Re: Did Commodore cheat with the quad density floppies?

From: smf <smf_at_null.net>
Date: Wed, 9 Jan 2019 13:09:43 +0000
Message-ID: <7d8942cc-2462-d93e-d489-115f38b2b38a@null.net>
On 09/01/2019 10:20, silverdr@wfmh.org.pl wrote:
> That would be a day and hands saver more than once, but even if the drives had jumpers, which became rare with time (as a result of the original design choice), I don't see how this would work. You could theoretically swap _DS2(1) with _DS3(2) but you'd also have to swap _MTR with _DS1(0) to have a working conf again.

This is for 3.5" disks, but google showed this forum post

http://www.vcfed.org/forum/archive/index.php/t-43518.html

A Floppy such as the Teac FD-235F, HF - 3XXX Series has such options.

19501


Another Possible JUMPER that is TYPICAL for Floppy Drives is one labeled 
MO or MS.
MO is "Spindle Motor Controlled by Motor On Signal, which is Pin 16".
MS is "Spindle Motor Controlled by Drive Select Signal, which could be 
One of four possibilities".

Another possibility is a HM Jumper.
HM is "Head Load with Motor ON".

I haven't a clue as to the other Jumpers on your Epson Floppy.
Received on 2019-01-09 15:02:11

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