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</head><BODY BGCOLOR="#F0F0F0" ><div><SPAN style="font-size:10pt;">i can not get the board to run at all it is stuck in a reset</SPAN></div>
<div><SPAN style="font-size:10pt;">if i tie the hault and reset high i still can not get the 9010 to go past the first address</SPAN></div>
<div><SPAN style="font-size:10pt;">something is sending a rest pulsing and the screen just flashes with garbage lines on it</SPAN></div>
<div><SPAN style="font-size:10pt;">i pulled all roms and checked them in a programmer</SPAN></div>
<div><SPAN style="font-size:10pt;">and tried swaping out the proms with ones on a known good board</SPAN></div>
<div><SPAN style="font-size:10pt;">also swapped the cpu board with a know good one so i know the problem is in the cpu board</SPAN></div>
<div><SPAN style="font-size:10pt;">and the video board is good</SPAN></div>
<div><SPAN style="font-size:10pt;">i tried to bug trap all ttl 7400's in the reset circuit and replace any thing i found bad some 74ls116's</SPAN></div>
<div><SPAN style="font-size:10pt;">is this a ram problem ?</SPAN></div>
<div><SPAN style="font-size:10pt;">i am using a afterburner schematic i can not find the outrun one the cpu 1 should be on the outside right ?</SPAN></div>
<div><SPAN style="font-size:10pt;">how can i get the fluke to run to get this fixed</SPAN></div>
<div><SPAN style="font-size:10pt;">thanks</SPAN></div>
<div><SPAN style="font-size:10pt;">tony</SPAN></div>
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Received on Sun Apr 24 18:05:07 2005
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