Here's a weird one (kinda OT)

I have a 3Com 3C509B-TPO (16-bit network adapter) in a 486 PC running in DOS 6.22. All the drivers are loaded and working and I can connect up to my Win2000 box and mount its volumes locally. All good. But when I try to transfer large files the DOS system invariably locks up. I have to do a cold boot. I played around with the BIOS, disabling one feature at a time until I found the culprit. Once I disabled the Internal CPU cache then things worked fine. So my question is, why? 3Com's 3C509B FAQ didn't address this issue and I couldn't find anything I don't expect an answer really. This is one of those problems that only occurs to one unlucky person somewhere in the world at the worst possible moment. Fortunately I can move files but it would be nice to know what might be the problem if there is a solution. -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]