Re: Fixed point Vs Floating point



On Jun 17, 11:42 pm, JosephKK <quiettechb...@xxxxxxxxx> wrote:
For the x86 series the FPU was brought onboard with the 486, and with
the 68020 in that series.

Alas, not the 68020, nor the 68030; it was the MC68040
that sported onboard floating point (the hardware support
for floating point on the '020 and '030 was in the form of
coprocessor compatibility).

The floating point unit was omitted on the MC68LC040,
so there were Macintoshes where a 'floating point unit'
upgrade consisted of replacing one '040 CPU with
another, more expensive one.
.



Relevant Pages

  • Re: Which laptop to buy?
    ... >> or my IBM? ... > Alas, I don't. ... There are some experimental ones floating around inside Sun, ...
    (comp.unix.solaris)
  • Re: Fixed point Vs Floating point
    ... Alas, not the 68020, nor the 68030; ... that sported onboard floating point (the hardware support ...
    (sci.electronics.design)
  • Re: Decimal Floating Point (was Re: why still use C?)
    ... >You also get the best possible approximation to the 'ideal' result if you ... >only thing that hardware support gets you is faster computations for those ... Let us remove all floating point from the ... >for decimal floating point in order to get the faster computations. ...
    (comp.lang.c)
  • Re: Packed decimal arithmetic in C
    ... >>I once used double precision floating point in exactly that manner. ... >>It made sense since I had compiler and hardware support for D floating ... compound interest calculations require a larger ... > A scaled integer meets the requirement of exactness. ...
    (comp.os.vms)