Kahan on the 8087 and designing Intel's floating point

[@nezbrun872]

Awesome. I've never done floating point in hardware, but I have written two floating point libraries in assembly language for the Z80 ~30 years ago, one IEEE754 compliant and the other built for speed. That was back in the day when as an individual you could understand and he a deep knowledge of how your entire system stack worked, from the keyboard and display down to the wire, and you debugged your code with oscilloscopes and in-circuit emulators.

[@rickburtaine7018]

Yube offers up Kahan so I watch for many reasons. Began as hobbyist with a Z80 system (TDL). Years later I am back with 8080 assembly language. Always wanted to learn the mechanics of floating point. Would you make your Z80 source code available?

[@Alex-jb5tb]

Mr. Kahan also worked on the FPU ? Wow ! I love his Kahan summation algorithm and its many variants so much.

[@anthonyrosica5790]

Pure astonishment.

[@f.a.j.4685]

I would like a longer tape, or the whole tape, without sudden interruptions at the end. 😢

[@TuringAwardeeClips]

As it says in the video description: Video of the full interview is available as part of Kahan’s ACM profile at amturing.acm.org/award_winners/kahan_1023746.cfm. Just follow the link, then click "Video Interview".

[@logipilot]

Me: barely understanding ieee754

[@nasigoreng553]

Fantastic Video. Its igniting my reactor to start completing my 8088 / 8087 project.

[@MichaelKingsfordGray]

Is that your real name?

[@AlonzoTG]

I got the bug to build an 8086/8087 but I eventually regained my sanity, good luck tho. =)

[@MichaelKingsfordGray]

HP used BCD floating point. Far superior in every respect to his pure binary.