PCs that support only one floppy drive in hardware - test-drb@ccmp.vtda.org

12 Oct 2005

...

Subject: Re: PCs that support only one floppy drive in hardware
   From: "Nico de Jong" <nico at FARUMDATA.DK>
   Date: Wed, 12 Oct 2005 14:44:31 +0200
     To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at
classiccmp.org>

----- Oprindelig meddelelse ----- 
Fra: "Steven N. Hirsch" <shirsch at adelphia.net>

 I'm sitting here looking at a TEAC FD-55GFR 5.25" floppy drive with a 
 TEAC-branded SCSI daughterboard mounted on it.  Picked this thing up for a 
 buck at a flea market and don't know much about it.  Anyone else familiar 
 with it?  I'm not even sure if this is a HD drive.
  GFR is the 1.2M (HD) drive
Nico 
That is way to terse an answer.   

The board _may_ have been a comonent in a DEC system (microVAX3100 series)
as an RX33 drive via SCSI.

The FD55GFR Floppy disk drive is a 5.25 dual speed, two sided drive 
capable of PC 1.2mb mode as well as operation at all lower density 
96tpi modes and if double stepped will reliabily read 48tpi formats
both single and double sided. This type drive in the nonPC world
was also called DSQD(Double Sided Quad Density for up to 800kb) 
or DSHD (Double Sided High Density for up to 1.2b) While used
in PC based system it also  appeared in Digital in both their 
VAXmate, DECmateIII, PDP-11 and microVAX (3100 series) systems 
as RX33.

Somebody should archive that.

Allison