How compatible were "MS-DOS Compatible" machines?

the Vic9K was the weirdest of the lot. Probably followed by the DEC Rainbow. They're all severely weird in their own right. For instance take the Tandy 2000. It was *pretty* compatible at both the DOS and BIOS levels, but a friend couldn't even get a BASIC program that taught morse code to work (it was written for a real peecee). He tried to enlist my help to tweak it, but we never got around to it. Many of these things were compatible at the DOS level, but most I think weren't even at the BIOS level. Like the NEC APC III (probably the APC too). I wouldn't worry about the psuedo-compatibles. Too much work *snifful* ____________________________________________________________________________________ Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ