8087 Not Detected?

[Chuck(G)]

I checked the V-series MicroNOTEs I have for the V20 (from NEC America) and mention is only made of certain V20-8080-emulation opcodes possibly triggering the 8087 (BRKEM) and how to avoid it.

If you want to try NEC's version of the 8087, the part is uPD72091. I've never seen one for real.

 

[Agent Orange]

Ravin:

FWIW. I've been running a V20 (10 Mhz) and a 8087 in my 1000SX since 1988. No compatability problems whatsoever. Keep in mind that
your particular software must be able to support the 8087.