3.5" floppy drive in IBM XT?

From: Joe <rigdonj_at_cfl.rr.com>
Date: Tue Apr 8 16:23:47 2003

Don,

  The controller is full length and has XEBEC chips and a Z-80 CPU. I'm sure that it's MFM. It's marked IBM and next to that is a paper sticker that says #1501492. Also marked IBM 6135984 in copper foil. My diagnostic tool shows four settings in the ROM, the 10Mb drive is third setting. I didn't look at the capacity of the other settings. It's running this drive as a 10 Mb MFM drive but the drive is rated as a 32Mb RLL capable drive.

     Joe

At 11:19 AM 4/8/03 -0700, you wrote:
>On Tue, 8 Apr 2003, Joe wrote:
>
>> At 10:47 PM 4/7/03 -0700, Don wrote:
>> >
>> >Interesting question is whether it is being used as a 21mb MFM
>> >drive or as a 33mb RLL. My guess would be 21mb.
>>
>>
>> It's an RLL drive and is 32 Mb according to my sources.
>
>My curiousity was really as to the controller and whether it was
>RLL or MFM, Joe.
> - don
Received on Tue Apr 08 2003 - 16:23:47 BST