The i486 was so named without the usual 80-prefix, because of a court ruling that prohibited trademarking numbers (like 80486).
From a software point of view, the instruction set of the i486 family is very similar to its predecessor, the Intel80386, with the addition of only a few extra instructions.
There is an agreement between MS and Intel that Windows CPUIDs the PC that it's installed on, and if the CPU is fast it adds empty loop cycles in order to slow it down.
Microsoft made it because intel and amd must sell more processors so microsoft windows xp checks type if cpu and then uses slower code if the processor fast, and if cpu is slow winxp uses fast code wich gives more speed.
From me i'll say that nobody tested it...so it may be a joke and may be not...
The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the official policies, either expressed or implied, of the Department of the Army, the Defense Advanced Research Projects Agency, or the U.S. Government.
PC-ATOMIC is an Inteli486 PC VL-Bus host interface for the ATOMIC LAN [5] [6].
This may be an indication that the backplane speed plays a critical role in the performance of the host interface.
i486 clusters(Site not responding. Last check: 2007-10-21)
On Sat, 8 May 1999, Kragen Sitaker wrote: > Martin Marques writes: > > Would it be aceptable to make a cluster of i486 and i386 (very poor > > machines) with a beowulf?
I've never worked with a beowulf, and I may have to configure one in one of the computation laboratorys with 3 PPro and 18 P133.
And I won't be using the machines for computational calculus (I'm talking about the i486), but to use as internet client machines, and maybe have an X-server runing.
This release fixes a missing linker file in the i486 gcc tools.
The distribution archive is an i486 working subset of the full distribution that consists of (4 each) i486, uclibc_i486, Arm pxa250, and Arm uclibc_pxa250 archive sets.
To complete the full i486 SDK, you might also be interested in the i486 b, c, and d archives available on the site.
To retain compatibility with Slackware 9.0, we'll have to use i486 (or better) as the compiler target for gcc-3.3.
testing/packages/gcc-3.3/gcc-g++-3.3-i486-1.tgz testing/packages/gcc-3.3/gcc-g77-3.3-i486-1.tgz testing/packages/gcc-3.3/gcc-gnat-3.3-i486-1.tgz testing/packages/gcc-3.3/gcc-java-3.3-i486-1.tgz testing/packages/gcc-3.3/gcc-objc-3.3-i486-1.tgz testing/packages/glibc-2.3.2/glibc-2.3.2-i486-1.tgz: This is also compiled for a minimum target of i486 (the gcc-3.2.2 i486 compiler was used).
Again, if the future plan is to drop support for i386 in the main version of Slackware, then we might as well start doing that soon.
AspisOS : Generic i486(Site not responding. Last check: 2007-10-21)
Apart from those devices supported by all SBCs, the i486 has additional support for a number of devices that can only be present on a custom PC configuration.
Strictly speaking, i486 supports all devices supported by linux kernel as of 2.6.14.7.
The focus is on i486 and ARM systems that use compact flash devices (handhelds and PC104 type boards).
The distribution consists of a primary archive with tools, scripts, and documentation, and additional archives for the i486 and PXA250 binary components.
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LinuxPickup - Selling Linux CDs & DVDs - KNOPPIX 3.4 English i486 - 1CD(Site not responding. Last check: 2007-10-21)
LinuxPickup - Selling Linux CDs & DVDs - KNOPPIX 3.4 English i486 - 1CD
On-Line Store: » Linux » Live Disks » KNOPPIX » KNOPPIX 3.4 English i486 - 1CD
KNOPPIX is a bootable CD with a collection of GNU/Linux software, automatic hardware detection, and support for many graphics cards, sound cards, SCSI and USB devices and other peripherals.