Re: sega outrun stuck in reset

From: Phil Mayor <arcadetraders_at_btinternet.com>
Date: Sun Apr 24 2005 - 17:00:14 EDT

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<DIV><FONT face=Arial>Hit setup on the 9010, hit more until you get to 'set trap
active force line' set it to 'no' .. no need to disable WD.</FONT></DIV>
<DIV><FONT face=Arial></FONT>&nbsp;</DIV>
<DIV><FONT face=Arial>Phil.</FONT></DIV>
<DIV><FONT face=Arial></FONT>&nbsp;</DIV>
<DIV><FONT face=Arial></FONT>&nbsp;</DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
  <DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
  <DIV
  style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
  <A title=tony@htbsusa.com href="mailto:tony@htbsusa.com">tony</A> </DIV>
  <DIV style="FONT: 10pt arial"><B>To:</B> <A title=techtoolslist@flippers.com
  href="mailto:techtoolslist@flippers.com">Technical Tools Mail List</A> </DIV>
  <DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, April 24, 2005 7:28
PM</DIV>
  <DIV style="FONT: 10pt arial"><B>Subject:</B> [Techtoolslist] sega outrun
  stuck in reset</DIV>
  <DIV><BR></DIV>
  <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>
  <DIV>&nbsp;</DIV>
  <P>
  <HR>

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Received on Sun Apr 24 18:05:28 2005

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