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Thread: QuikLoader board

  1. #11
    Join Date
    Sep 2016
    Location
    Melbourne, Australia
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    618

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    Quote Originally Posted by wpvrbancic View Post
    I discuss the SCRG QuikLoader in great detail in my DOS 4.1 document found on my website www.applecored.net. I made a simple hardware change using an unused gate in order for the board to respond to slot addresses. And I developed a far superior operating system I call EOS, or EPROM Operating System. An EPROM burner is required to program the EPROMs, such as the SCRG PromGramer. The last generation board can support up to 8 27512 EPROMs. Seriously, I only use 3 27512s on my board for all the tools I need. I believe my EOS loads DOS 4.1 way faster than 3 seconds.
    I'm currently doing a reboot of the quikloader cards. I'm having issues with getting the flash rom to behave correctly to allow writing to it but the prototypes work happily with the flash programmed externally.

    The QLOS is buggy with 27512 images so I'd be keen to see your OS in action.

    quikloader.jpg

  2. #12

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    These things can be tricky with timing. I use a 28C64 that I used on my 6530 adapter. I wrote the data into it on the KIM-1, in place. Looking at the specs, I found that the 6502 was too slow to do block writes. I did it using 'a byte at a time' mode, rather than the block mode. This worked fine.
    Dwight

  3. #13
    Join Date
    Sep 2016
    Location
    Melbourne, Australia
    Posts
    618

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    At the moment the flash is not going into command mode so we cant even get a chip ID from it. So something about the write cycle timing it doesnt like.

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