Bridging the Gap Between Sinclair & IBM

I finally got my hands on an IBM PC. After having worked on a main frame for so long, I found the IBM to be a pleasant experience. I also discovered that the file system on the IBM was similar to that of the main frame— though much slower. Since I was still hacking away on my ZX81, I decided to simulate a file system on the Sinclair. The following program is what I came up with.