I always thought the 8087 was way cool, but it never really caught on. Early versions of Win32 did not save the 8087 registers on a context switch. I called up some people at Microsoft to please not destroy the 8087, and they relented and preserved the registers.<p>I&#x27;ve always been proud to support the 8087 with my compilers, and am baffled why the numerics people ignore it.

Thanks! I guess I didn&#x27;t have my glasses on when I read that number :-)

Minor erratum: &quot;1.1 (binary) × 2^8 is 304&quot; should be 384.

I describe the 8087 instruction decoding here: <a href="https:&#x2F;&#x2F;www.righto.com&#x2F;2026&#x2F;02&#x2F;8087-instruction-decoding.html" rel="nofollow">https:&#x2F;&#x2F;www.righto.com&#x2F;2026&#x2F;02&#x2F;8087-instruction-decoding.htm...</a>

Have you already covered how the decoding of instructions is shared with the 8086?

righto.com has been great reading. None of my friends wanted to pay for an 8087, but I can still remember getting out of school (for 2nd time) and saving up for the 486DX after 3 others got them. After that, well, it&#x27;s been quite a ride.

Author here with another 8087 article. What part of the 8087 should I look at next?