Hi George,

I got started with a North Star Computer, Z80 4.7 MHZ, 32K memory and two 180K floppies. it cost me about $10,500.00. I worte a time and billing porgram with it, but came to find out that it was limited to North Star Computers, because it was written in North Star Basic. Later CP/M arrive which was a very efficient little operating system. I ran superclac, wordstar, and MS Basic on it. I learned about five years ago that wordstar was written in assembler by one individual. I bet that took a lot of effort.

With the arrival of the IBM persoanl computer and 16 bit MS DOS, all computers based on the Z80 8 bit model kind of fell by the wayside. The Z80 only allowed a maximun of 64k of memory. MS DOS and the IBM PC went up to 640K of memory.

LelandJ

LelandJ