C8087-11?

[per]

I recently got hold of this little thing, but I can't find any mention of a "8087-11" anywhere on the internet. Does anyone know any more details on what specs this might operate with?

The module itself is for adding an 8087 to a machine with just one socket for a 8086. Unfortunately the 8087 is soldered in while the 8086 is not.

 

[Twospruces]

Engineering Sample of a CMOS 8087 at 11 MHZ?

 

[Twospruces]

Does it work? If so.. measure the current!

 

[pbirkel@gmail.com]

See the center of: https://www.ebay.com/itm/125703903376

And then: https://bitsavers.org/pdf/intel/iSBC/142887-001_iSBC_337_Numeric_Data_Processor_Nov80.pdf

 

[per]

Engineering Sample of a CMOS 8087 at 11 MHZ?

11MHz seems like an odd number, given the typical 808x product line at the time didn't go above 8.

 

[per]

See the center of: https://www.ebay.com/itm/125703903376

And then: https://bitsavers.org/pdf/intel/iSBC/142887-001_iSBC_337_Numeric_Data_Processor_Nov80.pdf

There was a D8203 from around the same time as the CPU in the lot too, so I guess it came from an iSBC-86/12.

 

[gslick]

 

[Twospruces]

View attachment 1271602

Ha I was going to make that reference too!! Good one!