6 Jun
2000
6 Jun
'00
10:30 p.m.
; In standard RT-PC mode, a 2:1 interleave is used on
a single track and
; a 2 sector skew is used across tracks.
("RT-PC" means "RT-11 on a DEC Professional", roughly!)
Gee, let's not forget the old IBM RT-PC dinosaur.....(:+}}...
It was an entirely different beastie by the same name, that I am sure
a few of us have played with over the years. It's a prime candidate for
the UHS style fodder, if there were any interest in the thing besides
with me. Anyone else aboard play with that dinosaur critter?
......
Terry Kennedy's THIRD-PARTY-DISKS.TXT, available
via anonymous FTP
from
ftp://ftp.spc.edu/third-party-disks.txt
Since this subject comes up several times a year, would it be possible
to link to the above document from somewhere in the PUPS archive, Warren?
Yes, I would like to see Warren mirror such things, as space and utility
dictate. Sometimes some redundancy in these forgotten lores is good.
I am sure there are other such docs and texts of wisdom that collectively
we should centralize in the archives, space, copyrights, permissions, etc.,
to be worked out in some way. At least, link to the urls, as long as the
urls don't break.
Bob
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7 Jun
7 Jun
8:50 p.m.
New subject: RT confusedness....
Gee, let's not forget the old IBM RT-PC
dinosaur.....(:+}}...
It was an entirely different beastie by the same name, that I am sure
a few of us have played with over the years. It's a prime candidate for
the UHS style fodder, if there were any interest in the thing besides
with me. Anyone else aboard play with that dinosaur critter?
Yup.. But only with 4.3BSD on it.
The assembly mnemonics stil crack me up. Seems like IBM somehow
misunderstood 'RISC' for Reduced Mnemonics.
The comments inserted in assembly code by the C compiler gave some
indication of the brokenness of the CPU.. Lots of NOP's added in several
places with remarks like "Add NOPs, otherwise register contents will be wrong".
But hey...
Before that I was used to working with 40 students on a uVAX 3600
(which I now own and run :-), so to me these RT's were pretty darn
quick!
Still would like to get my grubby paws on one though. Somehow this
collection of old UNIX machines is becoming an obsession :-)
Bye, Arno.
--
PSINetworks Europe Fax: +31-23-5699841 | One disk to rule them all,
Siriusdreef 34 Tel: +31-23-5699840 | One disk to bind them,
2132WT Hoofddorp+--------------------------------+ One disk to hold the files
The Netherlands | * Musical Interlude * | And in the darkness grind 'em
----------------+--------------------------------+------------------------------
We say Retribution, We say Vengeance is bliss, We say Revolution,
With a Cast-Iron fist! (Megadeth, 'The Disintegrators')
--------------------------------------------------------------------------------
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