[comp.sys.atari.st] TEAC 2.88MB SCSI floppy

kiki@uhunix1.uhcc.Hawaii.Edu (Jack W. Wine) (04/24/91)

There is discussion in comp.sys.nsc32k about using a SCSI floppy with their
systems and they are considering a group purchase.  I was wondering if this
newsgroup is interested with using a 2.88 MB SCSI floppy with their Atari ST
systems.

This information was obtained from TEAC America [(213) 726-0303]: there was a
new standard implemented late last year (~Nov. '90) for 4MB ED disks, so that a
disk density indicator hole would specify to a 2.88MB drive whether the insert-
ed disk was of 2.88/1.44/720 formats.  This new standard resulted in a new 
model 2.88MB drive.  TEAC's model number for the drive implementing the change
in optical sensor and firmware is FD-235JS-501-U.  This differentiates it from
the old standard drive which has model number FD-235JS-401-U.

There is a programming manual for the drive and it is part number FC1-01 Soft-
ware.  Contact Ken Rivera at TEAC (extension 654) to order the manual.  

The 2.88MB drive has these specs: 2 heads, 80 cylinders, 36 sector/track, 300
rpm rotation, 135 tracks/inch, 90 KB/s formatted transfer rate (four times 
faster than 720K drives).  The drive is downward compatible with 1.44MB/720KB
disks.

The suggested list price for the TEAC 2.88MB SCSI floppy is $285 and for their
1.44MB SCSI floppy, $230.

Two distributors for the TEAC drive are in California:

Western Micro (619) 453-8430
J.D. Hannam   (714) 632-3458 

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Some benefits for Atari ST/TT owners would be four times storage and speed,
without modifying your floppy controller.  It would also be fun to inexpensive-
ly experiment with SCSI.  

The drawbacks are that a special driver has to be written for the drive and
a SCSI adaptor is required.

This info is posted to gauge how many people would be interested in either the
2.88 or 1.44MB SCSI floppy.  If emailing a reply to me, please specify these
things: 
	a) prefer 2.88MB or 1.44MB SCSI floppy
	b) max. price you would pay for either drive
	c) willing to write a driver to interface it with the Atari ST/TT
	d) willing to handle a group purchase [others may pay a handling fee]
	   person should be in the Southern California area.
	e) any comments [this is bad idea, other preferred brands, etc.]

I'll post a summary in about 7-10 days.

Thanks,
Jack