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Powertran Cortex

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    Don't worry, I just stuck a reserve bid on it just incase nobody else did, I have a spare (which Stuart is welcome to borrow) so I don't need it.

    Jim

    Comment


      So that's three of us who have supposedly bid, but only two bids showing? I assumed it was me who outbid Jim H.

      S.

      Comment


        Someone beat me to it in the last few seconds. ;-(

        Stuart.

        Comment


          Hi all

          I am going to put my CORTEX up for grabs

          I got it down from the loft and had a play with it for a while, but I really don't have the time nowadays to relearn what I have forgotten since I last used it properly.
          So my options are to either put it back in the loft, sell it on ebay or offer it to you lot.
          It is I think a mk 1 cortex with a home made disk floppy disk controller (no disk drive). I do have the M-dex disks and manual and the cortex manual, also a Phillips tv with RGB input that can go with it. It works but the video is a little unstable and it seems to need to be rebooted several times before it starts

          So come on chaps (I guess you are all chaps) let's get a debate going- who needs it the most and can give it a good home?

          Once we can decide who has the best case either it can be collected from Croydon (South London) or I will put it in a box for a courier to collect at your own cost.

          I'll keep an eye on this thread, and feel free to send me a message if you're interested.

          Norvin

          Comment


            Hi all

            I am going to put my CORTEX up for grabs

            I got it down from the loft and had a play with it for a while, but I really don't have the time nowadays to relearn what I have forgotten since I last used it properly.
            So my options are to either put it back in the loft, sell it on ebay or offer it to you lot.
            It is I think a mk 1 cortex with a home made disk floppy disk controller (no disk drive). I do have the M-dex disks and manual and the cortex manual, also a Phillips tv with RGB input that can go with it. It works but the video is a little unstable and it seems to need to be rebooted several times before it starts

            So come on chaps (I guess you are all chaps) let's get a debate going- who needs it the most and can give it a good home?

            Once we can decide who has the best case either it can be collected from Croydon (South London) or I will put it in a box for a courier to collect at your own cost.

            I'll keep an eye on this thread, and feel free to send me a message if you're interested.

            Norvin

            Comment


              Hi Norvin,

              What's the "home made floppy disk controller"? Is that the W2797 mounted on the daughterboard?

              Stuart.

              Comment


                Hi Stuart

                I am very rusty on this, I have had a look and I got it wrong.
                The floppy controller is the on board cortex one, the home made board is a Centronics port.
                I used an external floppy drive with it that I no longer have.

                Can I post pictures on this site ?

                Norvin

                Comment


                  Stuart--you should nab this one, as it will give you one with an original keyboard! I don't suspect he'll be willing to send it to this side of the pond, which puts me out of it.
                  Enter My Mind At Your Own Risk!

                  Comment


                    Originally posted by Ksarul View Post
                    Stuart--you should nab this one, as it will give you one with an original keyboard! I don't suspect he'll be willing to send it to this side of the pond, which puts me out of it.
                    Well Cortexes for me have become a bit like buses - you wait 20 years for one to come along, and then ...

                    I've currently got the MPE Mk1 with the 9909 and disk drives from a BBC micro. I'm happy to pass this on to someone who will make use of it (rather than a 'collector'). I've also got my system built up from the bare motherboard, plus the spare standalone Cortex keyboard to use with it from the MPE 'industrial' Cortex. This one actually better suits the space I have available in my 'hobby corner'.

                    If Norvin doesn't get any replies, perhaps he'll be happy for me to spread the word a little wider on the other TI forums.

                    Comment


                      Originally posted by Ksarul View Post
                      I don't suspect he'll be willing to send it to this side of the pond, which puts me out of it.
                      If there is interest from your side of the pond, I'm sure that between us we could arrange shipping, if Norvin didn't want the hassle. I'm not too far from Norvin and would be happy to pick it up if needed.

                      Comment


                        Only just come across this thread, the Forum decided not to tell me there were any updates, or it ended up in my spam.

                        Originally posted by Stuart View Post
                        If there is interest from your side of the pond, I'm sure that between us we could arrange shipping, if Norvin didn't want the hassle. I'm not too far from Norvin and would be happy to pick it up if needed.

                        I've also got enough Cortex based computers at the moment, the Mk2, the PP95 and at the work the M9900.
                        Much as I'd prefer the all in one Mk1 Cortex case.

                        I'm also happy to send this out to Jim (Ksarul) at cost if it's a pain for Stuart, and am even closer to Norvin than Stuart.
                        Drives aren't a great problem, DSDD BBC ones work fine, they are often on Ebay now me and Stuart have stopped buying them all !

                        Jim

                        Comment


                          Cortex Update.

                          My Cortex is now fully populated, every socket filled.

                          IMG_1966.jpg

                          I've fitted all the E-bus parts and my replacement for the 74LS2001.

                          The 9929 is currently replaced with the F18A replacement so I can drive the little VGA monitor you can see in the picture, works very well.

                          I made a single slot E-bus "motherboard" using a couple of IDC connectors on some 64 way ribbon cable.

                          The E-bus works on the MPE/ETI Parallel printer/Joystick card.
                          I'm now trying to get it to work with the MPE DRAM-E expansion memory card from the PP95, it may well be working but i'm having to learn more about the memory mapper at the same time.
                          And then the MPE FD/WD hard disc card, again from the PP95, though, I also have a blank PCB for this board which I'll build up and implement the mods somewhat tidier than MPE did !

                          I've got a couple of old PC MFM hard drives which i'm going to try and get running on the Cortex to the stage where I can image the contents of the drive off to a PC.
                          Then hook up the hard drive from the PP95 and hopefully create an image of that.
                          The PP95 drive makes a right racket when it spins up (I've only done it once to make sure it did spin up) but it did get up to speed so i'm hopeful it will be readable.

                          I've scanned in some more documentation which i'll update on the site http://www.quantums.info/cortex/.

                          Jim
                          Last edited by Jim Hearne; November 11, 2013, 05:41 AM.

                          Comment


                            Originally posted by Norv View Post
                            Hi Stuart

                            I am very rusty on this, I have had a look and I got it wrong.
                            The floppy controller is the on board cortex one, the home made board is a Centronics port.
                            I used an external floppy drive with it that I no longer have.

                            Can I post pictures on this site ?

                            Norvin
                            If you don't want it to go to somebody whose just going to resell it on Ebay you could donate it to one of the UK computer museums, Bletchley Park or Cambridge.
                            ADDED [ In no way did I intend to mean that anybody mentioned on this list was likely to do this, reading it this morning I think it could have been misunderstood.]
                            As far as I know neither have a Cortex.

                            You can post pictures on the site, just click on the insert image button above.

                            Do you have any documentation or software we may not have ?

                            Many thanks,

                            Jim
                            Last edited by Jim Hearne; November 12, 2013, 12:42 AM. Reason: Clairification

                            Comment


                              Norv,

                              PM sent.

                              Stuart.


                              Originally posted by Norv View Post
                              Hi Stuart

                              I am very rusty on this, I have had a look and I got it wrong.
                              The floppy controller is the on board cortex one, the home made board is a Centronics port.
                              I used an external floppy drive with it that I no longer have.

                              Can I post pictures on this site ?

                              Norvin

                              Comment


                                Looks good Jim. I wonder how many original systems got that far advanced?

                                Comment

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