Re: broekn double hires

[nathan@visi.com (Nathan Mates)]

In article <52gve5$jl5$1@mhafn.production.compuserve.com>,
100041.1464  <100041.1464@CompuServe.COM> wrote:
>How to repair my Platinum //e. Last week the double hires graphics 
>was ok.
>Now it's broken, it seems that only every second pixel is painted.

   Every other pixel, or every other block of _7_ pixels? (Sorta like
cutting a piece of paper vertically and discarding every other
strip). Double Hires does display every block of 7 pixels out of
different 64K blocks of memory, so the fault may be there. Also,
there's supposed to be a jumper on the 80-column card to enable
double hires-- is that in place?

>The 80col/64kb card is working, I've tested it with a second //e.

   What did you check? Just the ram, or displaying double hires on the
second machine? If double hires worked with the extended 80 column
card in the second //e, then there's a good chance that the first
//e's motherboard s at fault-- press down with your thumb on socketed
chips to see if any have worked their way partway out.

   If the card in the second //e doesn't display double hires,
then the card (and/or the jumper on it) is most likely at fault.

Nathan Mates
--
<*> Nathan Mates http://www.visi.com/~nathan/      <*>
# What are the facts? Again and again and again-- what are the _facts_?
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