expansion differences (was Re: Micro$oft Biz'droid Lusers)

There's no disputing that the SS-50 bus machines didn't have the popularity or support of the S-100 bus machines though both lasted into the early 80's. Most were relatively low priced kit machines while later ones changed to higher priced machines aimed at the business market. Early disk systems for them tended to have quite simples DOS's that were comparable to North Star's DOS. Later FLEX and Uniflex were almost universally adopted though some people would run OS-9 as well. One of mine was set up for OS-9 when I received it. The CPU's used were the 6800 and 6809 with newer CPU's adopted by builders as time went on, plus a cool dual-CPU machine Jeff -- Home of the TRS-80 Model 2000 FAQ File http://www.cchaven.com http://www.geocities.com/siliconvalley/lakes/6757