>>>>> "David" == David  <David@ixibbs.iximd.com> writes:

  David> So let me see here, does that mean that ISA is a machine Dependent bus.

Every bus is machine dependent.  Often some code can be shared if
there exists implementations of the bus for multiple machine
architectures, though.  So much of the PCI bus implementation is
machine independent for example.  But there must always be some
machine dependent code to handle the mapping to the actual bus
hardware (typically by allocating memory access tags and interrupts).


  // Marcus