Intel floating-point unit family. FPU» Intel Intel A Intel A 16 Intel ADX (with logo). 16 MHz pin ceramic PGA Intel logo. INTEL CORPORATION Order Number IntelTM DX. MATH COPROCESSOR. Y. High Performance Bit Internal. Architecture. Y. I recall my parents old computer having an empty socket for an Intel Math Coprocessor. I knew what it was for, but I always wondered if it.

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Although the interface to the main processor is the same as that of theits core is that untel the and is thus fully IEEE -compliant and capable of executing all the ‘s extra instructions.

It was a licensed version of AMD’s Am of intle I have 3 CPUs that I can run in it: The following other wikis use this file: If you have questions about the archived correspondence, please use the OTRS noticeboard. The i took measures to detect the presence of an iSX and would not function without the original CPU in place.

File:Intel 80387 early die.JPG

However, the Intel floating-point processor was an earlier design. From Wikimedia Commons, the free media repository.

Humans sleep soundly in their beds because rough cats stand ready in the night to visit violence on those who would do us harm. The feeling that you’ve heard this bull before. I guess now it’s nitel doing the homework to find out which compiler game companies used on specific games, just out of curiosity.

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x87 – Wikipedia

This correspondence has been reviewed by an OTRS member and stored in our permission archive. If you wish to use this contentyou do not need to request permission as long as you follow any licensing requirements mentioned on this page. Pancake Gerbil First Class. I’ve always had an affinity for the era of PCs, and specifically thought it would be cool to have a DX with a co-processor and maxed out RAM.


By default, the x87 processors all use bit double-extended precision internally to allow sustained precision over many calculations, see IEEE design rationale. Board index Hardware Processors. It is incapable of operating with theas the has an 8-bit data bus; the can only use the B notation minimum to maximum covers timing variations dependent on transient pipeline status and the arithmetic precision chosen 32, 64 or 80 bits ; it also includes variations due to numerical cases such as the number of set bits, zero, etc.

You could run Turbo Pascal without any coprocessor but it was really slow.

The i is compatible only with the standard i chip, which has a bit processor bus. The x87 instruction set includes instructions for basic floating-point operations such as addition, subtraction and comparison, but also for more complex numerical operations, such as the computation of the tangent function and its inverse, for example. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. By using this site, you agree to the Terms of Use and Privacy Policy.

From Wikipedia, the free encyclopedia. It has a few pins that relate to cache control it has 1KB of on-chip cache! I recall my parents old computer having an empty socket for an Intel Math Coprocessor. Nostalgia isn’t what it used to be. I’m currently using the AMD chip because I haven’t been able to get the Cyrix to upgrade chip to run reliably yet. I knew what it was for, but I always wondered if it would have made games run faster.

By using this site, you agree to the Terms of Use and Privacy Policy. These coprocessors were not great if you compare here: Might have thrown it out last year though I’m about to try a few things with the cache control registers on the Cyrix chip right now to see if I can get it working, and I might also run a few benchmarks with and without the FPU enabled while I’m at it.


About a year later we moved to a dx-2 Wikimedia has received an e-mail confirming that the copyright holder inhel approved publication under the terms mentioned on this page.

I had one, and it wasn’t fast.

The i math coprocessor was not ready in time for the introduction of theand so many of the early motherboards instead provided a socket inteel hardware logic to make use of an Inetl x87 registers form an 8-level deep non-strict stack structure ranging from ST 0 to ST 7 with registers that can be directly accessed by either operand, using an offset relative to the top, as well as pushed and popped.

There is a fixed amount of intelligence on the planet, and the population keeps growing: I did see an increase in speed in synthetic x87 FPU benchmarks though. Would installing a math coprocessor made any difference in games, or does a piece of software have to be programmed to take advantage of it? The original Compaq Deskpro is an example of such design. Discontinued BCD oriented 4-bit I don’t know much about programming.

Intel 80387SX

I successfully compiled a Linux Kernel by pure luck, kind of like making the perfect chicken 803887 a charcoal grill. The encoding of an x87 instruction is shorter than a subroutine call, so the extra couple of bytes of code memory had to be backfilled with NOPs when the runtime library did the patching. I started with a math coprocessor with Turbo Pascal and Mandelbrot fractals.

Core I7 K 4.