On 8/14/19 8:04 PM, dwight via cctalk wrote:
> Some of the newer larger SD cards use a different write voltage than 3.3V.
> There is a ways of asking the card what voltage it likes during the init.
> Using the full 3.3V on these parts can damage them.
> They are all required to init with 3.3V but
u got any pics of this thing?
On Wed, Aug 14, 2019 at 10:49 PM Curt Vendel via cctalk <
cctalk@classiccmp.org> wrote:
> Hi,
>
> I’m doing some work for a friend who has one of these unicorns it’s
> apparently a super beefed up CIA use the laptop that wound up in Russia
> somehow and he got it
Hi,
I’m doing some work for a friend who has one of these unicorns it’s
apparently a super beefed up CIA use the laptop that wound up in Russia somehow
and he got it shipped back here to the US
The motherboard was modified it looks like the hard drive was on some kind of a
tray going to a
Some of the newer larger SD cards use a different write voltage than 3.3V.
There is a ways of asking the card what voltage it likes during the init.
Using the full 3.3V on these parts can damage them.
They are all required to init with 3.3V but the voltage for writing may be
different.
I've only
Connor Krukosky and I have been working on laying out a new quad-height DEC
protoboard, which can also be sheared down into a dual-height board. Full
announce on the VC Forums:
http://www.vcfed.org/forum/showthread.php?71177-GW-DEC-1-A-New-Quad-Height-DEC-Prototyping-Board=582892#post582892
> I don't know if the front console on the early UNIBUS machines works without
> any memory on the UNIBUS - I'm too lazy to check. I have this vague memory
> that
> they do, though.
The front console on the '45 indeed does run just fine with no UNIBUS (or
FASTBUS) memory in the machine. Its is
> From: Brent Hilpert
> I wouldn't have thought any of the (various 11 CPU) ODTs used
> interrupts for the console
They don't.
> Don't know which CPU Noel was referring to.
The OP was having problems with an LSI-11 (M7264 quad card); I was working
with an LSI-11/2 (M7270 dual
> From: Allison Parent
> ! Seriously? ... Memory of some form there is a must.
I don't know about you, but my approach in looking into hardware issues is
often to start by reducing things to the simplest possible configuration that
exhibits the failure.
(I asssume the various reasons
On Fri, Aug 09, 2019 at 02:43:38PM -0700, Adam Thornton via cctalk wrote:
> I did have a case where the Pi I was using as secondary DNS/DHCP and as the
> secondary backup server (using USB spinning disk) destroyed its SD card.
>
> But then it turned out not to be the load at all. No matter what
On 2019-Aug-14, at 1:26 PM, Allison Parent via cctalk wrote:
> IPhoned it in!
>
>> On Aug 14, 2019, at 2:19 PM, Noel Chiappa via cctalk
>> wrote:
>>
>> From: Jonathan (systems_glitch)
>
>> Yep, fun times on LSI-11/2!
>
> Heh, this one was _utterly trivial_ compared to the 'must have working
On 8/14/2019 12:46 PM, Seth J. Morabito via cctalk wrote:
It's not clear that it's the dynamic nature of the content he's
unhappy with; it might just be that having stuff scattered across a
zillion personal pages (be they blogs, or whatever) is going to make
it hard to find the useful one when
IPhoned it in!
> On Aug 14, 2019, at 2:19 PM, Noel Chiappa via cctalk
> wrote:
>
> From: Jonathan (systems_glitch)
> Yep, fun times on LSI-11/2!
Heh, this one was _utterly trivial_ compared to the 'must have working memory
at 0 or ODT won't start'! (I don't think I've ever seen that one
"and that's why he's cranky. (Well, more so than he usually is :-)"
A wealth of vintage cmp information, but good heavens he is cranky.
--
Anders Nelson
+1 (517) 775-6129
www.erogear.com
On Wed, Aug 14, 2019 at 2:01 PM Noel Chiappa via cctalk <
cctalk@classiccmp.org> wrote:
> >> Al
Noel Chiappa via cctalk writes:
> >> Al Kossow via cctalk writes:
>
> >> Buried in a filing cabinet in the basement with a sign that
> >> says "Beware of Leopard".
>
> Good one!
>
> > From: Seth J. Morabito
>
> > I'm going to respectfully disagree .. the proliferation of
>
> From: Jonathan (systems_glitch)
> Yep, fun times on LSI-11/2!
Heh, this one was _utterly trivial_ compared to the 'must have working memory
at 0 or ODT won't start'! (I don't think I've ever seen that one in DEC
documentation anywhere...)
Noel
>> Al Kossow via cctalk writes:
>> Buried in a filing cabinet in the basement with a sign that says
>> "Beware of Leopard".
Good one!
> From: Seth J. Morabito
> I'm going to respectfully disagree .. the proliferation of modern
> JavaScript frameworks that are designed
Al Kossow via cctalk writes:
> On 8/14/19 8:53 AM, Anders Nelson via cctalk wrote:
>> I hope this thread will be written to a blog post
>
> Buried in a filing cabinet in the basement with a sign that says
> "Beware of Leopard".
>
> Blogs are a stupid way to archive information, almost as stupid
Will...
I’m still waiting for you and the Rhode Island Computer Society to get my brand
new in the box 9766, the Alignment disk platter, the box of spare heads and the
other unit 9766 beat up unit up and running that I gave you to donate to RICS
for free in exchange for you reading the dozen
On 8/14/19 8:53 AM, Anders Nelson via cctalk wrote:
> I hope this thread will be written to a blog post
Buried in a filing cabinet in the basement with a sign that says "Beware of
Leopard".
Blogs are a stupid way to archive information, almost as stupid as putting it
on Facebook.
On 8/13/19 9:15 PM, Carlos E Murillo-Sanchez via cctalk wrote:
> So, do you guys know if Datapoint made monitors for others?
Datapoint was a Convergent OEM.
On 8/14/2019 10:17 AM, Noel Chiappa via cctalk wrote:
> From: Paul Koning
> Isn't the interrupt disabled by RESET?
Nope. On the -11/03 and KDF11-A, BEVNT is wired straight into the CPU, and
there's no internal register to control it.
The BDV11 does have a register which can
Thanks. I believe you are right also :)
The expensive ceramic packages have hermetic seals, not so the plastic
(epoxy) packages used in commercial grade parts.
There are some kind of failures that can be fixed by baking - but I don't
know if this is one of them (if the bond wire is soldered to
Yep, fun times on LSI-11/2! Some configurations also won't boot unless it's
on, if I remember correctly. I suppose this is part of the reason that
LSI-11/2 CPU boards are so cheap!
Thanks,
Jonathan
On Wed, Aug 14, 2019 at 10:17 AM Noel Chiappa via cctalk <
cctalk@classiccmp.org> wrote:
> >
> From: Paul Koning
> Isn't the interrupt disabled by RESET?
Nope. On the -11/03 and KDF11-A, BEVNT is wired straight into the CPU, and
there's no internal register to control it.
The BDV11 does have a register which can enable/disable the LTC (it connects
BEVNT to ground via a
> On Aug 14, 2019, at 7:31 AM, Noel Chiappa via cctalk
> wrote:
>
>> From: Jerry Weiss
>
>> I turned BEVENT off and it boots successfully. I am not immediately
>> sure why this is necessary.
>
> If an LTC interrupt happens before the OS has set up the LTC vector, etc,
> hilarity ensues.
>
Charles wrote:
>
> After hanging vertically for 36 hrs in a hot upstairs room, more goop seeped
> out from under the keyboard. It now works again. Whew.
>
> While running on the bench for burn-in testing, a cursor problem suddenly
> appeared... it would only move every other keystroke. With the
> From: Jerry Weiss
> I turned BEVENT off and it boots successfully. I am not immediately
> sure why this is necessary.
If an LTC interrupt happens before the OS has set up the LTC vector, etc,
hilarity ensues.
E.g. the LTC has to be turned off before UNIX V6 will boot on an -11/23:
That sounds like it is trapping due to an LTC interrupt. Turn off the LTC
cheers,
Nigel
On 13/08/2019 21:05, Douglas Taylor via cctalk wrote:
Recently, I assembled one of the RX02 emulator boards developed by
AK6DN. I am using it presently in a BA11-M box with PDP-11/2 cpu
(really basic 16
Charles,
I believe that TTL chips suffer from failure or detachment of the bonding
wire that runs from the die to the interconnect pin, which would result in a
floating pin as described.]
Not sure if environmental storage affects this as chips should be sealed...
I have also recently seen it
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