Defining Disk Image Dump Standard

From: Richard Erlacher <richard_at_idcomm.com>
Date: Tue May 30 18:27:50 2000

The 1770/72/73 were 28-pin parts with output buffers suitable for driving a
cable and with internal data/clock separator, and a few other features, but
still code-compatible (sort-of) with the 179x series. The 177x series of
which I write were for 5-1/4" diskettes only.

The 1773 has slightly different pins, two of them, than the other two
members of its family.

Dick

----- Original Message -----
From: Roger Merchberger <zmerch_at_30below.com>
To: <classiccmp_at_classiccmp.org>
Sent: Tuesday, May 30, 2000 4:11 PM
Subject: Re: Defining Disk Image Dump Standard


> Rumor has it that Richard Erlacher may have mentioned these words:
>
> >Just as an aside, I recently encountered a datasheet for the WD 1773 FDC
> >(similar to 1770/72). Do you know of any systems in which it was used?
>
> Wasn't the 1773 a single-chip version of the 1793, or am I out in Left
> Field? The early Tandy controllers that required 12V were based on the
> 1793, and weren't the later 5Vonly ones based on the 1773?
>
> I can't remember the numbers anymore... have to go home and look! ;-)
>
> See ya,
> Roger "Merch" Merchberger
> --
> Roger "Merch" Merchberger --- sysadmin, Iceberg Computers
> Recycling is good, right??? Ok, so I'll recycle an old .sig.
>
> If at first you don't succeed, nuclear warhead
> disarmament should *not* be your first career choice.
>
Received on Tue May 30 2000 - 18:27:50 BST