Xerox 6085 IOP firmware

[Al Kossow]

On messftp/uploads/6085_IOP_Firmware.zip

I have been working on trying to get Smalltalk running on it, so I went through and checked
all of my IOP boards for different revs of firmware. There are only two that I found, the later
one added support for >80mb disks.

The 6085 has a 80186 instead of the 8085 in the 8010, and there is much more code running on it
than what was on the 8010.