On 05/21/2016 07:34 PM, Toby Thain wrote:
> Don't underestimate the headache of handling two zeroes.
At least on the CDC iron, it was never much of a problem. The primary
way you got -0 as a result (without resorting to boolean operations),
was subtracting -0 from -0. The ZR/NZ operations worke
I picked up one of those power systems, the other was gone before I got to it.
The only things I can add are an amiga and tons of cisco network gear.
Not a whole lot this year I suppose.
Sent from my T-Mobile 4G LTE Device
Original message
From: Brian Marstella
Date: 5
I am hoping to install Windows NT 3.1 on my Jensen. Unfortunately I am
getting an error code relating to VGA. The tech docs I have make no mention
of this code, anyone know what it means:
VGA ?? 06 0020
Regards
Rob
On 22/05/2016 08:58, "Robert Jarratt" wrote:
> I am hoping to install Windows NT 3.1 on my Jensen. Unfortunately I am
> getting an error code relating to VGA. The tech docs I have make no mention
> of this code, anyone know what it means:
>
>
>
> VGA ?? 06 0020
I can't remember what
> -Original Message-
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Adrian
> Graham
> Sent: 22 May 2016 09:50
> To: General Discussion: On-Topic and Off-Topic Posts
>
> Subject: Re: VGA Error Code from DECpc AXP 150 (Jensen)
>
> On 22/05/2016 08:58, "Robert Jarratt"
On 22/05/2016 11:51, "Robert Jarratt" wrote:
>> I can't remember what VGA card was in a Jensen, Compaq Qvision?
>
>
> Yes, that is correct.
EISA card, yay.
> Already tried it from the AlphaBIOS and I get the same error. The VGA output
> varies from all grey, to black and white vertical stripe
On Sat, May 21, 2016 at 6:38 PM, Mattis Lind wrote:
>
> I have now added some 80 more floppies to download if you would like to
> check.
>
> http://www.datormuseum.se/documentation-software/norsk-data-floppy-disks
Very cool!
Now I just need to find a tool that converts IMD to raw format and
runs
söndag 22 maj 2016 skrev Torfinn Ingolfsen :
> On Sat, May 21, 2016 at 6:38 PM, Mattis Lind > wrote:
> >
> > I have now added some 80 more floppies to download if you would like to
> > check.
> >
> > http://www.datormuseum.se/documentation-software/norsk-data-floppy-disks
>
> Very cool!
> Now I j
> -Original Message-
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Adrian
> Graham
> Sent: 22 May 2016 12:16
> To: General Discussion: On-Topic and Off-Topic Posts
>
> Subject: Re: VGA Error Code from DECpc AXP 150 (Jensen)
>
> On 22/05/2016 11:51, "Robert Jarratt"
>>> First off, the C standard mandates that the order of fields in a
>>> struct cannot be reordered,
>> Yes. (I think this is a Bad Thing, but I can see why they did it.)
> Given that C is a systems implementation language, how would you
> define HW related data structures where the order of the f
> I'd wager that most C code is written *assuming* 2's complement and 0
> NULL pointers (and byte addressable, but I didn't ask for that 8-).
Well, yes. I'd go further: I'd wager most C code is written assuming
everything works just the way the developer's system does; most people
I interact with
>> Also, PostScript has a lot of language syntax, whereas FORTH has
>> immediate words that act like language syntax. (The difference is
>> that FORTH makes it possible to change those words, thereby changing
>> the apparent syntax.)
> What do you mean by that?
Consider a simple definition
: foo
On 2016-05-22 3:10 AM, Chuck Guzis wrote:
On 05/21/2016 07:34 PM, Toby Thain wrote:
Don't underestimate the headache of handling two zeroes.
At least on the CDC iron, it was never much of a problem. The primary
way you got -0 as a result (without resorting to boolean operations),
was subtrac
>> I'm not even sure
>
>> size_t foo = (size_t)-1;
>
>> is legal,
>
> In C++, I don't know. In C, I'm fairly sure it's legal.
>
>> or even does what I expect it to do (namely---set foo to the largest
>> size_t value possible (pre C99).
>
> I'm not sure it does that. If you want that, I thin
Jerry Weiss wrote:
> I saw one Altair 8800
I haven't seen an Altair at a hamfest in this century.
Out of curiosity, what was the seller asking?
Bill S.
I think I have found the problem, when I took the card out to change its
slot, I found there were some corroded pins on one of the chips (looks like
memory). It looks like battery leakage damage, but the odd thing is that it
is nowhere near a battery. Cleaning it up now to see if that will fix it.
Mouse writes:
> I don't really know FORTH; does it use - for subtraction?
Generally, yes.
> On May 22, 2016, at 5:40 AM, Mouse wrote:
>
First off, the C standard mandates that the order of fields in a
struct cannot be reordered,
>>> Yes. (I think this is a Bad Thing, but I can see why they did it.)
>> Given that C is a systems implementation language, how would you
>> defi
On Sun, 22 May 2016, Mouse wrote:
> >>> First off, the C standard mandates that the order of fields in a
> >>> struct cannot be reordered,
> >> Yes. (I think this is a Bad Thing, but I can see why they did it.)
> > Given that C is a systems implementation language, how would you
> > define HW rel
On Sun, 22 May 2016, Guy Dawson wrote:
> >> I'm not even sure
> >
> >> size_t foo = (size_t)-1;
> >
> >> is legal,
> >
> > In C++, I don't know. In C, I'm fairly sure it's legal.
> >
> >> or even does what I expect it to do (namely---set foo to the largest
> >> size_t value possible (pre C9
On 05/22/2016 06:23 AM, Toby Thain wrote:
> I didn't mean performance - I meant programmer effort to ensure
> robust/correct code. The Grishman book didn't reassure me, but thanks
> for the additional info.
Well, if you consider it carefully, does zero really have a sign? So,
the convention of
> -Original Message-
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Robert
> Jarratt
> Sent: 22 May 2016 17:02
> To: 'General Discussion: On-Topic and Off-Topic Posts'
>
> Subject: RE: VGA Error Code from DECpc AXP 150 (Jensen)
>
> I think I have found the problem, wh
Sorry, I didn’t ask on this one. It looked like a well used/loved machine with
some wear and customizations to the front panel
Jerry
> On May 22, 2016, at 9:51 AM, Bill Sudbrink wrote:
>
> Jerry Weiss wrote:
>> I saw one Altair 8800
>
> I haven't seen an Altair at a hamfest in this century.
On 5/22/16 4:52 AM, Torfinn Ingolfsen wrote:
> Now I just need to find a tool that converts IMD to raw format and
> runs on FreeBSD.
http://bitsavers.org/bits/convergent/ngen/imd2raw
may be adequate. There may also be other versions around
that people have squashed bugs in it.
On 05/22/2016 11:36 AM, Al Kossow wrote:
>
>
> On 5/22/16 4:52 AM, Torfinn Ingolfsen wrote:
>
>> Now I just need to find a tool that converts IMD to raw format and
>> runs on FreeBSD.
>
> http://bitsavers.org/bits/convergent/ngen/imd2raw may be adequate.
> There may also be other versions arou
Related to the early promotional Inside Macintosh phonebook edition, last
week I scanned the documentation for two versions of the MacSupplement
documentation. I have not seen this posted anywhere else so please feel
free to store these in a central documentation archive. I got this
documentation
Hi David!
David Collins:
> Martin, I might be able to help you as I think we have a 7596A.
Great! :)
> Are these EPROMs from the processor PCA?
I think so.
> Are you able to tell me which 'U'
> numbers they are in the PC board?
No, not now. The plotter is in the shackspace in Stuttgart and I
On 05/21/2016 10:53 PM, David Collins wrote:
Martin, I might be able to help you as I think we have a 7596A.
Are these EPROMs from the processor PCA? Are you able to tell me which 'U'
numbers they are in the PC board?
I haven't looked at the plotter itself, but the service manual we have shows
On Sun, May 22, 2016, Mouse wrote:
> >> Also, PostScript has a lot of language syntax, whereas FORTH has
> >> immediate words that act like language syntax. (The difference is
> >> that FORTH makes it possible to change those words, thereby changing
> >> the apparent syntax.)
> > What do you mean
size_t foo = (size_t)-1;
>>>size_t foo = -(size_t)1;
>> size_t foo = (size_t)(-1);
> Why bother? Won't:
> size_t foo = ~0UL;
> do (~0ULL for C99)?
Only if size_t is no larger than unsigned long int (unsigned long long
int for the ULL version). I don't think that's g
On Sun, 22 May 2016, Mouse wrote:
> size_t foo = (size_t)-1;
> >>>size_t foo = -(size_t)1;
> >> size_t foo = (size_t)(-1);
> > Why bother? Won't:
> > size_t foo = ~0UL;
> > do (~0ULL for C99)?
>
> Only if size_t is no larger than unsigned long int (unsigned long long
Background - I have a PDP 11/40 that came to me with a CPU backplane and a
general purpose 4 slot peripheral backplane. The CPU backplane came to me
connected to the 4 slot via a std 11/40 M981. In the 4-slot I have I have
a working 64K solid-state RAM card, M7856 serial card, M9312
bootstrap/con
On Sun, May 22, 2016 at 12:33 PM, tony duell
wrote:
> Strictly the core backplanes are not Unibus backplanes. They have Unibus In
> and Out connectors, but the slots are wired for the core memory board,
> not Unibus boards (like SPCs -- Small Peripheral Controllers -- which is
> what
> you serial
Strictly the core backplanes are not Unibus backplanes. They have Unibus In
and Out connectors, but the slots are wired for the core memory board,
not Unibus boards (like SPCs -- Small Peripheral Controllers -- which is what
you serial port is).
> Basic Question #1
> Do I need grant cards in *ever
The core memory/CPU backplane is a special case and doesn’t need grant cards.
If you have linked up to the expansion Unibus then you need to check you have
the NPG jumper in row C, Pins A1 and B1 in each slot. If these do not have wire
wrap then you will either need to wire wrap them or insert a
> Are you saying remove all of the GC cards, just leave the slots blank?
Yes, from the slots that are designed to take the core memory or its
controllers (I assume, given you have special backplanes, there are
boards with the core planes on, and more boards with the XY drivers
or the sense/inhib
On Sun, May 22, 2016 at 1:10 PM, tony duell wrote:
>
> > Are you saying remove all of the GC cards, just leave the slots blank?
>
> Yes, from the slots that are designed to take the core memory or its
> controllers (I assume, given you have special backplanes, there are
> boards with the core pla
Hi William,
If I follow right, you have gotten some great advice,,but I'm not sure
about a few things.
Is your 4 slot SPC a DD11-A, DD11-B, or DD11-CK/CF? The standard one used
in most 1140s is the DD11-B, and a lot had DD11-Cs added later. The DD11-B
will not work with the RL11 and probably no
On May 22, 2016 1:22 PM, "Mark Darvill" wrote:
>
> The core memory/CPU backplane is a special case and doesn’t need grant
cards.
>
> If you have linked up to the expansion Unibus then you need to check you
have the NPG jumper in row C, Pins A1 and B1 in each slot. If these do not
have wire wrap th
On May 22, 2016, at 6:09 AM, Mouse wrote:
>
> I've often thought about building a C implementation that goes out of
> its way to break assumptions like "integers are two's complement with
> no padding bits" or "floats are IEEE" or "nil pointers are all-bits-0"
> or "all pointers are the same size
FYI, Tim at turntablebasics.com has pretty much every belt and wheel that
PRB and/or their close competitors offer. He has no shipping minimum and a
very low basic shipping rate for light little parts like belts ($1.00 or
so).
http://www.turntablebasics.com/
He also stocks a number of hard-to-fin
time warp.
I found the manuals and software I bought in 2010, still in the unopened box
yesterday, and since then I got a base unit (no storage box).
Unfortunately, the firmware that was sent to me that I uploaded to bitsavers is
mostly FF's. Fortunately, I could read the eproms in mine, the ligh
On 5/22/16 4:57 PM, Al Kossow wrote:
> If someone has the scsi storage box, dumping the 6502 floppy eprom would be
> really
> helpful (and maybe taking some pictures of the board).
>
turns out that one was good. the Adaptec 4000 dump was the bad one
> From: Bill Degnan
> So I decided to insert two 32K core memory backplanes
32KW, those would be MM11-U backplanes, right?
> My plan is to replace the solid-state RAM card with core, and this will
> free up a slot on the 4-slot backplane for a terminator.
Terminators all only go
>>> Why bother? Won't:
>>> size_t foo = ~0UL;
>>> do (~0ULL for C99)?
>> Only if size_t is no larger than unsigned long int (unsigned long
>> long int for the ULL version). I don't think that's guaranteed.
> How can you have the type of `size_t' wider than the widest unsigned
> integer typ
On 21 May 2016 at 18:38, Mattis Lind wrote:
> I have now added some 80 more floppies to download if you would like to
> check.
>
> http://www.datormuseum.se/documentation-software/norsk-data-floppy-disks
Thanks Mattis!
Downloaded. I will go through them soon.
Chuck, the problem with IMDU is tha
On 05/22/2016 07:30 PM, Tor Arntsen wrote:
> Chuck, the problem with IMDU is that it's an ms-dos program and
> Torfinn hasn't yet found a working emulator for his BSD setup. I'm
> sure there is one. But it's very inconvenient to have to go through
> MSDOS for this, so Al's suggestion of the imd
An M930 terminator in the far left slot in A/B, where you have the RL11
(M7762). I don't remember if the G7273 is a unibus or q-bus grant card. I
always use the G727 , I think, the little 2 inch by 2 inch or so.
Try front panel funstions with the RL11 out. You'll probably have to move
it to slot
Paul,
What terminator card exactly? As I had written originally, the system was
functional before I added the core planes. I was thinking that I needed a
terminator now that I have more than just the cpu plus four slot plane, but
I did not have the space for it along with all of the cards I alrea
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