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Sounds like a video ram problem. If the game board is working then
chances are the 9010 won't help this problem as the video ram is not
always connected to the CPU bus. This can be a timing problem, and if the
pattern is consistent that will be a clue as to what area to check. For
example it could be vertical or horizontal timing.<br>
<br>
John :-#)#<br>
<br>
At 11:29 PM 4/10/2001, you wrote:<br>
<blockquote type=cite class=cite cite><font face="arial" size=2>Anyone
have the memory map for Q*Bert? Or hints on repair.</font><br>
<br>
<font face="arial" size=2>I have a board that has stripes of garbage
interleaved with stripes of good image (both on the background
plain). Haven't been able to really nail down where the background
image is stored using the schematics.</font><br>
<br>
<font face="arial" size=2>Planning to hook it up to my 9010 but haven't
gotten there yet.</font><br>
<br>
<font face="arial" size=2>David</font></blockquote></html>
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Received on Wed Apr 11 00:12:38 2001
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