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  • A600 Users - HELP!

    Hi all,

    If anyone has an A600 (stock), can you help me out with a little something?

    I need to know (as accurately as possible) how much space (in mm) there is from the top of the KS ROM socket on the MB, to the top-shield (without the ROM chip in it).

    The reason I am asking - my new KSRS V2.0 will be a direct insert design, and I need to know if it will fit inside the shield in a stock A600 case. If not, then it would only be able to be used in "towered" A600's I have an A600 MB with bottom shield, but not top-shield

    Thanking you in advance,

    Nathan

    P.S. Details of my KSRS V2.0 project can be found here viewtopic.php?f=24&t=832

  • #2
    Re: A600 Users - HELP!

    I don't have time to measure it, but if this helps, the top of the kickstart rom chip rests against the top shielding. So there isn't much room, just to the top of the kickstart chip when it is plugged in.
    Coming soon - ..
    =====================================
    C= Amiga: A4000T/PPC/060, | A1200 x2 | A600 x2 | A500 & Plus x6 | CD32
    Atari:
    520 STFM | 4160 STE | 2600 Woody || Nintendo: Wii | GCN | N64 + Everdrive | SNES + Everdrive | SNES Mini | GB | GBA | DS-XL
    Sega
    : Dreamcast | Megadrive + Everdrive || Microsoft: Xbox x2 | Xbox 360 Slim 250GB || Sony: PSX | PS2 | PS2slim | PS3 slim | PSP x2 | Vita

    PC:
    i7 4GHz, 32GB Ram, GTX 970, SSD | + many other PCs and Laptops ||Tablet: Samsung Galaxy Tab S6 ||
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    • #3
      Re: A600 Users - HELP!

      @Harrison & all

      Thanks mate, that's what I thought. You don't need to measure it. That means that A600 users would only be able to use my KSRS if the had their A600 MB towered Or, the only other option, I could have holes on the PCB for the optional fitting of a ribbon cable, like my old poopy KSRS V1.0. I'm still using mine on my A500 without problems, and I have even folded the ribbon cable quite harshly

      With the A600 however, the ribbon cable would be dead straight, going from the ROM socket to the left, and out the PCMCIA slot. It would be shorter than my A500 ribbon cable too (about 15-16cm!). It would be only need to be about 11-12cm long for this. If the A600 user had a basically stock machine, with no accelerator or other weird mods, it should be a.o.k. The PCB could also be in a little plastic box (to protect the ROMS from static, or worse!), or just resting on the little nylon legs. Anyones thoughts on this would be greatly appreciated, so I know what design features I should include - so post away! The extra tracks etc though would probably cause issues themselves - i.e. reflections as they would not be terminated? Picking up noise? Maybe I could sink/absorb the signal at the end of them for non A600 users by using suitable resistors to terminate the unused tracks and holes?

      Nathan

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      • #4
        Re: A600 Users - HELP!

        I've got a top-shield and case for my A600 MB on the way to me right now, so I'll be able to give a definitive answer to stock A600 users as to whether the KSRS V1.0 & 2.0 will fit inside the shield.

        Nathan

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        • #5
          Re: A600 Users - HELP!

          But would A600 owners need to have the top shielding in place? If it fits without it then isn't that OK?
          Coming soon - ..
          =====================================
          C= Amiga: A4000T/PPC/060, | A1200 x2 | A600 x2 | A500 & Plus x6 | CD32
          Atari:
          520 STFM | 4160 STE | 2600 Woody || Nintendo: Wii | GCN | N64 + Everdrive | SNES + Everdrive | SNES Mini | GB | GBA | DS-XL
          Sega
          : Dreamcast | Megadrive + Everdrive || Microsoft: Xbox x2 | Xbox 360 Slim 250GB || Sony: PSX | PS2 | PS2slim | PS3 slim | PSP x2 | Vita

          PC:
          i7 4GHz, 32GB Ram, GTX 970, SSD | + many other PCs and Laptops ||Tablet: Samsung Galaxy Tab S6 ||
          Phone: Samsung S20 5G
          Retro Handhelds: Retroid Pocket 2 | Anbernic RG351P

          Comment


          • #6
            Re: A600 Users - HELP!

            @ Harrison

            Both of my KSRS V1.0 & 2.0 fit easily inside the case, if there is no top shield. I probably wont bother getting a top shield, as I don't really need it.

            Nathan

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            • #7
              Re: A600 Users - HELP!

              Top shield isn't really needed, my A600 doesn't have it since it was bought new (rev. 1.5 motherboard, march 1993).

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              • #8
                Re: A600 Users - HELP!

                Even with it off, there is only 6.5mm to the metal back of the keyboard, which (with maximum bad luck) could have a screw-head over the socket. I don't think so, and the screw could be removed, so...

                I don't use the top, and ofc you could make a hole in it (or remove it :P) if one wants your mod. So np I think for most users.
                Hardcore Amiga 500 demo coder. Youtube channel ScoopexUs (Assembler tutorials etc.) More at coppershade.org.

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