In <[email protected]>, on 12/17/2009
at 02:10 PM, Rick Fochtman <[email protected]> said:
>IIRC, the DAT box was optional on the 370/145 and became standard on the
>370/148.
No; the "upgrade" on the 370/145 was a new floppy disk.
>Ditto the 370/155 and 370/158 and 370/165 and 370/168.
No; the DAT boxes on the 370/155 and 370/165 were post-delivery field
upgrades[1], not options that you could order. At $200K (155) and $400K
(165), it wouldn't have made economic sense either to offer or to order a
370/155 II or 370/165 II once the 158 and 168 were announced.
>The 168 was unique in the 370 series because it used outboard
>channels; as I recall , it was the only 370 that did so.
The 165, 165 II, 168 and 195 all had outboard channels; I don't know
whether you consider the 370/195 to be a true S/370.
[1] There was no field upgrade from a 165 to a 168, and we had one.
--
Shmuel (Seymour J.) Metz, SysProg and JOAT
ISO position; see <http://patriot.net/~shmuel/resume/brief.html>
We don't care. We don't have to care, we're Congress.
(S877: The Shut up and Eat Your spam act of 2003)
----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to [email protected] with the message: GET IBM-MAIN INFO
Search the archives at http://bama.ua.edu/archives/ibm-main.html
