I've got a mystery before me . . . there's a component, probably a 64Kx8
SRAM but, who knows? I can't find a lead on the manufacturer or whatever.
The part's numbered GLT751208-15 and four of them comprised the data cache
on an old '486 motherboard climing to have 256KB of cache. That, combined
with the number of the part, 512 for the number of k-bits and 08 for the
data width . . . looks right, but I haven't seen a data sheet for a 64kByte
Sram in a 32-pin package. All the ones I've seen are 128kByte parts.
As it stands, I'm inclined to wire one of these as the memory on an
8-bitter. Any inputs?
thanx
Dick
Hi --
Could somebody supply me with the switch settings for a Webster WQESD/04?
Many thanks.
-- Brian
--
Brian Harrington
Digital Knowledge Center
Johns Hopkins University
brian(a)sigh.mse.jhu.edu
What I have heard is that the human brain can process between a dozen and
two dozen "transactions" per second. But ... (sputter, sputter) ... so a 286
computer is BLAZINGLY fast by comparison ... wait, doesn't the human brain
process vast amounts of info? The human body is an absolute marvel as a
chemical plant; all those levels have to require tremendous amounts of
monitoring and adjustment? I guess I am confused on the issue of scope
versus speed ... so a brain could be considered to be parallel on a massive
scale then, whereas is a computer is serial; brain: millions of things done
slowly, computer one thing done with blinding speed ... am I way off base or
onto something???
Ray Cook
PS Sorry, its post finals excessive thought disorder;
everything is fried but it wont shut down!!!
It's the *same* guy... and yes, it still does not work.
john
PDP-8 and other rare mini computers
http://www.pdp8.com
-----Original Message-----
From: Hans Franke <Hans.Franke(a)mch20.sbs.de>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Date: Friday, December 17, 1999 8:57 AM
Subject: The joke is on (Apple1)
>Another Jerk found his way - you may remember the guy who had anounced
>his Apple 1 auction for Dec.1 ? now he is on ... and he didn't change
>his hype making rubbish ... I belive he never used this computer, otherwise
>he must know a bit more math :)
>
>http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=221015464
>
>Servus
>Hans
>
>--
>Der Kopf ist auch nur ein Auswuchs wie der kleine Zeh.
>H.Achternbusch
>
(as soon as Internic adds it to the database; until then, you can
reach the page at http://pdp11.workstations.org)
I've registered (yay!) and created www.pdp11.org. I'm aiming to
create an informational resource page for all makes and models of
PDP-11s, similar to my (very popular) effort for Sun Microsystems
computers at http://www.sunhelp.org.
I've got a very small collection of links up currently, and will be
adding more in the next few days as I work on the page. If anyone
has contributions that they would like to see listed, please email
me at mrbill(a)mrbill.net, and I'll see that they get there ASAP.
On another note, I'm still looking for a PDP-11 system of my own;
I'm not picky about model. If you've got one for sale, please let
me know; I've got a VT102 in the garage that's just begging to
be used as a console. 8-)
Bill
--
Bill Bradford * mrbill(a)mrbill.net / http://www.mrbill.net
mrbill(a)sunhelp.org / http://www.sunhelp.org
---------------------------------------------------------------------
"Fear leads to anger. Anger leads to hate. Hate leads to using
Windows NT for mission-critical applications."
-- What Yoda *meant* to say
<I'm a bit perplexed by this ad, mostly because I'm not a PDP person..
<though I would very much like to be. On
You ought to be.
<http://www.cadigital.com/enclosur.htm it reads:
<
<Digital Equiptment Q-bus BackPlane for PDP-8
<$9
PDP-8 is OmniBus, never used Qbus! Qbus is PDP11.
<PDP 11/23 four slot dual height backplace, DEC model H9281, designed for
<use in all kinds of DEV Q-Bus systems.
<
<got me. But whatever it is, $9 sounds like a low price..
It's the four slot out of a BA11box. It Q-18 and useful for only the very
smallest systems. $9 it's either expensive and useless or if you need one a
good deal.
Allison
"PDP-11 simulator V2.3d
sim> attach rl0 unix_v7_rl.dsk
sim> b rl0
@
And thats as far as I get... anything just gives me back the @
prompt (ODT?).
"
first stage bootstrap. it's waiting for you to type a file to boot from
someone REALLY needs to write up a FAQ for the simulator.
Anyone know of a source for RK05 mounting rails? I'm in need of four sets
(cabinet side only). I've got to get the drives off my garage floor before
I'm allowed to get any more stuff.
Thanks,
Bill
I have hardly ANY docs, so if someone could point me in an appropriate
direction I'd be grateful.
I'm trying to boot UNIX V7 off the disk images provided with Bob Supnik's
excellent PDP-11 emulator, running on my Ultra 5 under Solaris (compiled
with egcs/gcc):
-rwxr-xr-x 1 mrbill other 222192 Dec 18 03:45 pdp11
-rw-r--r-- 1 mrbill other 2048512 May 15 1998 unix_v7_rk.dsk
-rw-r--r-- 1 mrbill other 10485760 May 27 1998 unix_v7_rl.dsk
bash-2.03$ ./pdp11
PDP-11 simulator V2.3d
sim> attach rl0 unix_v7_rl.dsk
sim> b rl0
@
And thats as far as I get... anything just gives me back the @
prompt (ODT?).
Thanks for any help.
Bill
--
Bill Bradford * mrbill(a)mrbill.net / http://www.mrbill.net
mrbill(a)sunhelp.org / http://www.sunhelp.org
---------------------------------------------------------------------
"Fear leads to anger. Anger leads to hate. Hate leads to using
Windows NT for mission-critical applications."
-- What Yoda *meant* to say
Hi group,
As an 'old computer owner' (besides more modern ones),
who has an original (?) OLIVETTI M290 desktop
computer, i am searching for the 2 floppy disks that
belong to this type of machine:
1. the disk 'keyboard drivers & utilities'
2. the disk 'customer test' (which has the 'system setup'
utility on it...
Does any of you have a copy of these disks available??
Or, does anyone know where to get them from the net??
Thanks for solutions!
See you,
Robert
robwill2(a)wxs.nl
