Hi Adam,

You can post it to the list if you wish, others may be interested...

Thanks!

John :-#)#

On 01/28/2015 5:19 PM, Adam Courchesne wrote:

I have this. I'll send it to you when I get home.

On Jan 28, 2015 8:07 PM, "John Robertson" <jrr@flippers.com <mailto:jrr@flippers.com>> wrote:

    I'm hoping one of you code jockeys knows a simple program for
    filling a block of memory on the 9010 - in this case with FFs.

    I'm looking for something like:

    *Begin at address xxxxh write FFh, **
    **
    **Increment counter by 1 store, **
    **
    **Compare counter with yyyyh - if equal goto Finish**
    **
    **Loop back to Begin**
    **
    **Finish*

    I think I just about wrote the program, but it would take me up to
    a couple of hours to get it to work (I'm a heck of a lot better on
    hardware).

    Why do I want this? Well, I am finding that the AnyPin device we
    sell is loaded with 00s, and the early Williams games don't seem
    to like that, so I want to load them with FFs and see if that
    works better. A 5101 is only 4 bits wide, so I made a simple
    adapter that puts a second 5101 in parallel (address and selects)
    with the original and the four additional data lines (D4 - D7) go
    to a Glomper clip that fits over a handy ROM to get those
    connections. Now I can test the 5101 in the game using the
    standard built in RAM tests.

    Thanks!

    John :-#)#

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