10 Feb
2003
10 Feb
'03
6:07 a.m.
I am looking at a chip that is causing me confusing with regards to its
actual date code.
The chip is labeled thusly:
(logo) /718
DM74157N
9322
(logo) looks something like this: /\/
/\/
...which probably makes it National Semiconductor.
My first instinct is to guess that its date code is 9322. However, it
does not fit within the context of the rest of the board, which is 1976.
They are definitely not original, as the board calls for a 74257 but the
74157 has been put in its place with the addition of a capacitor across +5
and ground.
Is it possible that the date code is actually "/718", and what I am seeing
as a slash is actually what remains of a '7' that wasn't printed
correctly?
--
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
* Old computing resources for business and academia at www.VintageTech.com *
10 Feb
10 Feb
6:51 a.m.
On Mon, 10 Feb 2003, Vintage Computer Festival wrote:
I am looking at a chip that is causing me confusing
with regards to its
actual date code.
The chip is labeled thusly:
(logo) /718
DM74157N
9322
(logo) looks something like this: /\/
/\/
...which probably makes it National Semiconductor.
My first instinct is to guess that its date code is 9322. However, it
does not fit within the context of the rest of the board, which is 1976.
They are definitely not original, as the board calls for a 74257 but the
74157 has been put in its place with the addition of a capacitor across +5
and ground.
Is it possible that the date code is actually "/718", and what I am seeing
as a slash is actually what remains of a '7' that wasn't printed
correctly?
Probably 7718 date code because 9322 is the old Faichild 9300 serial part
number for the 74157...
BTW the 157 and 257 are pretty much interchangeble if the enable pin is
grounded...
--
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
* Old computing resources for business and academia at www.VintageTech.com *
Peter Wallace
7:05 a.m.
On Mon, 10 Feb 2003, Peter C. Wallace wrote:
Probably 7718 date code because 9322 is the old
Faichild 9300 serial part
number for the 74157...
That certainly makes sense!
Thanks for the info.
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
* Old computing resources for business and academia at www.VintageTech.com *
8:09 a.m.
Sellam wrote:
I am looking at a chip that is causing me confusing
with regards to its
actual date code.
The chip is labeled thusly:
(logo) /718
DM74157N
9322
(logo) looks something like this: /\/
/\/
...which probably makes it National Semiconductor.
Yes. The "DM" prefix is also indicative of that. Most other vendors
of 7400 series parts copied the "SN" prefix from TI.
My first instinct is to guess that its date code is
9322. However, it
does not fit within the context of the rest of the board, which is 1976.
The DM74157N was also known as a DM9322, so the part is dual-marked.
They are definitely not original, as the board calls
for a 74257 but the
74157 has been put in its place with the addition of a capacitor across
+5 and ground.
The capacitor is just for additional decoupling, and doesn't change
the function of the chip. The particular board you're looking at (I
can guess what it is) was spec'd for either a 74157 or 74257.
Eric
12:56 p.m.
Yes. The "DM" prefix is also indicative of
that. Most other vendors
of 7400 series parts copied the "SN" prefix from TI.
I read somewhere (and I am not sure how accurate this is) that 'DM'
stands for Digital Monolithic, and 'SN' for Semiconductor Network. The
second is probably more likely to be correct than the first..
-tony
1:29 p.m.
Tony wrote:
I read somewhere (and I am not sure how accurate this
is) that 'DM'
stands for Digital Monolithic,
National Semiconductor databooks from 1975-1976 give explanations of
some of the prefixes:
AH - Analog Hybrid
DM - Digital Monolithic
DS - Digital Special
LH - Linear Hybrid
LM - Linear Monolithic
MH - MOS Hybrid
MM - MOS Monolithic
There was also one for transducers, and maybe a few others I've
forgotten.
Note that there are some anomalies in the numbering. For instance,
the MH0025 and MH0026 MOS clock drivers apparently used the MH prefix
because they were used for *driving* MOS parts, not because they
were constructed using MOS. They were then redesigned as monolithic
parts, but given a DS prefix.
and 'SN' for Semiconductor Network. The
second is probably more likely to be correct than the first..
That's the first time I've seen any explanation for a TI prefix.
5:56 p.m.
At 04:26 PM 2/10/03 -0800, Eric Smith wrote:
I concur with 'SN' standing for 'Semiconductor Network.'
From the book "TI Series 54/74 Integrated Circuits", 1966 edition,
the Series 54 Bulletin no. DL-5 657921 (August 1965) is
entitled "Series 54 Solid Circuit Semiconductor Networks" where
"Solid Circuit" is Registered (R) and "Semiconductor Networks"
is footnoted as "Patented by Texas Instruments."
By the way, the book notes that the first integrated circuit that TI
produced was the SN502 in 1960, using mesa (rather than planar)
technology.
Speaking of old ICs, this past weekend at a hamfest I picked up
some old integrated circuits, including a couple of old processors
on ceramic plates, two types of 1702 EPROMS, and a couple
of mystery chips.
I've got some photographs of them up at
http://www.decodesystems.com/old-ics.html
I also ended up with three HP 5082-7300 LED BCD displays.
A Google search indicated at least one supplier, but with a
price of more than $40! Does anyone have an idea what the
average retail price of these displays were back when HP was
still manufacturing them?
Cheers,
Dan
www.decodesystems.com/wanted.html
and
'SN' for Semiconductor Network. The
second is probably more likely to be correct than the first..
That's the first time I've seen any explanation for a TI prefix.
12:56 p.m.
I am looking at a chip that is causing me confusing
with regards to its
actual date code.
The chip is labeled thusly:
(logo) /718
DM74157N
9322
(logo) looks something like this: /\/
/\/
...which probably makes it National Semiconductor.
Yes.
My first instinct is to guess that its date code is 9322. However, it
My first guess to... However, 9322 is also a Fairchild TTL number, IIRC,
a quad 2 input mux (which is what the '157 is).
does not fit within the context of the rest of the
board, which is 1976.
They are definitely not original, as the board calls for a 74257 but the
74157 has been put in its place with the addition of a capacitor across +5
and ground.
Hmm.. the '157 and '257 are both quad 2 input mux chips with the same
pinout. The difference is that the '257 has 3-state outputs, the '157
doesn't. The pin (15) that handles output enable on the '257 (forces all
outputs to the high impedance state), just forces all outputs low on the
'157.
If this pin is tied to ground then the 2 chips are equivalent. What
worries me is that in 1976 thw '257 was a lot less common than the '157,
so it wouldn't have been specified unless the 3-state capability was
used.
Of course it was common to find '157s with the enable tied low (asserted)
(most of the time being able to force the outputs low was not that
useful), in which case a '257 would replace them. But in my experience if
a '257 was specified, there was a reason for it.
Is it possible that the date code is actually "/718", and what I am seeing
as a slash is actually what remains of a '7' that wasn't printed
correctly?
May be just 718, meaning 1977, week 18 or something.
-tony
11 Feb
11 Feb
2:37 a.m.
New subject: dongle !
hello, i search a dongle for a "Avid XpressDV" program. where can i found
it?
15 Feb
15 Feb
2:10 a.m.
New subject: dongle !
i know that ! can you say me where i can find some one, or a dongle crack?
thanks
----- Original Message -----
From: "Bob Shannon" <bshannon(a)tiac.net>
To: <cctalk(a)classiccmp.org>
Sent: Saturday, February 15, 2003 2:06 AM
Subject: Re: dongle !
They are individually keyed to the software licensse.
Good luck!
Jo?l Weber wrote:
>hello, i search a dongle for a "Avid XpressDV" program. where can i found
>it?
7:30 a.m.
New subject: dongle !
You could always go out and *buy* the software.
g.
On Sat, 15 Feb 2003, [iso-8859-1] Joël Weber wrote:
i know that ! can you say me where i can find some
one, or a dongle crack?
thanks
----- Original Message -----
From: "Bob Shannon" <bshannon(a)tiac.net>
To: <cctalk(a)classiccmp.org>
Sent: Saturday, February 15, 2003 2:06 AM
Subject: Re: dongle !
> They are individually keyed to the software licensse. Good luck!
>
> Joël Weber wrote:
>
> >hello, i search a dongle for a "Avid XpressDV" program. where can i
found
> >it?
8:45 a.m.
New subject: dongle !
give you me yhe money !
----- Original Message -----
From: "Gene Buckle" <geneb(a)deltasoft.com>
To: <cctalk(a)classiccmp.org>
Sent: Saturday, February 15, 2003 7:34 PM
Subject: Re: dongle !
You could always go out and *buy* the software.
g.
On Sat, 15 Feb 2003, [iso-8859-1] Jo?l Weber wrote:
> i know that ! can you say me where i can find some one, or a dongle
crack?
> thanks
> ----- Original Message -----
> From: "Bob Shannon" <bshannon(a)tiac.net>
> To: <cctalk(a)classiccmp.org>
> Sent: Saturday, February 15, 2003 2:06 AM
> Subject: Re: dongle !
>
>
> > They are individually keyed to the software licensse. Good luck!
> >
> > Jo?l Weber wrote:
> >
> > >hello, i search a dongle for a "Avid XpressDV" program. where can
i
found
> > >it?
8:10 p.m.
New subject: dongle !
On Sat, 15 Feb 2003, [iso-8859-1] Joël Weber wrote:
give you me yhe money !
I'm going to assume that means "give me the money". Not bloody likely.
Earn it like the rest of us. :)
g.
----- Original Message -----
From: "Gene Buckle" <geneb(a)deltasoft.com>
To: <cctalk(a)classiccmp.org>
Sent: Saturday, February 15, 2003 7:34 PM
Subject: Re: dongle !
You could always go out and *buy* the software.
g.
On Sat, 15 Feb 2003, [iso-8859-1] Joël Weber wrote:
> i know that ! can you say me where i can find some one, or a dongle
crack?
> > thanks
10:06 a.m.
New subject: dongle !
hello, i'm sorry !
that what i hd would say is:
some one hd me give the ORIGINAL software, but in this, the dongle wasn't !
so, my question, was :
can some one frou you, say me where i can BUY a dongle, for the AVID XPRESS
DV ?
all my programs, are ORIGINALS ! i haven't a pirate copy!
joel
10:15 a.m.
New subject: dongle !
say me where i can BUY a dongle, for the AVID XPRESS
DV ? all
http://www.avid.com/products/howtobuy/index.html
10:30 a.m.
New subject: [OT] Re: dongle !
Jo?l Weber wrote:
some one hd me give the ORIGINAL software, but in
this, the dongle
wasn't !
OK, sorry I jumped on you about copying. But it's still of-topic for
this list.
Anyhow, I don't think there's any way to get one other than from
the manufacturer. If Bob is right, getting a second-hand dongle won't
work for you anyhow.
8:13 p.m.
New subject: dongle !
hello, i'm sorry !
that what i hd would say is:
some one hd me give the ORIGINAL software, but in this, the dongle wasn't !
so, my question, was :
can some one frou you, say me where i can BUY a dongle, for the AVID XPRESS
DV ?
all my programs, are ORIGINALS ! i haven't a pirate copy!
Have you bothered to contact Avid? They'd be happy to sell you one.
g.
16 Feb
16 Feb
9:38 a.m.
New subject: dongle !
Call AVID.
Was that so hard to think of?
Jo?l Weber wrote:
hello, i'm sorry !
that what i hd would say is:
some one hd me give the ORIGINAL software, but in this, the dongle wasn't !
so, my question, was :
can some one frou you, say me where i can BUY a dongle, for the AVID XPRESS
DV ?
all my programs, are ORIGINALS ! i haven't a pirate copy!
joel
15 Feb
15 Feb
9:42 a.m.
New subject: [OT] Re: dongle !
Jo?l Weber wrote:
hello, i search a dongle for a "Avid
XpressDV" program. where can i
found it?
Joel later wrote:
i know that ! can you say me where i can find some
one, or a dongle
crack? thanks
Look, did I miss something here, or is this *seriously* off topic?
I don't know anything about Avid XpressDV, except that a Google search
suggests that it's a currently sold product. So it fails that 10-year
test.
Whether to copy out-of-print software without the owner's permission
is perhaps a reasonable subject for debate. But IMNSHO it is *extremely*
tacky to use this list to ask for "cracks" for currently sold products.
If I were the owner of the list, it would be grounds for expulsion.
(Fortunately I'm not.)
I'm not going to try to take a moral high ground and claim that I've
never made unauthorized copies of software (whether it was still
commercially available at the time or not). In fact, I'll admit that
in my youth I did a lot of that. However, I didn't ask for cracks in a
public forum, and especially not one for which that software is totally
off-topic anyhow.
Eric
7908
days inactive
7914
days old
20 comments
10 participants
participants (10)
-
ard＠p850ug1.demon.co.uk -
bshannon＠tiac.net -
dan＠ekoan.com -
eric＠brouhaha.com -
foo＠siconic.com -
geneb＠deltasoft.com -
joe_web＠worldonline.fr -
pcw＠mesanet.com -
tim.myers＠sunplan.com -
vcf＠siconic.com