24 Jan
2013
24 Jan
'13
1:29 p.m.
On Thu, 24 Jan 2013, Ethan Dicks wrote:
On Thu, Jan 24, 2013 at 3:36 PM, David Riley
<fraveydank at gmail.com> wrote:
Dice? Do you mean "dies" maybe?
g.
--
Proud owner of F-15C 80-0007
http://www.f15sim.com - The only one of its kind.
http://www.diy-cockpits.org/coll - Go Collimated or Go Home.
Some people collect things for a hobby. Geeks collect hobbies.
ScarletDME - The red hot Data Management Environment
A Multi-Value database for the masses, not the classes.
http://www.scarletdme.org - Get it _today_!
On Jan 24, 2013, at 1:42 PM, Fred Cisin <cisin
at xenosoft.com> wrote:
He may be talking about the AMD second-sourced 486SX, which may have
had a different method of disabling the FPU. My recollection is that
the 486SX was, in fact, the same die as the 486DX (FPU and all) with
a fuse blown that disabled the FPU.
Back in the day, I heard the FPU was "disconnected" with laser-drilled
holes on dice that failed FPU testing, then the package was labelled
to match. To be clear, a wafer was made up of dice that were intended
to be sold as 486DX chips but failed FPUs (and most likely enough ones
with good FPUs to cover customer demand) were pierced.
debacle,
there was software thatcould
completely restore functionality.I think it was called above-board,
NOPE.
which had hardware as well as software,but on
many SX type systems it
was just software Actually if I remember correctly it was the 486SX CPUs
made by AMD
We are talking INTEL.