"Andy Champ" wrote in message
. uk...
dennis@home wrote:

When I started they were in the 5 MB range and were 14" dia, you built
controllers with RLL compression and stuff like that.
Typically they would occupy a couple of MB1 sized cards or a bit more.


RLL Compression? Pray tell me more.

Well you replace long streams of the same bits with shorter ones.
But as you mention it I doubt if thats why RLL coding was used.