> From: Mouse
> As for buffer overruns, the point there is that a buffer overrun
> clobbers memory addressed higher than the buffer. If the stack grows
> down, this can overwrite stack frames and/or callers' locals.
Oh, right. Du! Buffers typically grow upward, no matter which
> On Mar 17, 2016, at 9:15 PM, Eric Smith wrote:
>
> On Thu, Mar 17, 2016 at 3:35 PM, Guy Sotomayor wrote:
>> I’m planning on doing a 4 layer board so I can avoid having routing issues
>> due to 3 different
>> power supply voltages (yea, modern low voltage design meets 5v). I haven’t
>> done
On 03/16/2016 07:07 PM, Jason T wrote:
On Mar 16, 2016 20:47, "Chuck Guzis"
I rarely keep originals, but copy them and return them to the
original
owner. If you're interested, I can dig a disk or two out and list
the contents.
Sure, or a 22disk image, if you think you have the same disk I do
Sorry, Sergio, can't quite swing that. :-)
On Mon, Mar 14, 2016 at 12:41 AM, SPC wrote:
> No doubt, dude. Can anyone go to take a lunch?
> Sergio.
>
> 2016-03-14 6:43 GMT+01:00 CuriousMarc :
>
> > Awesome!
> > Marc
> >
> > -Original Message-
> > From: cctalk [mailto:cctalk-boun...@class
Glad this came back up.
Was any consensus achieved, regarding the use of `flameproof` resistor
types as direct substitutes for designated "fusible resistors"?
On Thu, Mar 17, 2016 at 7:44 PM, Adrian Graham wrote:
> On 17/03/2016 22:46, "Vincent Slyngstad" wrote:
>
> > From: Josh Dersch: Thursd
> >
>
>
> I am not 1/2 as knowledgeable as others here, but what comes to mind is
> "backplane change",
You mean that I have to do modifications to the backplane. No, that is not
what I want...
> I think you'd leave the M930 where it is and on the 2nd
> backplane segment install the M9301. If
On Fri, 18 Mar 2016, Mike Ross wrote:
I just have the controller board; I don't have any of the hard drives
left. All I remember is the disk was an 8" and the interface is a
single 40-pin cable; so not SMD and not SCSI. Far too early for IDE or
ATA. Any suggestions for what the interface might ha
> From: Charles Anthony
> Slightly at cross purposes here; I was speaking of porting Multics; you
> are speaking of writing a Multics like OS. I was opining that I don't
> think that porting would work due to Multics reliance on very specific
> VM features.
Yes; my un-stated a
On 18 March 2016 at 15:13, Liam Proven wrote:
> Since I've been playing with my new Raspberry Pi 3 today, I was
> thinking one of those might make a convenient host system. A USB <=>
> RS-232 convertor is probably the easiest way.
>
I can do that too :)
--
adrian/witchy
Owner of Binary Dinosa
Hi all --
Yesterday I replaced the dead 2N6547 transistor in the H7104 and fired
'er up again. Same exact results. (The timbre of the power supply
whine may have changed slightly, it's hard to tell). So, back to the
drawing board. I tested the replacement transistor after power-up and
it
On 17/03/2016 22:46, "Vincent Slyngstad" wrote:
> From: Josh Dersch: Thursday, March 17, 2016 3:34 PM
>> It's listed in the print set as a 1 Ohm, 2 Watt resistor, with a "FUSE"
>> designation. I'm not entirely sure what I should be searching for for a
>> replacement; clearly the "fuse" part of t
On 16.03.2016 09:12, Christian Corti wrote:
On Tue, 15 Mar 2016, Paul Koning wrote:
From the various comments, it sounds like NiMH is a useable substitute. On the
other hand, NiCd batteries are still readily available.
Yes, but NiCd cells really don't like being charged only and never dischar
> I have thought, on occasion, about simulating a segmented machine on
> a non-segmented machine, i.e. one with large unidirectional addresses
> (segmented being a bi-directionally addressed machine) - [...]
Hm, "unidirectional" and "bidirectional" are terms I'm having trouble
figuring out the mea
On 18/03/2016 02:11, "Josh Dersch" wrote:
>> However the only ones they sell are 5% tolerance, ie brown-black-gold-gold
>> not brown-black-gold-silver + blue, but the technical chap I spoke to seemed
>> certain these would be ok. I bought 5 just in case.
>>
>> Onecall are education-only suppl
On Thu, Mar 17, 2016 at 1:18 PM, dwight wrote:
> The 4289 can be used for RAM with the 4040, using the WPM and RPM. It can be
> used
> on the 4004 but it is limited to WPM only.
I know about that; what I was asking about was whether the 4289 (or
4008/4009) could replace "normal' 4002 RAM. I thi
On Wed, Mar 16, 2016 at 6:19 AM, Noel Chiappa
wrote:
> > From: Charles Anthony
>
> > I desperately want to port Multics to a modern architecture
>
> Funny you should mention this! Dave Bridgham and my 'other' project (other
> than the QSIC) is something called iMucs, which is a Multics-li
I was thinking of using a M9301 board to get a console emulator and some
different bootstraps with the 11/05. But can I just put the M9301 in the
slot where the M930 normally goes? Slot 4 AB.
>From looking in the schematics I get that:
1. The bus grant pull ups on the M9301 is through jumpers. Ac
On Thursday (03/17/2016 at 10:04AM -0500), Kyle Owen wrote:
> On Thu, Mar 17, 2016 at 1:43 AM, Eric Smith wrote:
> >
> > Unfortunately I do not, but I've recently become interested in such
> > things, as I have received from a friend's estate an old board from an
> > embedded system (possibly a ca
>
>
>
> I took a look at my 11/40, it has a 9312 in pos 1/2 in the middle of the
> 2nd/rear of two backplanes here:
> http://vintagecomputer.net/digital/PDP11-40/NPG.JPG
>
> With this arrangement I can boot into the console monitor installed on the
> 9312.
> http://vintagecomputer.net/digital/PDP11
On 03/16/2016 09:55 AM, Mouse wrote:
> As for buffer overruns, the point there is that a buffer overrun
> clobbers memory addressed higher than the buffer. If the stack grows
> down, this can overwrite stack frames and/or callers' locals. If the
> stack grows up, all it can overwrite is locals f
On Thu, Mar 17, 2016 at 9:04 AM, Kyle Owen wrote:
> Wow, an engineering sample 4040. Very nice. Highly sought after by those
> CPU collectors out there.
I noticed that it was an engineering sample, but hadn't really thought
about that making it more valuable to collectors. Perhaps I should
sell t
On 17 March 2016 at 11:34, Christian Corti
wrote:
> I'm not sure where I should start asking, so I'm starting here ;-)
>
> I have a problem reading TK70 (and probably TK50) tapes in NetBSD 3.0 on a
> MicroVAX II. There is absolutely no way of reading a single tape block with
> a simple read(). All
On 18 March 2016 at 15:27, Adrian Graham wrote:
> I know exactly where my Z88 and power supply are, serial cable and modem
> not a problem. But! Dial-up services? I could RS232 onto a VAX...
Since I've been playing with my new Raspberry Pi 3 today, I was
thinking one of those might make a conven
Hi
The 4289 can be used for RAM with the 4040, using the WPM and RPM. It can be
used
on the 4004 but it is limited to WPM only.
The RAM can then be use for both program and for data.
I don't recall if the 4008/9 support the RPM but I can look that
up later tonight.
It sounds like you may have a M
11/70: M9301-YC -- E-F Slot #1. It's specially wired like everything else in
Slot #1 through Slot #39. SPC doesn't start until Slot #40. M9302 goes in Row
A-B Slot #44.
KW11 (clock) goes adjacent in Row D Slot #1.
Row C Slot #1 is empty.
Rows A-B Slot #1 take the FP & CP maintenance module
Looks great Ian - a lot more interesting than my attic! Although I do have
the Lake District to play in when I leave work.
Congratulations. All the best Mark
On 17 Mar 2016 03:52, "Ian S. King" wrote:
> Sorry, Sergio, can't quite swing that. :-)
>
> On Mon, Mar 14, 2016 at 12:41 AM, SPC wrote:
On Tue, Mar 15, 2016 at 10:54 PM, dwight wrote:
> I've been scanning the web in search of any code listings for these
> processors.
[...]
> Does anyone have a stash of paper tapes or listings?
Unfortunately I do not, but I've recently become interested in such
things, as I have received from a f
On Thu, Mar 17, 2016 at 1:59 PM, Mattis Lind wrote:
> 2016-03-17 18:50 GMT+01:00 Paul Birkel :
>
> > 11/70: M9301-YC -- E-F Slot #1. It's specially wired like everything
> > else in Slot #1 through Slot #39. SPC doesn't start until Slot #40.
> M9302
> > goes in Row A-B Slot #44.
> >
> > KW11 (
On 3/18/16 9:15 PM, Paul Anderson wrote:
I have a RV20 somewhere. Are you in a big hurry?
On Fri, Mar 18, 2016 at 6:48 PM, Al Kossow wrote:
we have a bunch of optical packs at CHM that we'd like to archive
does anyone have a working setup?
no, but I have nothing with a LESI interface, so
I saw that there were a post on PDP-8/a systems (and parts).
I have a few 8A100 chassis. These are H9300 with a G8016 regulator board.
No CPU, no memory, no frontpanels. Just the H9300 chassis including the 10
slot backplane, the 50Hz transformer assembly and the G8016 MOS memory
regulator.
BTW.
On 18 March 2016 at 15:09, Austin Pass wrote:
>> On 18 Mar 2016, at 14:04, Liam Proven wrote:
>>
>> I've been asked about doing this for an exhibition.
>>
>> From some cursory Googling, it seems that the Z88 has a terminal
>> emulator, and equipped with a suitable serial cable, you could just
>>
On 3/17/16 5:44 PM, Adrian Graham wrote:
On 17/03/2016 22:46, "Vincent Slyngstad" wrote:
From: Josh Dersch: Thursday, March 17, 2016 3:34 PM
It's listed in the print set as a 1 Ohm, 2 Watt resistor, with a "FUSE"
designation. I'm not entirely sure what I should be searching for for a
replace
Everyone,
There is less than one month until showtime.
I'm declaring noon ET tomorrow as the final deadline for registering
exhibits.
Exhibits so far:
http://vcfed.org/wp/festivals/vintage-computer-festival-east/vcf-east-exhibits/
Exhibit registration:
http://www.vcfed.org/registration/east_
On Thu, Mar 17, 2016 at 4:02 PM, Mattis Lind wrote:
> >
> >
> >
> > I took a look at my 11/40, it has a 9312 in pos 1/2 in the middle of the
> > 2nd/rear of two backplanes here:
> > http://vintagecomputer.net/digital/PDP11-40/NPG.JPG
> >
> > With this arrangement I can boot into the console monit
> From: David Bridgham
> how the GE processor mapped each segment to physical memory on its own
> while the x86 maps the segments into a single 2^32 byte linear address
> space first and then maps that to physical memory.
Oh, right, I remember there was a 4GB limit on physical mem
-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Brent
Hilpert
Sent: Friday, March 18, 2016 5:41 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: Code listings for the I4004 or I4040
.
I had a failed 4201 chip (clock gen), it would
On 2016-Mar-17, at 10:11 PM, dwight wrote:
> Also, I've found a source for 5.185MHz crystals.
> ACE Components has some. They are in San Jose, on Oakland Rd.
> Dwight
I have two items which use 4004 procs, one is a Prolog M900B E/PROM programmer
ca. 1979.
The manual includes the firmware source.
FYI - the key codes I measured previously for Data General and HP have been
cut, tested, and verified. Amazingly, my measurements were correct. So to
summarize:
XX2247
Code: 5173757
Use: DEC PDP-8 (all varieties), PDP-11 machines that do not use an ACE blank
(11/24, 11/44)
XX2065
Code: 1353757
Us
On Mar 16, 2016 20:47, "Chuck Guzis"
> I rarely keep originals, but copy them and return them to the original
owner. If you're interested, I can dig a disk or two out and list the
contents.
Sure, or a 22disk image, if you think you have the same disk I do. Just
something to check against to see
>
>
>
> If one read notes in the PDP-11/04 printset it says: Do not insert a M930
> or M9302 in a MUD slot. Only in the Unibus slots or you will have short
> circuit. On the other hand it does not say that the M9301 (or M9312) cannot
> be installed in a unibus slot. It recommends that those boards
>> As for buffer overruns, the point there is that a buffer overrun
>> clobbers memory addressed higher than the buffer. If the stack
>> grows down, this can overwrite stack frames and/or callers' locals.
>> If the stack grows up, all it can overwrite is locals for the
>> current frame and unused
Eric
The answer is no and yes.
You can not use the normal RAM instructions with the 4289. Still, one
can have RAM through the 4289. It would have no status RAM like the 4002s
but for a program that is written to use conventional RAM through the
4289, it has no more overhead than regular 4002s, for
> On 18 Mar 2016, at 14:04, Liam Proven wrote:
>
> I've been asked about doing this for an exhibition.
>
> From some cursory Googling, it seems that the Z88 has a terminal
> emulator, and equipped with a suitable serial cable, you could just
> run a cable to a host device with an Internet conne
>I'd be fascinated to hear of any gotchas if you were curious enough to
>give it a go. My skills at things like making serial cables are very
>minimal indeed.
I know exactly where my Z88 and power supply are, serial cable and modem
not a problem. But! Dial-up services? I could RS232 onto a VAX...
There is a 4201 by national semi on ebay.
I bought a 4201 recently for around $10.
I'm mostly looking for a 4040. I have a 4289,
three 4002-1s and two 4002-2s. I'd like to setup
the 4289 such that I have a boot ROM and then shadow
it into RAM. I'd then disable the ROM and run on
RAM only. The 4040
2016-03-17 13:49 GMT+01:00 Noel Chiappa :
> > From: Mattis Lind
>
> > I was thinking of using a M9301 board to get a console emulator and
> > some different bootstraps with the 11/05. But can I just put the
> M9301
> > in the slot where the M930 normally goes?
> > ...
> > M
On 03/17/2016 11:59 AM, Noel Chiappa wrote:
> > Each segment
> > is in it's own address space; any memory reference was, per force, a
> > segment number and offset.
>
> In this last sentence, is that referring to Multics?
>
> If so, that is exactly how the x86 _hardware_ works,
He mi
Folks,
I've found something I forgot I had; a Baydel Unibus disk controller.
At one time I had 3 or 4 of these in complete systems but carelessly
managed to trade them all away(!) - except this one board.
They were all identical; a pdp-11/04 with a quad Unibus Baydel disk
controller hooked up to
> From: Mouse
> Well, what was the largest virtual memory space available on various
> machines?
I have thought, on occasion, about simulating a segmented machine on a
non-segmented machine, i.e. one with large unidirectional addresses (segmented
being a bi-directionally addressed mac
On Thu, Mar 17, 2016 at 3:35 PM, Guy Sotomayor wrote:
> I’m planning on doing a 4 layer board so I can avoid having routing issues
> due to 3 different
> power supply voltages (yea, modern low voltage design meets 5v). I haven’t
> done a 4 layer
> design before, so I’m in for a bit of learning
I find it interesting that most applications seem to use a small amount
of RAM but a lot of ROM.
When the 4004 was designed, it had the extra pins assigned to select
more banks of RAM instead of ROM.
By the 4040 time they added more ROM select controls.
I don't think I've ever seen all possible R
> My call for a VAX-11/750 a month or so ago actually bore some fruit
> (locally, even!) and as of a couple of weeks ago, I now have a very
> nicely configured 11/750 system taking up most of the basement.
Some guys have all the luck. Now if anyone in the Southeast has a 750
they're no longer att
2016-03-17 17:27 GMT+01:00 Guy Sotomayor :
>
> > On Mar 17, 2016, at 6:01 AM, Mattis Lind wrote:
> >
> >>>
> >
> > If one read notes in the PDP-11/04 printset it says: Do not insert a M930
> > or M9302 in a MUD slot. Only in the Unibus slots or you will have short
> > circuit. On the other hand i
> > This means that you not have the terminator in the last slot of the bus,
> > right? Since your bus is so short it won't probably matter.
> >
> >
> Dave McGuire and I went over the system and concluded the same, basically
> it's either put it there or I can't have an RL02 drive controller becaus
Just wanted to let folks know where the MEM11A (as opposed to the UMF11) is.
All of the verilog code is written for the CPLD and I’ve simulated full unibus
transactions
to the FRAM and everything seems to work.
I’m almost done with schematic entry. I just have a few things to clean up and
veri
I've been asked about doing this for an exhibition.
>From some cursory Googling, it seems that the Z88 has a terminal
emulator, and equipped with a suitable serial cable, you could just
run a cable to a host device with an Internet connection and have a
text-only terminal session fairly readily.
> From: Mattis Lind
> I was thinking of using a M9301 board to get a console emulator and
> some different bootstraps with the 11/05. But can I just put the M9301
> in the slot where the M930 normally goes?
> ...
> M9301 goes into MUD slots. But can it go into the slot wher
On Thu, Mar 17, 2016 at 1:43 AM, Eric Smith wrote:
>
> Unfortunately I do not, but I've recently become interested in such
> things, as I have received from a friend's estate an old board from an
> embedded system (possibly a cash register) which has a 4040 CPU.
> Photos here:
>
> https://www.
> On Mar 17, 2016, at 6:01 AM, Mattis Lind wrote:
>
>>>
>
> If one read notes in the PDP-11/04 printset it says: Do not insert a M930
> or M9302 in a MUD slot. Only in the Unibus slots or you will have short
> circuit. On the other hand it does not say that the M9301 (or M9312) cannot
> be ins
>
>
>
There is a nice 1975 iasis inc.educational book series about
microcomputers. Volume III covers "The 4-bit Microcomputer" and takes a
person step by step through the 4004 processor, and it came with a
reference card. It covers the entire chip set for the i4000.
--
@ BillDeg:
Web: vintageco
>> Also, Multics stacks grow upward -- great for protection against
>> buffer overrun attacks, but a pain in a modern architecture.
> Sorry, I don't follow that? Why does the stack growth direction make
> a difference? It's just a convention, isn't it, which direction is
> 'push' and which is 'po
I have M8315s, M8316, M8317, M8357s (RX8-E), etc if anyone needs any to go
with the boxes.
Paul
On Sat, Mar 19, 2016 at 12:12 PM, Mattis Lind wrote:
> I saw that there were a post on PDP-8/a systems (and parts).
>
> I have a few 8A100 chassis. These are H9300 with a G8016 regulator board.
> No
2016-03-17 18:50 GMT+01:00 Paul Birkel :
> 11/70: M9301-YC -- E-F Slot #1. It's specially wired like everything
> else in Slot #1 through Slot #39. SPC doesn't start until Slot #40. M9302
> goes in Row A-B Slot #44.
>
> KW11 (clock) goes adjacent in Row D Slot #1.
>
> Row C Slot #1 is empty.
>
On Fri, 18 Mar 2016, Brent Hilpert wrote:
I have two items which use 4004 procs, one is a Prolog M900B E/PROM programmer
ca. 1979.
The manual includes the firmware source. (Somewhat bizarrely, it's
typed/printed onto coding forms.)
Here are the first two pages (photos, not scanned).
We have
On Fri, Mar 18, 2016 at 10:38 AM, Ken Seefried wrote:
>> My call for a VAX-11/750 a month or so ago actually bore some fruit
>> (locally, even!) and as of a couple of weeks ago, I now have a very
>> nicely configured 11/750 system taking up most of the basement.
>
> Some guys have all the luck. N
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