Category Archives: 286

Basement Finds

The other day I attacked an old and long forgotten 286 PC stashed away in the basement. The PC is dead because the power supply blew years ago and the motherboard has a non-standard power connector. But the case was … Continue reading

Posted in 286, ATi, PC hardware | 10 Comments

IBM XENIX: One Step Forward, One Step Back

A while ago I wrote about why IBM PC XENIX 1.0 can’t work on any CPU other than a 286. But not content to leave well enough alone, I attempted to patch this version of XENIX so that it would … Continue reading

Posted in 286, 386, IBM, VirtualBox, Xenix | 5 Comments

Forward Compatibility, Landmines

Several years ago, after attempting to get a very old 286 version of Xenix running in a VM, I concluded that it was probably incompatible with any 386 and later processor. Recently I revisited this issue and examined the problem … Continue reading

Posted in 286, Intel, Xenix | 32 Comments