>paramucho wrote:
>MACRO V5.05 crashed on 4-Mar-2008.
>
>It's a coding bug. MACRO was bit clearing a 5-bit rather than 4-bit
>field for the month. The fix:
>
>Loc Old New
>62160 177740 177760
>
>For other versions you're looking for this sequence:
>
>Old New
>000315
>006215
>006215
>042725
>177740 177760
>010015
>
Jerome Fine replies:
This post appeared on alt.sys.pdp11 and vmsnet.pdp-11 on
Monday, March 3rd, 2008. While it fixes the bug for the month,
the year is still incorrect.
By the way, I can make available a full Y2K fix for V05.05 of MACRO
which includes a 4 digit year - as opposed to DEC's version which only
supports a 2 digit year. Just over a dozen words need to be modified,
so an SLP file is probably the way to submit it. Naturally, the patch
includes the above modification along with checking the rest of the
year in the date word.
Is there sufficient interest in having the patch? I have not found any
interest in fixing bugs in RT-11, let alone in enhancements. Let
me know. I can also produce Y2K bug fixes for DIR, PIP, IND,
LINK, LIBR, etc.
I use a free read only server to monitor a few text only news groups.
Does anyone know of a free server that I can use to post a few times
a year to news groups? Can anyone forward a post for me instead?
I would request that you "modify" my e-mail address to prevent spam.
Sincerely yours,
Jerome Fine
EQUIPMENT LOCATION: Kent, Washington, southeast of Seattle. NO SHIPPING. LOCAL PICKUP ONLY.
Fellow techies,
Since I'm no longer in the computer collecting arena, I think this would be of more use to others who are.
I have available a huge pile (about 5 foot high by 3 or so wide) of S-100 computer stuff. There's one complete computer (a big NNC chassis with 8-inch floppies), plus a huge load of boards, documentation, extenders, an external drive cabinet, etc.
This is taking up valuable space in my garage. I would much prefer that it take up space in someone else's, preferably someone who can appreciate it. With that in mind, first person to offer me $100 for the entire lot can have it. That cost is based solely on the time, gas, and effort I spent getting the stuff home.
NO SHIPPING! LOCAL PICKUP ONLY!
I don't have the facilities or tools to ship this lot, and I'm not sure I'd want to trust any of it to FedEx Ground or whoever in any case.
-=-=-=-=-=-=-=-=-=-=-=-
Bruce Lane, Owner & Head Hardware Heavy,
Blue Feather Technologies -- http://www.bluefeathertech.com
kyrrin (at) bluefeathertech do/t c=o=m
"Quid Malmborg in Plano..."
> Date: Thu, 06 Mar 2008 07:54:50 -0800
> 9034 - S/B 9094 = Dual J-K
Argh. You have no idea how many databooks and catalogs I went
through to find that 9034--and then was perplexed as to why anyone
would carry a mask-programmed ROM as a generic part. Sigh.
At any rate, there were a lot of manufacturers making DTL that we
don't think of today. In particular, Philco:
9093 = 853
9094 = 856
9097 = 855
9099 = 852
9930 = 830
9931 = 831, etc.
800-series is the lower-cost "commercial" grade of 900-series logic
with a narrower temp range, also available in plastic DIP.
The confusing thing about DTL part numbers is how they're
"shoehorned" within the RTL part number scheme. So, a 928 is RTL,
but a 930 is DTL; A similar situation exists with the 9000 numbers.
9931 is DTL, 9989 is RTL.
A point of curiosity that I have is what was the highest level of
integration achieved before DTL was relegated to the "obsolescent"
bin? I have a couple of Fairchild addressable 8-bit memories; was
there anything more elaborate? A full adder, perhaps?
Cheers,
Chuck
Hi, all,
Has anyone here worked with or ever plotted silently to create a moderish
7-segment decoder/driver from a GAL16V8? I'm working on a project made
>from classic parts, and am trying to reduce part count rather aggresively,
since I'm going to hand-wire it.
One thought was to attempt to combine a 7490 _and_ a 7447 in a single
GAL16V8. I have blown hundreds of PALs, but have much less experience
in designing with them, so I'm not even sure that it's possible to mash
together that much logic internally in a 16V8. I know all the outputs
are optionally registered, so presuming one has 4 assignable flip-flops,
one could theoretically make a counter on the output pins, but what's
less clear to me is if you could then take those terms and internally
decode them to a 7-segment display.
After the large amounts of replies about this 8-way digital switch, I
don't necessarily want to clog the list with discissions of what is and
isn't possible for a GAL16V8, so if you can remember, please make any
suggestions and comments to me directly, not the list.
Thanks for any nudges towards a solution.
-ethan
--
Ethan Dicks, A-333-S Current South Pole Weather at 8-Dec-2007 at 15:40 Z
South Pole Station
PSC 468 Box 400 Temp -25.4 F (-31.9 C) Windchill -52.5 F (-47.0 C)
APO AP 96598 Wind 13.7 kts Grid 12 Barometer 678.8 mb (10674 ft)
Ethan.Dicks at usap.govhttp://penguincentral.com/penguincentral.html
The Curator of the Computing Collection at the (UK) Science Museum is
coming down to see it in May to see my second ICT1301 to give me a
provisional decision on whether they want to take it. If they don't,
I have found someone as mad as me, who would like to buy it, but he
want me to give him a price. My question is, how much is it worth? I
don't want to ask too much but I don't want to find something similar
is sold a couple of months later for ten times as much. I have two
bracketing values, that I bought it for 150 GBP in 1977, and that it
was sold new for 247,000 GBP in 1962, both figures plus inflation of
course. That is a somewhat wide range, and must be reduced by the
fact it is not assembled and will probably need many months work to
get it into working condition, but even as a static display it is
quite impressive. Does anyone know of any experts who could come down
and value such an unusual thing? Probably none have been sold since I
bought mine so it would have to be based on other brands or models.
Roger Holmes
At Wed, 5 Mar 2008 14:00:29 -0800 (PST), Herbert C. Williams wrote:
> But...
> Logic levels are different when using PNP transistors. IBM in its
> SMS series
> cards used "S" levels (+S and -S) which were -12 and 0volts. Commonly
> germanium transistors were PNP, and the Vcc rail was a negative
> voltage (in the
> case of SMS cards -12 volts). If you have a logic analyzer, you
> can TRY to use
> it by connecting the ground level reference to -12 volts and hope that
> something doesn't blow because the analyzer's ground is now at -12
> volts and
> logic levels go "up" from there.
My old Biomation K100 will take a +/- 50 volt signal and set
reference levels to -6.4 to +6.35 volts. This should be sufficient to
handle most logic levels out there. However, the newer logic
analyzers typically restrict the reference levels to +/- 5V at best.
Re-referencing ground still requires one to be able to set the
reference level, which in the case of the cited logic probably
requires +6 V.
[...]
CRC
> Date: Sun, 2 Mar 2008 12:09:29 -0500 (EST)
> From: Steven Hirsch <snhirsch at gmail.com>
> On Sun, 2 Mar 2008, Doc Shipley wrote:
>
>> At the risk of sounding like a broken record, MC Howard in Austin,
>> Texas
>> has been my source for everything from 74-series chips to 64-pin
>> wirewrap
>> The prices on their website are insane, but I've never heard of them
>> actually charging what's listed.
>
> Interesting. If I tripped over that website on my own, I wouldn't have
> the impression that it was worth my while to deal with them. Literally
> everything brings up a page stating "...Coming Soon".
And if you're ever in Austin, it's worth a stop by to browse the store.
It's not huge, but it's fairly large and there are many shelves of Stuff.
They also have a nice assortment of old connectors.
Take Loop 1 (AKA MoPac) to 183. Go south on 183 to Burnet Road. Take
Burnet Road north two stop lights to Longhorn. Turn left on Longhorn,
take it to the end (a few blocks) turn left again, and Howard is in the
second set of industrial buildings on the left, next to the carpeting
distributer.
Jeff Walther
I recently acquired a Western Peripherals TC130
controller set. Does anybody have any expeience with
this controller and would I be better off getting a
single board solution. I have a Cipher 1734 drive I
would like to use.
Thanks,
Brian.
> Do you have any more information on this? Is it an official
> document or something done to make a processor similar to a
> 6502? I'd like to find the guy who did it. If he had the
> CAD file then we could make a gerber.
I think it has been created from the information on this site ..
http://impulzus.sch.bme.hu/6502/
Lee.
My friends in CompSci at York have reminded me that the School of
Computer Science at the University of Manchester is organising a number
of activities "to celebrate the 60th birthday of computing"" -- that is,
to celebrate the 60th birthday of the "Baby" computer. There's to be a
computer animation festival and a public open day in June that may be of
interest to UK list members, and there's a "program the Baby" competition.
Details at http://www.cs.manchester.ac.uk/Digital60/
--
Pete Peter Turnbull
Network Manager
University of York
Don't know if this made it first time; if dupe, pls excuse.
-----Original Message:
Date: Thu, 06 Mar 2008 07:54:50 -0800
From: Bob Rosenbloom <bobalan at sbcglobal.net>
Subject: Re: Obsolete chips
dwight elvey wrote:
> Hi
> Here is a list of the DTL that Anchor has. Does anyone have
> a pinouts and types for these??
>
>
> 930
> 932
> 934
> 936
> 937
> 946
> 948
> 951
> 958
> 962
> 1800
> 9093
> 9034
> 9099
>
> Knowing what these are would help in knowing what other DTL
> numbers are the same part.
> Dwight
>
I have data sheets for the following:
930 = expandable dual 4-input NAND
932 = expandable dual 4-input buffer
934 = hex inverter
936 = hex inverter
937 = hex inverter
946 = quad inverter
948 = clocked flip-flop
951 = multivibrator
962 = quad 2-input NAND gate plus inverter
Bob
---------Reply:
Hmm, I have slightly different info:
946 = Quad 2-input NAND
962 = Triple 3-input NAND
On the other hand I can't find a 934 listed in my books...
In addition:
958 = Quad 2-input power gate
1800 = Dual 5-input NAND
9093 = Dual J-K
9034 - S/B 9094 = Dual J-K
9099 = Dual J-K
Also listed at Anchor:
935 = Hex Inverter (extendable)
949 = Quad 2-input NAND
Equivalent devices usually differ in the value of the pullup resistor
(if any):
e.g. Dual 4-input NANDs:
930 = 6K P/U
932 = 2K P/U, driver
944 = O/C, driver
961 = 2K P/U
The 935 was a 936 w/o any input diodes.
Extendable (expandable) indicated a connection that bypassed
the input diodes so that it could be externally expanded with
more diodes or an extender like the 933.
I still have some of these (maybe even some RTL) and of course the
Databooks.
Fairchild's DTL had a '9' prefix; NS used 'DM'
m
-----Original Message:
Date: Thu, 06 Mar 2008 07:54:50 -0800
From: Bob Rosenbloom <bobalan at sbcglobal.net>
Subject: Re: Obsolete chips
dwight elvey wrote:
> Hi
> Here is a list of the DTL that Anchor has. Does anyone have
> a pinouts and types for these??
>
>
> 930
> 932
> 934
> 936
> 937
> 946
> 948
> 951
> 958
> 962
> 1800
> 9093
> 9034
> 9099
>
> Knowing what these are would help in knowing what other DTL
> numbers are the same part.
> Dwight
>
I have data sheets for the following:
930 = expandable dual 4-input NAND
932 = expandable dual 4-input buffer
934 = hex inverter
936 = hex inverter
937 = hex inverter
946 = quad inverter
948 = clocked flip-flop
951 = multivibrator
962 = quad 2-input NAND gate plus inverter
Bob
---------Reply:
Hmm, I have slightly different info:
946 = Quad 2-input NAND
962 = Triple 3-input NAND
On the other hand I can't find a 934 listed in my books...
In addition:
958 = Quad 2-input power gate
1800 = Dual 5-input NAND
9093 = Dual J-K
9034 - S/B 9094 = Dual J-K
9099 = Dual J-K
Also listed at Anchor:
935 = Hex Inverter (extendable)
949 = Quad 2-input NAND
Equivalent devices usually differ in the value of the pullup resistor
(if any):
e.g. Dual 4-input NANDs:
930 = 6K P/U
932 = 2K P/U, driver
944 = O/C, driver
961 = 2K P/U
The 935 was a 936 w/o any input diodes.
Extendable (expandable) indicated a connection that bypassed
the input diodes so that it could be externally expanded with
more diodes or an extender like the 933.
I still have some of these (maybe even some RTL) and of course the
Databooks.
Fairchild's DTL had a '9' prefix; NS used 'DM'
m
> Date: Thu, 06 Mar 2008 07:54:50 -0800
> From: Bob Rosenbloom
> Subject: Re: Obsolete chips
All of the following are from the Motorola Big Brown Book:
> 930 = expandable dual 4-input NAND
...
958 - Dual 2-input NAND Power gate
1800 - Dual 5-input NAND gate
The following were obtained from a "direct replacement" chart:
9093 - Dual J-K flip flop (same as 953)
9099 - Dual J-K flip flop (same as 952)
I can find a mention in an old catalog of this one, but have no
additional information:
9034 - 256 bit ROM
Cheers,
Chuck
Hi folks,
I am looking for Omnibus core memory.
If anyone can offer me a complete memory....
But I am also interested in a BROKEN DEC H619 core stack to repair.
Best wishes,
Philipp :-)
--
http://www.hachti.de
I got around to typing in a couple of my high school basic programs from
a few old printouts.
http://rikers.org/hp2100/dnd/
Anyone care to comment on the flavor of basic it used?
This was an early version, and the instruction:
2440 PRINT "LOAD .DRAGN"
was later replaced with a CHAIN command. This was he latest printed
source I had, so I typed some in to see what folks can glean from it.
--
Tim Riker - http://Rikers.org/ - TimR at Debian.org
Embedded Linux Technologist - http://eLinux.org/
BZFlag maintainer - http://BZFlag.org/ - for fun!
I am in the process of rebuilding an IMSAI 8080 and am using my Mac Pro as a
dumb terminal. I have it all to the point where I can type a character and
see the ascii appear on the front panel. What I need to do is write a
simple 1st stage loader that will take the HEX output from the ASM80
assembler, send it over the serial connection and put it in memory. This
way I can write a more sophisticated loader and not have to key it in by
hand.
The question is, what is the algorithm, in assembly language, for converting
an ascii character to its binary equivalent. By this, I mean converting an
'a' to 1010, not 041H which is the ascii value. I remember writing such a
thing 30 years ago but simply cannot get my head around it now.
The algorithm has to deal with taking an ascii string like
AF67DBFF6FF9AF81C2130053DBFF5FAAC2210039D20600780747D3FFAF4 and converting
each ascii character into the binary value it represents. The sting above
would convert, one character at a time, to:
1010
1111
0110
0111
1101
well, you get the point...It has to work only for 0-9 and A-F which should
make it easier.
Anyone out there remember how to do this?
Jeff Erwin
>
> From: ard at p850ug1.demon.co.uk (Tony Duell)
> Subject: Logic testing
>
> I fail to see what silicon .vs. germanium has to d owith the
> polarity of
> the logic cignals. In general PNP transistors, and for that matter
> PMOS
> fets, imply -ve logic levels, and plenty of machines were built using
> those components. Also ECL chips have -ve logic levels (around -2V)
> wrt
> ground.
I bow to your greater knowledge. I was employed as a programmer and
picked up hardware later.
>
> The HP Logicdart (a handheld 3-input logic analyser) can certainly
> handle
> the PMOS logic signals in older HP handheld calculaotrs and the -15V
> logic levels in the discrete transistor circuitry of the HP9100. I
> don't
> see why it'd not work for you. And most _decent_ logic analysers (as
> opposed to the TTL-only toys...) can handle ECL levels.
>
> In cany case, I cna't believe the signals in your machine are all that
> fast. Is it not possible to make up level shifter stages to turn them
> into TTL-level sgiansl for testing?
Indeed, the clock is 1MHz, 750ns high and 250ns low, with lots of
wobbling about as the signal overshoots.
Thanks Tony, if I see a logic analyser going cheap (though that is
unlikely) I will buy it.
"Bob Brown" <bbrown at harpercollege.edu> wrote:
> Sounds like 4341 (or maybe 4331)'s (waist high, couch wide).
> They were air-cooled.
Yep - I always used to report the form factor of our 4331 (boarded in Hans Franke's warehouse in Munich) as "chest freezer". It has a big axial fan in a horizontal separator panel above the power supplies and two pairs of radial blowers on top of the logic gate - drawing ambient air in through the front grille and forcing it _down_wards through the cardcages.
So long,
--
Arno Kletzander
Student Assistant // Studentische Hilfskraft
Informatik Sammlung Erlangen
www.iser.uni-erlangen.de
Der GMX SmartSurfer hilft bis zu 70% Ihrer Onlinekosten zu sparen!
Ideal f?r Modem und ISDN: http://www.gmx.net/de/go/smartsurfer
Sorry if this is bad form - I ordinarily would not post a mention of one of
my own auctions but this is probably somewhat special. I have decided to
sell my complete 8/e system, peripherals, software, documentations, and
spares.
Ebay auction number 270217347007
Jon Miles
(note I'm not a cctalk subscriber, though I read through the archives
fairly often.)
I was informed of the following posting to the Albuquerque Craigslist
and thought people here might be interested:
http://albuquerque.craigslist.org/sys/596509820.html
-----
Older RISC hardware free to collector
Reply to: sale-596509820 at craigslist.org
Date: 2008-03-05, 12:24PM MST
We have several '90s vintage RISC computers; Decstation, VAXStation,
HP9000, Sun4, and RS6000. I think that I have media kits,
documentation, and licenses for all of them but most of it's in boxes
and I will need to check. The disks have been wiped to ensure no
corporate data goes with them.
These are obviously not speed demons, but they served us well for many
years. The boss wants me to send them off for scrap, but that seems
like a waste if there are collectors or enthusiasts who would like
them.
Free if you pick them up. I will not ship. These systems all booted and
ran when they were turned off, but the disks have been wiped and I
don't have time to test them. They are as is, where is, but they are
free.
* Location: ABQ
* it's NOT ok to contact this poster with services or other
commercial interests
PostingID: 596509820
Well belly up to the bar and show this piece that is finished and displayed
better that this item Is.........................
- Jerry
-------------- Original message from Al Kossow <aek at bitsavers.org>: --------------
> > I bet you have a nicer set there than what the Computer History
> Museum
> > has for a PDP-8!
>
> Hardly
>
> What is in visible storage is a very small fraction of the Museum's
> DEC holdings
> which includes an RF08.
>
>
>
> I bet you have a nicer set there than what the Computer History
Museum
> has for a PDP-8!
Hardly
What is in visible storage is a very small fraction of the Museum's
DEC holdings
which includes an RF08.
ebay # 160211814874
I have no idea why this went up to $300. Maybe they didn't realize it
was only a terminal and not a computer? I could be wrong of course,
but it looks virtually identical to the terminal I bought not too long
ago.
--
"The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download
<http://www.xmission.com/~legalize/book/download/index.html>
Legalize Adulthood! <http://blogs.xmission.com/legalize/>
> For those interested in a snapshot of the way BBS's were 21 years ago,
> point
> your telnet client at landover.no-ip.com
This bangs me out of putty with haste.
Does the server accept telnet on the standard port?