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Article #46 (74 is last):
From: aa700@cleveland.Freenet.Edu (Michael Current)
Subject: XF551 / hardware
Posted-By: xx004 (aa700 - Michael Current)
Reply-To: aa700@cleveland.Freenet.Edu (Michael Current)
Date: Tue Apr 21 19:47:04 1992

Reprinted from the A.C.E.C. BBS (614)-471-8559

cINSIGHT:  Atari               by Bill Wilkinson

Permission to reprint this article is granted so long as the following statement appears:

COMPUTE! Publications, Inc.  Copyright 1987
Article from November 1987  page 71

After three months of pretty heavy stuff, it's time for a slightly different attack.  And since my time has recently been monopol.

The XF551 is a sleek drive, lower and wider than a 1050,and in a style and color that matches the XE computers.  Quite simply, it.

The XF551 started out as the XF351 - the 3 designated a 3 1/2-inch drive.  Some people are disappointed that Atari changed over t.

For starters, the drive is compatible with disks created by virtually all Atari-compatible drives - in single, enhanced, and doub.

At a suggested price of under $200, the fact that a true double density drive is now available from Atari would be welcome news. .

As I write this article, Atari does not have a DOS that will support this extra capacity.  However, the reason this drive has mon.


As you may remember, I discussed SIO (Serial Input Output) as it applies to disk drives, in the September 1985 issue.  I noted th.

Then, in the next issue, I explained the concept of a device configuration table, as implemented by the makers of true double-den 

O (which I think of as iN and Out) commands on the serial bus.

But there's even more.  If you send it a Read or Write or Put command with the upper bit set (the inverse video bit, in screen te.

Last, but not least, the XF551 adds a special format command (hex $A1, an inverse video exclamation point) that tells the drive te


So the drive gets my nod of approval from a software standpoint.  But what about the hardware?  Will the drive stand up to physic.

In fact, Atari has never produced a more solid piece of equipment.  The drive frame is heavy-duty cast aluminum, the mechanical ps


If this column sounds like an advertisment for th XF551, I won't apologize - I'm not getting a penny in royalties on the drive or.
 Michael Current, Cleveland Free-Net 8-bit Atari SIGOp   -->>  go atari8  <<--
   The Cleveland Free-Net Atari SIG is the Central Atari Information Network
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