[Info-vax] VMS 5.0

[Rich Alderson]

Johnny Billquist <bqt at softjar.se> writes:

> On 2011-11-10 18.33, Richard B. Gilbert wrote:

>> My fading memory insists it was a "TU-81". It was nine track 1600 BPI.

> Probably a TU80 in that case. The TU81 looks the same, but uses TMSCP 
> instead of the TS11 flavor interface. And the TU-81 can do 6250 bpi, as 
> well as 1600 bpi. I can't think of any sane person who would want to do 
> 1600 if you had the choice of 6250 as well.

Digital's 9track distribution tapes were done at 1600bpi into the 1990s,
since that was "always" available at a customer site (whether the drive
was dual 800/1600 or 1600/6250, or flat out 1600 only), at least on the
36-bit systems, and from all appearances on the 16- and 32-bit systems as
well.  (We have in our archives an 800bpi Languages tape for the DEC-10
which was written with a predecessor to BACKUP and is not processable on
the currently running system.)

-- 
Rich Alderson                                   news at alderson.users.panix.com
    the russet leaves of an autumn oak/inspire once again the failed poet/
    to take up his pen/and essay to place his meagre words upon the page...