From: gangprobing.alien@ntlworld.com   
      
   "Computer Nerd Kev"  wrote in message   
   news:XnsA22ED8DB8ED7BCSKJHNMW985780A@94.75.214.90...   
   > Thanks for the warning, but at the very least the transistor   
   > will amplify the current, so I'll be able to keep well below   
   > those TTL current limits.   
   >   
   > I actually am using standard 74164s not LS or any other   
   > derivative as that's what I have to hand.   
      
   If the logic was extremely simple you might get away with diode connected   
   "wired-or", but it sounds like you need to be using tri-stateable bus   
   buffers.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)