But if you don't have automatic fast forward (and
some way to judge the
approximate postiion of the tape automatically), then finding a
particular file is consists of rewinding the tape to the start and then
reading the tape (at normal speed) until you find the file you want.
Which, using one side of a C90 cassette, could take 45 minutes. This is
going to get boring fast.
Especially with systems such as the ZX-81. I used the audio
cassette on my stereo for storage and it was usually a hit or miss
proposition when dealing with it.
Jeff
--
Collector of Classic Microcomputers and Video Game Systems:
Home of the TRS-80 Model 2000 FAQ File
http://www.geocities.com/siliconvalley/lakes/6757