For me, the best way to interface with my DEC hardware
was with a (hardware) TCP <> LAT converter.
Xyplex made one many years ago (The MaxServer 1710)
supposedly supported 24 concurrent sessions.
I have one, but I've never used it, due to lack of
documentation on the product.
Instead, I rolled my own version using
Micom's Marathon series of Integration Multiplexors.
Using either a Marathon 2K, 5K, 5KT Pro, 10K, or 20K unit,
combined with their "Remote Terminal Server" option module,
you can create a TELNET <> LAT server, which will allow in excess
of 32 simultaneous sessions.
I can't provide any throughput statistics, however it should
handle anything that a (real) PDP-11 could throw at it.
The base units can be had off of e-bay for $25 - 50, and are readily available.
The Remote Terminal Server module is a bit harder to find;
I've seen them for $45 - $125 over the years.
You can still get them NEW for about $250 from the Marathon Store,
though this price is several years out of date.
At any rate, you can't get much more universal than TELNET. ;-)
My equipment is currently in mothballs right now,
but if anyone is interested in the configuration settings
required to make the Marathon equipment work,
let me know, and I'll dig up the info.
T
The PDP-9 at the RICM uses a bunch of B602 Pulse Amplifiers. One in the
Processor Microcode clock circuit is intermittent. The transistors are
listed in the Schematic as DEC-6A and DEC-6B. The parts are marked
DEC-2894-3A and DEC-2894-2B.
Can I substitute 2N2894 parts for these transistors?
--
Michael Thompson
So, I've got a PC here with a brain-dead BIOS that only acknowledges 3.5"
HD drives. Ugh. I can hook up a 5.25" HD drive instead and override the
BIOS type when booting Linux (passing "floppy=0,2,cmos" to the kernel), and
that seems to work.
However, when hooking up a (good) 5.25" DD drive (and using
"floppy=0,1,cmos") I consistently get I/O errors.
Anyone have any theories as to what the problem might be? Maybe the FDC in
the machine just plain doesn't support 250k/s transfer rates (unfortunately
I don't have any 3.5" DD media to test that by formatting a disk in a 3.5"
HD drive) - but that would seem like a weird feature to abandon?
Formatting 5.25" DD media in the HD drive *appears* to work, but I assume
that will be using a 300k/s rate rather than 250 (and of course the
narrower head width makes it pointless anyway)
I can haul another PC out of storage with a better BIOS/FDC, but I'm still
curious as to what the problem might be with this setup. Linux just
identifies the FDC as a "post-1991 82077" (for which 250k support is
claimed), but I expect it's a reimplementation within a larger I/O chip
rather than a discrete FDC IC.
cheers
Jules
After a few hours' work, my old 300MHz beige G3 tower, pulled from a
dank corner of the garage, is up and running again with a stonking
384MB of RAM and a clean install of MacOS 9.2.2. All praise to the
University of Glasgow for hosting free International English (etc.)
versions of the 9.x updaters!
http://www.gla.ac.uk/~gwm1h/macos9/
--
Liam Proven * Profile: http://lproven.livejournal.com/profile
Email: lproven at cix.co.uk * GMail/G+/Twitter/Flickr/Facebook: lproven
MSN: lproven at hotmail.com * Skype/AIM/Yahoo/LinkedIn: liamproven
Tel: +44 20-8685-0498 * Cell: +44 7939-087884
I always love dragging out the Atari 400 and taking those classic games for
a spin. Here is another one of my video remakes for those who might be
interested. http://youtu.be/UNf8OQaud2M
Tez
looking to run one of my computers on 98se and am looking to find the
updates for 98se the archived updates and not the unofficial service
pack but the updates all the way up to july 2006 if anyone knows where
to get them let me know
