Re: FB-354 drive incompatibility

From: Michał Pleban <>
Date: Wed, 20 Apr 2016 14:08:40 +0200
Message-ID: <>

Konrad B wrote:

> When the A1000 came out, we wanted to be able to automatically detect
> disk insertion. So Neil Katin came up with the bright idea which solves
> the usual problem of disk detection by stepping the drive head, which
> resets the disk inserted latch. This, allows us to automatically detect
> the insertion of a disk, or the removal of a disk, because the latch is
> reset."

1. So I assume that I can reset the latch by stepping the head? That's
good to know. It would require a microcontroller sitting next to the
floppy control chip to step the head periodically. It could be done with
a 8-pin PIC I suppose.

2. How does 1581 work then, which uses the same mech but does not "click"?


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