(Topic ID: 7260)

ROM burners - anyone got recommendations?

By DrAzzy

12 years ago


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    #79 7 years ago

    Looking even for a webpage with a matrix on it--showing compatible pinball games & EPROMs.
    Anyone have a list of EPROMs (burnable in the GQ-4X) compatible with:

    (Stern Whitestar)
    Lord of the Rings
    Ripley's Believe it or Not!

    (WPC Fliptronics)
    BSD

    (Data East)
    Adventures of Rocky & Bullwinkle

    There's a matrix linked from here, but there are a zillion choices and I don't know how to match pinball machine (MPU) to compatible EPROM.

    How do I go about finding a match (for compatibility's sake) for those games? I assume part numbers from Stern/D.E./Williams don't match current part numbers.

    #81 7 years ago
    Quoted from snakesnsparklers:

    GQ-4X will support all of those games

    What if I don't want to erase the EPROMs currently on the boards, and just want to burn new EPROMs?

    Where do you get them, and how do I figure out the part numbers for those? I assume the part numbers may not match what is in the manual for each game (given that they're all older games).

    #83 7 years ago
    Quoted from Coyote:

    Download the firmware's image file from your favorite pinball site.
    Look at the size of the firmware file.
    Get a chip that holds the data that matches the size of the firmware file.
    https://en.wikipedia.org/wiki/EPROM

    Thanks. There's a matrix of types on that page. Apparently the chip size should be 8 x the size of the rom image file.

    #87 7 years ago
    Quoted from barakandl:

    Here is the chart Coyote is talking about.

    For old EPROMs, you have to pretty much use a 2nd source or gray market product. China makes clones of the smaller EPROMs that no main manufacturer is still producing. They work fine for the most part.
    Another tip.... You can sub larger EPROMs for a smaller one when the pin out matches. Take a 2764 (64Kb) and a 27128 (128Kb). They both are in the same 28 pin package. Yet the 27128 has an extra address line at P26 that is not connected in 2764. That means you can fill up a 27128 with two copies of a 2764 image and use that in its place. So if you don't want to stock 2764, you don't have too. Same goes for 2732 vs 2716 and other larger eproms. A lot of times a 2732 is the same price as 2716, so you dont have to buy both.

    Example of new manufactured Chinese clones. I like to use them (pre erased, clean straight legs, typically work fine, cheap).
    ebay.com link » 50pcs M2732a 2f1 M2732a Eproms St

    Thank you. Just the type of info I was looking for.

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