Hi
I did some searches. First I found a company
that is listed as having DTL devices form one of those
master list of companies:
http://www.mathiselectronics.com/
The only thing is that they do not list them on their
web page.
A little nore in depth search ( remembering that I might
have actually posted information to this group in the past )
revealed:
http://lansdale.com/homeprod.htm
Of course, I was wrong, they were in Arizona and not Texas
( it was the desert that fooled me ). They have quite a
listing of DTL parts in the Motorola section. If anyone
does contact them for prices, could they let me know?
I see they have a minimum $1000 order.
Dwight
>From: "Dwight K. Elvey" <dwightk.elvey(a)amd.com>
>
>Hi
> By the way, there is a company in Texas some place that
>is actually making DTL and most likely RTL as well. They
>make parts for obsolete equipment. I've lost the url
>but I found it with a search on the web. I was always
>afraid to even ask what they were charging for the
>parts ( most were mil spec as well ).
>Dwight
>
>
>>From: "Arlen Michaels" <arlen(a)acm.org>
>>
>>on 31/7/02 3:12 PM, Ethan Dicks at erd_6502(a)yahoo.com wrote:
>>
>>> I am looking for some DTL chips to make a repro W706/W707 TTY
>>> interface set for my Straight-8 and PDP-8/S (got *no* serial
>>> I/O for them. :-( )
>>>
>>> http://www.pdp8.net/w-boards/pics/w706.shtml?small
>>> http://www.pdp8.net/w-boards/pics/w707.shtml?small
>>>
>>> The chips there are:
>>>
>>> W707
>>> MC799 Dual Power Buffer (1)
>>> MC790 Dual J-K Flip-Flop (8)
>>> MC724 Quad Input Gate (5)
>>> MC789 Hex Inverter (5)
>>> W706
>>> MC790 Dual J-K Flip-Flop (9)
>>> MC789 Hex Inverter (6)
>>> MC724 Quad Input Gate (5)
>>> MC799 Dual Power Buffer (1)
>>
>>The MC7xx were RTL, not DTL. Motorola made them. They typically used a
>3.6
>>volt power supply, like the Fairchild uL9xx RTL series of the same era
>(late
>>'60s I think).
>>
>>Arlen Michaels
>>
>>
>
>
>
Yes, they are 80x24. I plan to scan one of them for netposterity. :)
Will post link when I get it done.
Anyone know where the genesis of 80x24/40x24 screen dimensions (and quite
a few other devices) has its origination in? I remember my old dot matrix
epson used to be 80 columns wide, and most of the older 8 bit computers
had 40 or 80 cols by 24 or 25 rows. "But why?" he cried...
Regards,
Louis
From: "Richard Erlacher" <edick(a)idcomm.com>
To: <cctalk(a)classiccmp.org>
Subject: Re: Fortran Coding Form Pads...
Date: Sat, 27 Jul 2002 21:45:07 -0600
Organization: Erlacher Associates
Reply-To: cctalk(a)classiccmp.org
Are these the ones with 24 lines of 80 columns? Several major vendors
modeled their coding forms after the U.S. military coding forms,
presumably cooked up by the Navy. I've only seen the blue ones, (blue
lines) which I presume were patterned after the USAF ones. They worked
great for coding when the work product was going to that huge room full of
mini-skirted (back then) keypunch operators. (I'd have given a week's
pay for a couple of hours hours to fish around in that room ... <sigh> ...
)
I did, BTW, code in Fortran back then.
Dick
Hello, all:
I have another C issue that I can't seem to see the answer for, so I
thought I'd throw it out to the masses.
I'm deep into the Altair 680b emulation project (base code done,
working on telnet access) and I'm experiencing problems reading a file
stream into the memory array. Here's snippets of the code:
<SNIP>
byte *ppmem ; // pointer into memory array
byte ucMem[3*65536] ; // actual memory-see defines below for usage
// roms[] is an array of structures defining start-time loaded ROMs. Only
one ROM now
//(the monitor PROM), but flexible enough to allow bank-switched ROMs (not
applicable
//in the 680b but a leftover from the 6800 processor emulation code that was
borrowed
//for the project)
//
//MEM_xxx are defines for the offset into the ucMem array to various areas
#define MEM_RAM 0
#define MEM_ROM 0x10000
#define MEM_FLAGS 0x20000
FILE *pFH ;
// open file, etc.
//create while loop to walk through roms[] array
// Read ROM directly to memory. This works.
ppmem = &ucMem[roms[i].iROMStart + MEM_ROM] ;
fread(ppmem, sizeof(byte), roms[i].iROMLen, pFH) ;
//this doesn't work...
//fread(&ucMem[roms[i].iROMStart + MEM_ROM], sizeof(byte), roms[i].iROMLen,
pFH) ;
//...nor does this
//fread((char *)ucMem[roms[i].iROMStart + MEM_ROM], sizeof(byte),
roms[i].iROMLen, pFH) ;
// Set flags for ROM
memset(&ucMem[roms[i].iROMStart + MEM_FLAGS], 1, roms[i].iROMLen) ;
</SNIP>
So here's where I'm missing it. Under all three fread scenarios, the
compiler doesn't throw a warning...they all compile cleanly. But only the
first works.
This sounds like one of those "What's the Bug" ads from DDJ. What am
I missing?
Rich
Erik:
No errors or warnings are emitted by the compiler, so the way I'm
determining that the various functions work or not work is by looking at a
"core dump" of the emulator memory (performed by another routine). In all
but the first example, the memory is empty (they remain the initialized
value of 0). The first way, the emulator memory indeed shows the contents of
the loaded ROM.
I've "watched" the contents of the roms array and have also
outputted the values to the debug screen. The values are as expected.
Rich
-----Original Message-----
From: Eric J. Korpela [mailto:korpela@ssl.berkeley.edu]
Sent: Thursday, August 01, 2002 12:34 PM
To: cctech(a)classiccmp.org
Subject: Re: C question
> // Read ROM directly to memory. This works.
> ppmem = &ucMem[roms[i].iROMStart + MEM_ROM] ;
> fread(ppmem, sizeof(byte), roms[i].iROMLen, pFH) ;
>
> //this doesn't work...
> //fread(&ucMem[roms[i].iROMStart + MEM_ROM], sizeof(byte),
roms[i].iROMLen,
> pFH) ;
>
> //...nor does this
> //fread((char *)ucMem[roms[i].iROMStart + MEM_ROM], sizeof(byte),
> roms[i].iROMLen, pFH) ;
>
> So here's where I'm missing it. Under all three fread scenarios, the
> compiler doesn't throw a warning...they all compile cleanly. But only the
> first works.
Lack of warnings or code don't have anything to do with whether the code
is correct...
The last one is the easiest to figure out....
Call fread with the following parameters:
1. byte value at address (ucMem+roms[i].iROMStart+MEM_ROM) converted into
a pointer to type char.
2. The value 1 (assuming byte is typedefed to "unsigned char")
3. The value stored in roms[i].iROMLen
4. The value stored in pFH.
It's fairly easy to see why the first parameter is wrong... No warning is
issued because the type of the first parameter is correct. Without the
typecast, a warning should be issued.
The previous two look equivalent to me. I don't really see a significant
difference. Are you sure "i" and "roms" are set to what you think it should
be.
Personally, I would have written the first parameter as
"ucMem+roms[i].iROMStart+MEM_ROM" as I think it more clearly represents
what you mean.
What is the error reported? What are the return values from fread? (You
should be checking that the return value equals roms[i].iROMLen.)
Eric
On Thu, Aug 1, 2002 6:00 pm, "Tom Owad" <owad(a)applefritter.com>wrote:
>I've got a couple of 128's that act as shelf supports for some of my
>Commodore equipment - so I guess you could say that they are "still in
>use" :-)
Hi all. I have just subscribed. I have the following equipment. BBC Micro.
32k, Apple II+ 48k, Apple IIc, Macintosh Classic 4/80, Amiga A500,
Macintosh LC II with Apple IIe card, Macintosh iMac Bondi Blue.
Of all these only the iMac is in regular use. The LC II is sitting on the
floor beside me. It is semi in use. Or rather it is ready for use to
connect to the Internet should the iMac need to be sent for service (this
has happened twice since I have had it). The other computers are all in the
cupboard under the stairs. All are in working order, or were in working
order.
Projects I have done are:
1. Connected the Apple II to the BBC Micro using the games socket on the
Apple and transfered data successfully. (hard)
2. Connected the BBC Micro to the Amiga and transferred data to a BBC
Micro emulator program which runs on the Amiga.
3. Downloaded disk images off the Internet using the Mac Classic and
transferred them to the Apple IIc using Mac ADT.
3. Connected the Apple II to the Amiga using serial card without
instructions. Card is marked 7710A (hard)
4. Transferred data to the iMac from the LC II via the Internet.
5. Connected the LCII to the internet. (Easy)
a) browsed the internet with Mac web (slow)
b) used Eudora for email
c) Claris emailer seems better
6. Connected the Mac Classic to the Internet using S7.1 and S7.5.5
7. Printed on Epson Stylus Color 740 from LC II. (Easy, send disk images
of 68k version of printer driver which is on Bondi iMac's install CD).
8 Connected to Lost Gonzo using Cyberdog. Any telnet client will do. Is
here:
telnet://lost-gonzo.com
Projects I have not been able to do.
1. Connect any Macintosh running System 6 to the internet
2. Connect a 5.25 Disk II drive to the LC II card
http://home.swbell.net/rubywand/Csa2FDRIVE.html
>ISTR doing that with MacTCP 1.x (an addon install, not included
>in System 6) and a SCSI<->Ethernet box. I'm fairly certain that
>the ethernet box came with System 6 drivers, but if someone here
>knows that it flat-out can't be done, then I'm probably mistaken.
>I have never tried it with dial-up, if that's what you mean.
I don't recall if I have ever personally done it... but I see no reason
it CAN'T be done. There are MacTCP drivers for System 6, and at least the
Asante SCSI->Ethernet box has System 6 drivers available.
There are also System 6 drivers for the Farallon Etherwave
localtalk->ethernet adaptor, however, the Etherwave doesn't support
TCP/IP (limit of the Appletalk, not of the etherwave), so you have to use
MacIP (TCP/IP wrapped in AppleTalk), and a MacIP to TCP/IP bridge (like
IPNetRouter running on another Mac). And again, I see no reason it can't
be done.
-chris
<http://www.mythtech.net>
>I like BIG, HEAVY, INDUSTRIAL watches, so none of those effeminate
>little dressy things!
It isn't really gadgety... but I feel I need to say it anyway. DO NOT buy
a Pulsar Spoon watch.
They are more on the "dressy" side, but they are definitly big and
heavy... and they suck royal ass!!!
A friend of mine talked me into buying one (he used to sell them at an
upscale watch store, the place had things like Movado's and Rolex, and a
typical watch there was $4,000). I wanted a digital watch that went
against the norm and had a black display with highlighted numbers rather
than the norm grey/white display with shadowed numbers.
The spoon has that (black display, with a red light to illuminate the
numbers... display looks very much like an old LED TI calculator). It was
one of the cheapest watches they sold there at $160.
It broke about a month after I got it (light stopped working... and you
NEED the light to see the display). It went back, was repaired (after
about a 6 week wait). Then about 3 or 4 months later... broke again...
went back again, was repaired (another 6 weeks). Repeat as needed.
It has been back 4 times total... and as of right now, the light turns on
when you just brush the watch, and all other buttons work when they want
to. When I bitched to my friend that the watch sucks shit... he told me
"What do you expect for a $160 watch"... oh, I don't know... for $160 I
expect it will offer me head!
I am in the process of digging out my $20 Casio that I had prior... it
also had a black display (with grey numbers), and unlike this attractive
peice of shit on my wrist now... it worked just fine.
-chris
<http://www.mythtech.net>
> From: McFadden, Mike
>
> I'm tired of bothering you'll with the mime junk. My clueless helpdesk
> can't help. I don't use address books. I'm forced to use outlook. How
> do I set all of my messages to plain ASCII? I've tried google searches and
> even read the book at the library, I'm still sending MIME. I tried just
> lurking but I want to contribute.
>
> Thanks
> Mike
> mmcfadden(a)cmh.edu
>
You're using it on a PC, right? Well, on a per-message basis, you
can change it under the Format menu, then select Plain Text. For all new
outgoing messages, it's under Options, the IIRC, Mail format...
--
--- David A Woyciesjes
--- C & IS Support Specialist
--- Yale University Press
--- (203) 432-0953
--- ICQ # - 905818
Mac OS X 10.1 - Darwin Kernel Version 5
Running since 01/22/2002 without a crash
I'm tired of bothering you'll with the mime junk. My clueless helpdesk
can't help. I don't use address books. I'm forced to use outlook. How do
I set all of my messages to plain ASCII? I've tried google searches and even
read the book at the library, I'm still sending MIME. I tried just lurking
but I want to contribute.
Thanks
Mike
mmcfadden(a)cmh.edu
Hi
By the way, there is a company in Texas some place that
is actually making DTL and most likely RTL as well. They
make parts for obsolete equipment. I've lost the url
but I found it with a search on the web. I was always
afraid to even ask what they were charging for the
parts ( most were mil spec as well ).
Dwight
>From: "Arlen Michaels" <arlen(a)acm.org>
>
>on 31/7/02 3:12 PM, Ethan Dicks at erd_6502(a)yahoo.com wrote:
>
>> I am looking for some DTL chips to make a repro W706/W707 TTY
>> interface set for my Straight-8 and PDP-8/S (got *no* serial
>> I/O for them. :-( )
>>
>> http://www.pdp8.net/w-boards/pics/w706.shtml?small
>> http://www.pdp8.net/w-boards/pics/w707.shtml?small
>>
>> The chips there are:
>>
>> W707
>> MC799 Dual Power Buffer (1)
>> MC790 Dual J-K Flip-Flop (8)
>> MC724 Quad Input Gate (5)
>> MC789 Hex Inverter (5)
>> W706
>> MC790 Dual J-K Flip-Flop (9)
>> MC789 Hex Inverter (6)
>> MC724 Quad Input Gate (5)
>> MC799 Dual Power Buffer (1)
>
>The MC7xx were RTL, not DTL. Motorola made them. They typically used a
3.6
>volt power supply, like the Fairchild uL9xx RTL series of the same era
(late
>'60s I think).
>
>Arlen Michaels
>
>
>One disturbing trend nowdays is that 99% of the computers
>come with out any software or manuals. Sure you can get that
>machine for $10 but if the OS is bad or you want to install
>software you are out of luck.
True on a general note, but at least with the SE/30 referenced, you can
get System 6.0.8 from Apple's web site, as well as System 7.5.3 (and the
.5 updater). Which means, really, you can fairly easily get that SE/30
resetup with an OS.
And then there is NetBSD which runs on the SE/30 pretty happily (or so I
have been told... personally, every time I get to the point of booting,
something else on my SE/30 breaks, no fault of NetBSD... just a nasty
string of coincidence). NetBSD is of course a free download as well.
-chris
<http://www.mythtech.net>
Speaking of odd screen widths, the Osborne I was 52 characters wide. With
the 80-column upgrade, you could also get 104 characters on the Osborne's
tiny screen. (Using 60-character lines in WordStar, the screen would
jump-scroll whenever you reached the last part of a line -- a rea PITA.
Until I got the 80-column upgrade, I would write using a 50-character line
and reformat to 60 before printing.)
-----Original Message-----
From: ard(a)p850ug1.demon.co.uk [mailto:ard@p850ug1.demon.co.uk]
Sent: Thursday, August 01, 2002 6:19 PM
To: cctalk(a)classiccmp.org
Subject: Re: Fortran Coding Form Pads...
>
>
> Certainly, screen dimensions were modelled after punched cards: There
> were 80 columns on a punched card, and once everybody was used to that
> line length, it was an obvious choice to make the screen just as wide -
> except for a couple of clever guys who made the screen 64 columns wide,
> which happens to be a power of two.
I've seen 132 column screens too (why 132???) but did anyone ever try to
make a 128 column screen (or printer)? It would seem to be a logical size
to make it, but I've never seen one.
-tony
*Drool*
I'd kill for a DN300 or 330 or any model of Apollo... especially a
DN10000... hehe...
Will J
_________________________________________________________________
Send and receive Hotmail on your mobile device: http://mobile.msn.com
FYI the last year of large-size dollar bills (and larger denominations), was
1923. I personally own a Series 1923 1 Dollar bill and would be willing to
scan it and measure it if there is interest...
Will J
_________________________________________________________________
Send and receive Hotmail on your mobile device: http://mobile.msn.com
Hello everybody !
A Micropolis 8" HDD (1222-i), I got 1 year ago and anaother Quantum 8" drive
(Q2020) are equipped with a SA1000 Interface. I'd like to test (and save)
them but I don't know wich systems support that kind of interface.
Does anybody know any systems, which support these drives ?
I found manuals for the Quantum drive but I found nothing for the Micropolis
drive on google. What is the configuration for the power connector ?
Thanks alot for any help !
Pierre
--
GMX - Die Kommunikationsplattform im Internet.
http://www.gmx.net
Bare card, no memory chips (takes 44256 DRAM).
Anyone need one?
Lee.
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>I'm certainly up for a 33 and a 35. And I can pick up, if they're local to
>NYC...
William's warehouse is in Paterson NJ, so about 20-30 minutes from NYC.
However, I think he is only there during the day, during the week.
If you can't work with that schedule, if William lets me go back, I can
grab you a 35 and stick it in my storage garage, but you will have to
pick it up before the end of August (my rental price doubles starting in
Sept, so I plan to have everything out before then). My garage is in
Ho-Ho-Kus NJ, which is also about 20-30 minutes from NYC. But I have 24x7
access to the garage, and since I live about 10 blocks from it (and work
about 10 blocks the other direction from it), I can meet you there pretty
much any day or time for pickup.
Of course, I have to figure out how to get a 35 back out of my van and
into my garage all by myself... that will be a serious challenge.
Chris,
Appreciate it. A 35 would be most cool. Hopefully I can get out there myself
to help you pick it up - or just pick it up myself. (let's take the
logistics off-list). I would also go for a 33 - I don't have a working one
this side of the pond. If the price were halfways reasonable I'd take one of
the 'new' 33s that were mentioned a few posts back!
Cheers
Mike
http://www.corestore.org
_________________________________________________________________
Chat with friends online, try MSN Messenger: http://messenger.msn.com
My Gods.
A responsible vendor. I am agog.
I snarked an RRD46 (12x CD) drive off eBay a couple of weeks ago. It
came in today, except it says RRD45. :(
Like I wanted another 4x CD drive.
I fired of a reasonably polite, low-intensity complaint to the seller,
and less than an hour later, got an apology, an offer of a full refund
including shipping or replacement if they still have an RRD46, and an
offer, if I pay for the return shipping, to give me "extra" credit on
any future purchase. Which I'm likely to do.
I've been fighting off a client who thinks his 5 grand for a solid
week's work entails lifetime support & handholding, not to mention
training of his dweebs.
All week I've been trying to get NextCard to quit hitting my bank with
a completely unauthorized $125 direct withdrawal. They admit it's
entirely their fault, but insist that they can't stop the withdrawal!
They say _I_ have to put a stop on the charges at the bank. Meanwhile,
they are adding charges to my credit card for late payment and
over-limit, because they have the payment I did authorize, and which
did clear the bank, on hold. Because there's a "dispute". I'm up three
levels of their complaint desk, and have yet to speak to anyone who
admits to any peculiarity in their actions. "But we already promised to
pay the INS fees and the stop payment at your bank!" But not the late
fees, nor my time off work, nor the expense of faxing them all the
documentation. I can't even get a solid promise to drop all _their_
extra charges, incurred because THEY screwed up!
I'd much rather "twmaster", the eBay dealer, had sent me the right
thing to start with. But it's damn nice for somebody to own up to their
shit, and make good on it.
Doc
>From: "Kent Borg" <kentborg(a)borg.org>
>
>Teletypes in New Jersey, and I am in Boston. Damn.
>
>-kb
>
Hi
Maybe we could get someone that is in the area to
deal with shipping various items ( for a small overhead ).
I could use a few items myself, for a 33. Of course
an entire machine would make a good spare but shipping
cost a lot and they really are too heavy to put in
a cardboard box ( that is why I need some parts ).
Is there anyone in the area that could work as a middle
man?
Dwight
wish list:
1. Outside plastic case for a asr33.
2. Tape reader latch or spare reader.
3. Power module for a tape reader.
Hi
I'm always looking for DTL chips. Finding these
would be great. Anyone with some of these hiding
away or some old surplus board with them on it,
I'd be interested. I forget the numbers I need
but one is a open collector nand ( something like
935? but that sounds like a RTL). I'll have to make
list.
Dwight
>From: ard(a)p850ug1.demon.co.uk
>
>> > If this is the head lock solenoid, do you get any voltage across it
when
>> > the drive is attempting to spin up?
>>
>> I think I did get voltage on that connector when it seemed to pull in.
>> I'll have to double check though.
>
>Yes, please do. We'll both feel right idiots if we spend time looking in
>the servo circuitry and that real reaso the heads can't move is becuase
>they're locked.
>
>> > Unless you have a clean box, I would do a few more checks outside the
>> > HDA first
>>
>> Well, ok :P
>
>It's up to you, it's your drive. And don't you think the HDA has been
>opened before? If that's the case, then it might not do any more daamge
>to pull the cover again.
>
>-tony
>
>
Hi
I haven't been following this thread but I thought I'd add:
When working inside of disk drives, wear a mask ( the ones
you get from the drug store work fine ). Also, don't
work in a room that has had someone smoking or while
someone is frying stuff in the kitchen.
Most dust particles are large enough that the head just
kicks it of into the filter. Smoke particles are the
right size to cause head crashes, as is a little
bit of spittle from a sneeze or speech.
Also, don't rotate the disk backwards, the heads will
cut into the surface and damage them.
Dwight
>I'm certainly up for a 33 and a 35. And I can pick up, if they're local to
>NYC...
William's warehouse is in Paterson NJ, so about 20-30 minutes from NYC.
However, I think he is only there during the day, during the week.
If you can't work with that schedule, if William lets me go back, I can
grab you a 35 and stick it in my storage garage, but you will have to
pick it up before the end of August (my rental price doubles starting in
Sept, so I plan to have everything out before then). My garage is in
Ho-Ho-Kus NJ, which is also about 20-30 minutes from NYC. But I have 24x7
access to the garage, and since I live about 10 blocks from it (and work
about 10 blocks the other direction from it), I can meet you there pretty
much any day or time for pickup.
Of course, I have to figure out how to get a 35 back out of my van and
into my garage all by myself... that will be a serious challenge.
-chris
<http://www.mythtech.net>
In a message dated 7/31/2002 2:01:18 PM Central Daylight Time,
foo(a)siconic.com writes:
<< Does anyone here still use their old (say pre-1990) Macintosh as a regular
practice?
Sellam Ismail
Well, it's not old enough, but I finally had success in getting a Quadra 800
with PPC card up and running on my network and through the router for net
access. Pretty neat machine. I presume earlier macs with ethernics and system
7.x would be similar.
NOTE: if you use ASANTE NICs, I found out that they don't always like to
establish a connection with a 100mb hub/router. To get this mac working, I
had to plug it into a 10mb hub, and then into the router.
Not really. According to http://www.railway.org/railroadgauge.htm, one of
several railroad gauges used in England by George Stephenson, and the one
that became popular in the US (over the objection, in a way, of President
Lincoln, who proposed a 5' gauge), was based on a 5 foot spacing of cart
wheels. Subtracting 2 inches for each rail gave 4'8". Stevenson later
widened the spacing by 1/2" because (for unspecified reasons), that worked
better.
See also A.W. Worth's reported comments in
http://www.spikesys.com/Trains/st_gauge.html; and
http://www.straightdope.com/columns/000218.html
-----Original Message-----
From: Sellam Ismail [mailto:foo@siconic.com]
Sent: Wednesday, July 31, 2002 5:14 AM
To: cctalk(a)classiccmp.org
Subject: OT: Horse's ass
<snip>
So it is not myth.
Sellam Ismail Vintage Computer
Festival
----------------------------------------------------------------------------
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* Old computing resources for business and academia at www.VintageTech.com
*