hcf

3 definitions found

hcf - Free On-line Dictionary of Computing (26 May 2007) :

  HCF
  
     1. <operating system> Host Command Facility.
  
     2. <architecture> Halt and Catch Fire.
  
     [Jargon File]
  
     (1999-01-24)
  

hcf - Jargon File (4.4.4, 14 Aug 2003) :

  HCF
   /H.C.F/, n.
  
     Mnemonic for `Halt and Catch Fire', any of several undocumented and
     semi-mythical machine instructions with destructive side-effects,
     supposedly included for test purposes on several well-known
     architectures going as far back as the IBM 360. The MC6800
     microprocessor was the first for which an HCF opcode became widely
     known. This instruction caused the processor to toggle a subset of
     the bus lines as rapidly as it could; in some configurations this
     could actually cause lines to burn up. Compare killer poke.
  

hcf - V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006) :

  HCF
         Hybrid Coordination Function (MAC, 802.11a)