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Powertran Cortex

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    Hi All,
    I made the Ebay seller a silly offer yesterday which he accepted and i've paid for, the boards should be with me on Monday.
    But, i think he has more than one set of these boards, his emails to me suggest he might and the auction is still active.

    I always wanted to build a Cortex since it first came out in ETI when i was a kid but i couldn't afford it on pocket money.
    I've left a search running on Ebay for the last couple of years but the complete ones just went for too much money.
    Still got all the ETI magazines with the build articles in.
    I've 100's of tubes of mixed TTL, ROM and RAM chips in the loft so should be ok for those but it will be fun finding all the rarer Texas parts.

    As soon as i have the boards in my hands and know they are useble i'll start a shopping list.
    I think somebody on the list mentioned they had the Powertran documentation that came with the kit, it doesn't seem to be on the FTP site.
    Any chance of an upload ?

    Many thanks,

    Jim Hearne

    Comment


      Update, the seller has confirmed he has more sets of boards (though not exactly how many).
      And a set of Roms, i have asked if they have a version number on incase they are newer than the ones on the FTP site.

      Jim

      Comment


        I considered bidding on this but I doubt if I would be able to get the components, but if he has more on offer, I may end up buying a set anyway.
        I did buy a couple of tms9900 cpus, now I need to find the clock generator.

        Comment


          Originally posted by nige the hippy View Post
          Just seen on EBAY.....

          http://cgi.ebay.co.uk/ws/eBayISAPI.d...=STRK:MEWAX:IT

          set of PCBs.
          So, did somebody here win these ?

          Jim

          Comment


            Does anybody know what date the roms are on ftp://whtech.com/Powertran%20Cortex/ROMs/ ?
            The Ebayer selling the pcb's has a set labeled IC45, 46, 47, dated 10.1.1983

            Thanks,

            Jim

            Comment


              Just got my Cortex PCB's
              I didn't expect them to still be in what must be the original tissue paper from almost 30 years ago.
              I don't want to open them !

              NOS Cortex boards.jpg

              Comment


                Hi Jim,

                Very cool to see them wrapped up like that! You should have bought two sets... BTW, good luck with the build.

                As far as I'm aware, there was only ever one set of ROMs in circulation. They identify as Cortex Basic Rev 1.1 when you power up the computer/emulator. Since the project was published over late 1982/early 1983 period, Jan 10, 1983 sounds about right.

                Comment


                  Originally posted by Jim Hearne View Post
                  So, did somebody here win these ?

                  Jim
                  Not guilty.

                  Comment


                    So i did open them.
                    Heres a scan of the top of the main board, i can do the other side and other boards if people are interested.
                    The original scan is at 600dpi / 7.5 meg

                    Appears to be the same rev as the ETI boards though for some reason it doesn't have an issue number where the ETI drawing shows one.

                    cortex pcb top smaller.jpg

                    Jim

                    Comment


                      Cortex V Cortex 2 differences

                      Hi All,
                      Does anybody know the differences between the Cortex and the Cortex 2
                      Was it just the case or was the system board different as well ?
                      Will a original Cortex pcb fit in a Cortex 2 case ?

                      Thanks,

                      Jim

                      Comment


                        The Cortex 2 was the same board in a different case.

                        Comment


                          Originally posted by mnbvcxz View Post
                          The Cortex 2 was the same board in a different case.
                          I can confirm this. I had/have a 'Cortex 1' (actually two of them) and I built from kit form a Cortex II for my friend back in the day. It was re-boxed to look like a BBC Model A/B. I think it was at the tail end of its market influence so Powertran just tried to jazz it up a little.

                          Comment


                            Originally posted by Jim Hearne View Post
                            So i did open them.
                            Heres a scan of the top of the main board, i can do the other side and other boards if people are interested.
                            The original scan is at 600dpi / 7.5 meg

                            Appears to be the same rev as the ETI boards though for some reason it doesn't have an issue number where the ETI drawing shows one.

                            [ATTACH=CONFIG]6477[/ATTACH]

                            Jim
                            Can you do the other side as well please? It might be useful to have and you are the one who can make it happen!

                            Comment


                              Many thanks for the replys.
                              I'm ok buying the NOS Cortex 2 case i've found then

                              Jim

                              Comment


                                Some pictures of what i've just bought from the same guy selling the PCB's on Ebay.
                                Apart from a few missing TTL and RAM chips it's a complete basic Cortex 2 kit.
                                Who'd have thought a unbuilt kit would turn up after almost 30 years !
                                cortex 1-s.jpgcortex2-s.JPGcortex3-s.JPG

                                Comment

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