Re: Trouble with WG6100

If the AVG Controller had some bad address counters around the region of the master
character lookup table or even troughout the range of the text subroutines, then it could
be the problem still. I always swap this chip out first just because it is indeed socketed
and can cause lots of strange symptoms. It is just a nice time saver to make sure it is
not the problem first. Plus, these chips seem to be dying more lately.

Jon Raiford wrote:
>
> At 11:24 AM 4/10/2000 -0500, I wrote:
> >Also, I loaded Jess' Vector ROM Viewer program
> >and found the text to be in the Vector ROM
> >136010-x10 at location L7. I would concentrate
> >my efforts around this chip if I were you.
>
> Now I don't know what to believe.. The ReadMe file in my ROM dump said this:
>
> Vector ROM
> R7 136017.110 4K 2532
> N/P7 136017.109 "
> M/N7 136017.108 "
> L7 136017.107 2K 2716
>
> Since I found the text in the file 136017.110, does that mean it really is the one in R7? Even though the schematics clearly shows L7 to be 136010-x10? I have no clue since I don't have a board in front of me. One thing I did notice though was that the text starts at around location 3084, and that the diagonal cross hatch pattern came after it. Try going into test mode and make your way to the diagonal cross hatch and see if it displays. I'm guessing it won't.
>
> Jon
>
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Received on Mon Apr 10 15:18:35 2000