XPost: uk.d-i-y, alt.home.repair, uk.legal   
   From: a@harrym1byt.plus.com   
      
   rbowman wrote :   
   > Osborne came out with a 100 column conversion for the Osborne 1. CMOS was a   
   > new technology and while it normally saved power, dissipation increased with   
   > frequency. The circuit would work until the chip got hot. I replace it with   
   > the equivalent LS part and all was good.   
      
   The BBC computer had a similar problem - the early versions had to have   
   an heatsink on a certain chip to keep it cool, I half remember. I also   
   had a timing issue with an S100 computer I built and partially   
   designed. I finally spotted the issue, when I could afford to buy a   
   'scope, but by then it was too late - my homebuilt was due for   
   replacement with something better.   
      
   I think now that designer have simply become more skilled and obviously   
   the range of components have improved massively.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)