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  1. Path: felix.teclink.net!usenet
  2. From: rad@teclink.net (rad)
  3. Newsgroups: comp.sys.amiga.hardware
  4. Subject: Re: CV64 and CGX questions
  5. Date: 14 Jan 1996 17:10:56 GMT
  6. Organization: TECLink Internet Services: info@TECLink.Net
  7. Message-ID: <1098.6587T638T2386@teclink.net>
  8. References: <96008.115933LEEK@QUCDN.QueensU.CA>
  9. NNTP-Posting-Host: tc1_46.teclink.net
  10. X-Newsreader: THOR 2.22 (Amiga;TCP/IP) *UNREGISTERED*
  11.  
  12. >In article <4cr8lu$fv2@newsstand.cit.cornell.edu>, fkrj@crux4.cit.cornell.edu
  13. >(Benjamin Kenobi) says:
  14. >>
  15. >>I've heard about replacing this chip, I think its the bus driver chip.
  16. >>Actually you probably meant replace the 74FCT240 with the 74FCT244.
  17. >                                           ^^^---------------^^^
  18.  
  19. >I don't have my TTL databook with me, but isn't the 240 an inverting
  20. >buffer vs 244 non-inverting buffer ?  I found that kind of odd.  It
  21. >might make more sense to me to solve you problem by changing the TTL
  22. >family (ie timing) instead of functionality.
  23.  
  24. You are correct.  The 240 is inverting while the 244 is non-inverting.  Does
  25. anyone know where this is connected?  The data bus?
  26.  
  27. ------------------------------------------------------------------------------
  28. - Richard Deken                      E-Mail (personal)     rad@teclink.net   -
  29. - VLSI design engineer                      (AuE business) rad@aue.com       -
  30. - Advanced Microelectronics          PGP public key available.               -
  31. ------------------------------------------------------------------------------
  32.  
  33.