Remembering RAMAC

[Tim Riker]

Dwight K. Elvey wrote:
>  The problem with disk, of course, is the variable BPI.
> Today, with the electronics so cheap, the CD-ROM is made
> with a spiral track and it runs at a constant BPI by
> changing the rotation speed as it reads the disk.
> Dwight

Which, of course, is a problem in itself in that most drives change the
spin rate and so seek times are awful.

Exercise for the student: implement a constant angular velocity drive to
read constant linear velocity media

-- 
Tim Riker - http://Rikers.org/ - TimR at Debian.org
Embedded Linux Technologist - http://eLinux.org/
BZFlag maintainer - http://BZFlag.org/ - for fun!