com/K...9%20Medium.pdf

    Comment


      Originally posted by falter View Post
      I think you are correct. I think it is the electronics box for Micro Computer Devices Selecterm system (on page 31): https://www.thecomputerarchive.com/K...9%20Medium.pdf
      It may be similar to the main unit in the ESCON Model E-P kit that converts an IBM Selectric to a parallel printer. It may have similar electronics like the main interface shown here: http://vintagecomputer.ca/escon-selectric-kit/
      Maintainer of http://vintagecomputer.ca

      Comment


        I think falter's hit it right on the nose--the model number even matches. Here's the most detailed description that I could find from 1978 Kilobaud. (PDF Page 15). Looks like most of the smarts were in the Selectric base unit.

        Comment


          It’s in a box marked SASI-HDC.

          94511ECF-544D-434D-82B7-EF58571C2F1A.jpeg

          Googling SASI suggests it was a predecessor for SCSI. What would this card be for?

          Comment


            Originally posted by jafir View Post
            It’s in a box marked SASI-HDC.

            [ATTACH=CONFIG]65947[/ATTACH]

            Googling SASI suggests it was a predecessor for SCSI. What would this card be for?
            it is an early OMTI Model 2001
            MFM to SASI controller
            Last edited by Al Kossow; January 18, 2021, 07:18 PM.

            Comment


              Looks like a ST-506 to sasi board. I think I used to have one, but I don't remember out of what.. Might have been a eagle computer?

              edit.. (I should refresh my browser before answering.. I left this one open for awhile..)
              Last edited by dabone; January 18, 2021, 08:04 PM.

              Comment


                Originally posted by jafir View Post
                Itís in a box marked SASI-HDC.

                [ATTACH=CONFIG]65947[/ATTACH]

                Googling SASI suggests it was a predecessor for SCSI. What would this card be for?
                SASI is basically SCSI before it was formally standardized. I used to use one of these with my Atari ST to connect an old 60Mb MFM drive to the Atari.

                I believe that the original concept of SCSI was that you would have controller boards like this on the SCSI bus managing multiple drives. Usually this type of board could control two MFM drives which is why SCSI has LUNs.
                Dave
                G4UGM

                Looking for Analog Computers, Drum Plotters, and Graphics Terminals

                Comment


                  SCSI is supposed to be a "universal" bus, where more than one controller as well as devices can share the bus. In addition, there are some devices that can talk to other devices (mostly found in SCSI tape drives) without the intervention of the controller. The ideal is that as long as devices conform to the SCSI spec, specialized drivers aren't necessary. For example, most SCSI tape drives can be driven with the same basic command set. Similarly, tape auto-feed robots can be anything from a 4 tape QIC cartridge feed to one of those tape library robots that roam racks of tapes picking and sticking.

                  Although few consumer-level SCSI controllers support it natively, there is a define protocol for controller-to-controller communication.

                  It's also encapsulated in much of the current USB technology, such that, if I have a USB mass-storage device (MSC), it has to support the SCSI command set usually used for disks, even though the "disk" may be nothing more than a SD card stuck in a cheap USB reader. Same for ATAPI devices--it's basically packetized SCSI communicated via an ATA command.

                  Comment


                    I've also got a couple of SMS RLL-to-Mac SCSI boards. At one time, there was a substantial price premium on SCSI over ST506-interface drives, so it made sense to have a "go-between" board to interface cheaper ST506 drives to Mac. I used one of those boards with a separate board of "glue" to make the transition between SCSI and ACSI on an Atari ST. Worked fine. I've also got an Ampex SASI-interface board (full length ISA) that interfaced to a hard disk+tape box.

                    Comment


                      Very interesting. Thanks to everyone that answered.

                      Well I doubt I’ll ever own anything that needs this so I’m going to pass it along to someone that expressed interest in it.

                      Comment


                        Got to this thread after searching for ultra 160 scsi hard drive, actually I was searching for sata hdd and just stumbled upon a category of ultra 160 scsi hdd here. I haven't head about this before, are they still used, the storage doesn't seem to be high as compared to what i have seen in the sata hdd.

                        Comment


                          Ultra 160 or ultra 320 is usually server stuff, with SCA to allow for easier hot swapping. Are they still used? Sure, but not by anything current. There are lots of legacy servers out there in production. Most companies switched to SAS or SATA over 10 years ago. For example 8th gen Dell poweredge (2850, etc) had SCA scsi. 9th gen (2950, etc) had SAS/SATA.

                          Comment


                            I was looking at some Urbexing forums and came across this system, which I presume is a typesetter.

                            1796092_5b7178d47a72688ee33b6a82d7f5fa8e.jpg
                            https://www.28dayslater.co.uk/thread...h-2021.127735/

                            Anyone know what it might be?
                            The building is due to be demolished, so if anyone wants it the clock is ticking.
                            I don't have room for it but would pull the Shugart 800s if no one takes it...
                            Wanted: PDP-8/f panel, 16 Sector RK05 packs, VT100, Altair 8800 CPU card, KD11-A, KE8E (M8340 M8341), memory for 11/40.
                            Available for trade: AlphaStation DS10, DS15, IBM 5150, XT, Intel MDS 230, MOS KIM-1, Many PC parts from the 5150 era onwards, DEC Storageworks HDDs, misc DIP ICs, OMNIBUS/UNIBUS/QBUS cards, 6502/8080/85/86/88/Z80 CPUs, Misc radio valves (vacuum tubes), C64, Amiga 1200, Sinclair ZX Spectrum/+/QL.

                            Comment


                              Could be a phototypesetter; definite resemblance to a CompSet system, but hard to say.

                              There's some magnificent old photo equipment there!

                              Comment


                                Originally posted by TJ_Mossman View Post
                                I was looking at some Urbexing forums and came across this system, which I presume is a typesetter.

                                [ATTACH=CONFIG]67150[/ATTACH]
                                https://www.28dayslater.co.uk/thread...h-2021.127735/

                                Anyone know what it might be?
                                The building is due to be demolished, so if anyone wants it the clock is ticking.
                                I don't have room for it but would pull the Shugart 800s if no one takes it...
                                Looks interesting. Lots of cards and a terminal, but could be most anything...
                                Dave
                                G4UGM

                                Looking for Analog Computers, Drum Plotters, and Graphics Terminals

                                Comment

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