5-1/4' drive on modern PC

From: Kevin Handy <kth_at_srv.net>
Date: Sat Dec 11 15:12:09 2004

Tom Peters wrote:

>There was an attempt to "simplify" connection of multiple floppy drives
>(meaning TWO) at one time by adding a "twist" to the cable-- some
>conductors in the ribbon are cut out and reversed, which is a sort of
>"cable select" for floppy drives.
>
>
It was done on an obscure machine called the IBM PC.

If you open up a modern PC with two floppy drives, guess what
kind of cable you will see?

>I seem to recall in this case that one would jumper both drives as drive A
>in such a case, or as DS0.
>
>
You jumber them both as drive B (DS1).

Can you even find floppy drives any more that are not hard coded as drive B?

>Stupid idea. Use a straight thru floppy cable and jumper one for DS0 and
>one for DS1. We get it.
>
>If you intermingle the two drive select ideas you may have problems where
>both or niether drives light up and niether can read.
>
>
>
But if you become the de-facto standard, all the clone makers will copy
exactly
what you did. Both the good and bad ideas.

----
Two floppies and 640K are enough for anybody...
Received on Sat Dec 11 2004 - 15:12:09 GMT

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