Hi, all,
I have the opportunity to pick up a couple of NCD 19r mono Xterms
locally, if I want (someone else declined due to lack of basement
space). I have not tested them, but I can. Doing a bit of digging, I
see that folks have offered them on numerous mailing lists over the
years (including suns-at-home, and I think here) and frequently get no
takers, so it sounds as if they have no assignable cash "value". Does
anyone here have any experience with them, how hard it is to find the
software for the tftp repository? (I did a non-exhaustive search and
haven't found any yet) Besides performing their obvious function
(serving a mono framebuffer, mouse, and keyboard), are they neat in
any way, or are they part of the dustbin of history? They are kinda
large, so I'm not exactly eager to move *more* large CRTs into my
house without good reason. I'm seeking a reason. I already have an
HDS xterm that I got working some time back, but it's just a slab -
you use your own monitor. *That* doesn't take up too much space on
the shelf. A large glass bottle does.
Thanks for any input and/or stories about the NCD 19r.
-ethan
> The newer ones are definitely 3 digits, gap, 2, smaller gap, 2, small
> gap, 2, even though one of them has 4 leading digits, only 3 are
> driven by the swath of MC14543s, so I'm going to go with DOY,
> hrs/min/sec for both of the newer units, which does suggest precision
> timekeeping devices.
Certainly sounds like Julian-day-hour-minute-second to me, just like all the
timecode displays I've ever seen going back a good chunk of a century :-). I
looked through the truetime schematics I have and none of yours match exactly
so maybe some other brand.
Some similar displays are sometimes used in video and movie editing and
production (think those LED slates), although there the 3- or 4-digits
would probably not be day, but some sort of sequence number, dunno for sure,
I only briefly touched Hollywood :-)
Tim.
-----Original Message-----
From: "Al Kossow" <aek at bitsavers.org>
To: classiccmp at classiccmp.org
Sent: 09/02/2009 21:51
Subject: ISO HP-UX 9.10 install CD
I need to get a system running to recover some data from some
HPIB drives. Does anyone have one to spare, or an ISO image of it?
> So do any of these LED assemblies ring a bell with anyone in terms of
> type or brand of equipment?
Time code displays? Google terms: IRIG, Symmetricom, Truetime
Getting sales attention from Truetime/Symmetricom has been very hard the past couple of years.
If the digits weren't grouped for time codes, then pinball machine score readouts
MC14543/CD4543 is actually a very nice BCD to seven segment decoder if not the very beefiest output current
Tim.
I have the firmware for these kicking around somewhere. They can also
be used as a serial terminal (after loading the firmware) and have
sockets for ROM firmware.
Chuck,
Thanks, that did it!
Tom
-----------------------------------------------
Chuck said:
The Kaypro uses an enhanced LSI ADM-3A set of escape sequences to
control the display. See section 16.0 in the Kaypro technical manual
at http://bitsavers.informatik.uni-stuttgart.de/pdf/kaypro/1484-
D_KayproTechnicalManual_Dec84.pdf
Hi All,
I have a nice, working Kaypro 4 machine running CP/M 2.2, and am
beginning to do some assembler, pascal, and c programming on it.
I'd like to do some games in the near future but have been unable to
find any documentation on addressing the screen. Is this thing just a
dumb terminal (I don't think so), or are there some terminal
capabilities someone can tell me about or point me to?
TIA,
Tom
Well... I'm now in possession of one of these...
sadly... it doesn't boot... the hd doesn't seem to spin up....
I know nothing about these....
Anyone have any info on them ? Have boot media ?
procedure on checking if drive is recognized in bios...
(so far bios seems to have one letter commands, r for register dump, m for
manipulating memory, b for boot, etc... no help command, no ? command)
I was really hoping this thing would boot... if so, I was then going to
pull the
SCSI drive and image it....
This is an i860 based system. I've found few references on the net to a
SVR4
variant called OKIX ?
-- Curt
I have a box of LED displays that I picked up all at once from a
Hamfest, probably either Dayton or Mansfield. There are enough
similarities between the three types that I figure they are from the
same maker. I don't have any easy way to take pictures right now, but
I can post the relevant characteristics to see if anyone has any
recognition. They seem easy enough to reverse-engineer, so while I'd
love schematics or other documentation, I'll be able to use them
without. I'm mostly curious what equipment they might have come out
of.
#1 - the oldest style. Marked "assy 4000123-101". Three double-digit
MAN6610 displays with a "336" date code on a "front board" attached to
a driver board by dozens of individual 330 Ohm 1/4w resistors used
structurally as well as electrically. The driver board has six
74LS47s with date codes of "231". There are four lugs on one short
edge of the board with cut wire stubs, E1 and E2 have orange wires, E3
is blank, E4 has a black wire - +5V and GND. The data comes in on 30
individual wire-wrap stakes with the stubs of the old WW wire still on
them, BCD data plus latch x 6.
#2 - the middle board in age and appearance. Marked "assy 4002244",
with 4002243-1 on the front, it's a newer board with a solder mask,
and has *five* dual-digit LED displays, HDSP-K121s, grouped as 4
digits and three pairs of digits - as if it could display year plus
hrs/min/sec or DOY plus hrs/min/sec. It uses an unusual (to me)
driver chip - *nine* of a Motorola MC14543 (date code 9026) which the
datasheet tells me is suited for LCD driving. It also has the same
power lugs on the short edge, E1-E4 with the same color stubs. There
are 49 WW pins around a long and the opposite short edge. They
appear to be strangely numbered, first in nine groups of four, then
with ascending numbered pins adjacent to the groups (probably BCD plus
latch), with the last four pins over on one short edge.
Both of these displays have pins that are not aligned nor spaced to
permit a ribbon cable or molex or Berg connector to easily attach, and
in fact, both still have wire-wrap wire stubs, so they appear to have
been somewhat permanently attached to their surroundings. They also
take an enormous number of pins, but would be trivial to drive from
4-bit counters and such (thus the newer one would make a perfect
display for a DOY+TOD clock made from discrete TTL or CMOS).
#3 - much more modern design. Marked 4005935-1 on the back and
4005936-101 on the front. It has nine single-digit hpHDSP-E103
displays (date 852) driven by a pair of Maxim MAX7219CWG (date code
9611) 8-digit clocked-serial-interface LED drivers. It's physically
grouped as three digits, then three pairs (DOY+TOD), and comes with a
red plexi bezel with "error" over the bottom edge of the "single
hours" digit and "dropout" over the bottom edge of the "single
minutes" digit. Its connector to the outside world is a keyed and
latched 3M 3408 connector - 2x8 0.1" spacing.
So do any of these LED assemblies ring a bell with anyone in terms of
type or brand of equipment? The only thing that even closely
resembles a company name or logo is NTUF-1 near the commonly-seen
'94V-0' legend.
Thanks for any hints or suggestions,
-ethan
I have been performance tuning my TCP/IP stack mostly by looking at the
code and making educated guesses as to what needs to be fixed. I have
just wasted a day rewriting the IP checksum routine in assembler for a
few tenths of a percent improvement and I'm not terribly happy. :-)
Is there a sampling profiler available that will periodically record the
program counter and give me a histogram of what it finds when it is
done? I'm thinking of something like oprofile on Linux.
If it does not run in pure DOS but requires an emulation environment,
that is ok too. I just don't know what any of the options are.
Thanks,
Mike
