From: sometomtom@tomtom.com   
      
   I ended up finding that I couldn't run the diag on this particular computer   
   with the ST 2MB RAM expansion board.  If I had the board remove the   
   diagnostic software would run.  Quite weird.   
      
   Glenn   
      
      
   "Tom Tom"  wrote in message   
   news:yBnIk.487$r_3.74@nwrddc02.gnilink.net...   
   > Anyone here know why a the TT030 diagnostic cart would refuse to boot up   
   > when a 2MB ST RAM expansion board is plugged in?   
   >   
   > I have a TT030 that I'm looking at.  When I first was working on it the   
   > machine would just turn on with a grey screen (no Atari logo and memtest   
   > bootup).  I eventually found that there was some corrosion built up on the   
   > two FUNNEL chips in the machine.  After that the machine would   
   > successfully boot.   
   >   
   > Then I tried using the diagnostic hardware to put the machine thru an   
   > overnight test to test it.  But I could never get the machine to boot up   
   > with the diagnostic cart but it would boot up with the Terminal Emulator   
   > cart.  I had installed a TT RAM expansion board and a ST RAM expansion   
   > board so that the testing would exercise the expansion slots.  It wasn't   
   > until yesterday that I discovered this weird issue with the expansion   
   > board.   
   >   
   > I believe the machine was converted from a UK model (ROMs replaced with US   
   > verison of TOS).  I'm wondering if there is anything else that would've   
   > needed replacement/upgrade when converting from a UK model to a US model?   
   >   
   > Regards,   
   > Glenn   
   >   
      
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