You need some way to initialize the system to the peripheral that contains
the.OS media. The m9312 is a general purpose co ntroller for that
purpose. There are roms that install on the 9312 for almost any drive
hardware. When you get a system that comes with an M9312, it will have the
appropriat
> From: Rob Jarratt
> is the M9312 essential to ever get this machine to boot up an operating
> system?
Interesting question. I don't have my -11/24 running yet, so this reply is
theoretical, not tried in practice (and as we all know, the difference
between theory and practice is even
I am in the UK (Manchester). I suspect there are some people I know who would
be able to lend me one.
The bit I am confused about is that I got a console prompt with just the CPU
(M7133) and Unibus Map Module (M7134) installed. Presumably I could type in a
bootstrap program from there?
R
I saw this reply later than the previous one. It confirms that I don't
*need* it for booting, but it would be useful.
I suspect some of the other cards that were in the machine might do the
necessary termination stuff.
Thanks
Rob
> -Original Message-
> From: cctalk On Behalf Of Noel Ch
> From: Rob Jarratt
> I suspect some of the other cards that were in the machine might do the
> necessary termination stuff.
Different answers for each part of the functionality.
1A and 1C fundamentally have be at the end of the bus, physically. So,
unlikely; since _other_ cards aren
Anyone want a KK11-A:
https://www.ebay.com/itm/275173894774
US$200 sounds like a lot, I know, but KK11-A'S and FP11-A's are going for that
much; an FP11-A just went for US$250. And KK11-A's are rare; this is he first
one in a while.
Noel
My 11/24 does *not* have an M9312. My UNIBUS out from the processor
backplane goes to an RK611, and then to a VT11. I have an M9301 at the
end, in the VT11 UNIBUS OUT slot. I didn't pull the map card, but I am
99.% sure that my boot ROMs (RL11, RK611) are on my UNIBUS map card.
The UNIB
The bit I am confused about is that I got a console prompt with just the CPU
(M7133) and Unibus Map Module (M7134) installed. Presumably I could type in a
bootstrap program from there?
Sure, that's just normal ODT if I recall. On my 5.25 inch 11/24 I have
the CPU, MMU, a 1mb memory card, H727
I'm downsizing. Have to get rid of everything. The driveway is filled systems
test equipment, components, parts, books, etc. Several thousand TTL chips
prototyping boards. Come out and take what you. Junk Bees will be here on
Tuesday for what is left.
Call 925-998-9968 for directions.
Put one together with back to back 9V batteries and a 5K pot. Does
exactly what I wanted.
The Data Translation board is set up for SE inputs and +/-10 V input range.
Was able to apply a series of DC voltages to the DT2762 board and record
the A/D value using ODT (tedious, but works OK).
Using
Speaking of which, what does the console rom "DO"? Is it like the
interactive boot from a pdp11/23+ or better where you can type in the
device name, run little memory diagnostics and such?
I recall that with the real boot chips on a unibus 11/34 you could just
jump to the location of the ROM a
On 2/18/22 21:43, ben via cctalk wrote:
The 70's was all low scale tech. I suspect it was the high
speed/edge rates more the power that kept ECL from common
use. Any other views on this topic. Ben, who only had
access to RADIO SHACK in the 70's.
PS: Still grumbling about buying life time tube
> From: Jay Jaeger
> SACK turnaround capability so that the machine doesn't hang accessing
> an address that doesn't respond on the UNIBUS.
Umm, I think you're mixing up i) grant timeouts and ii) master-slave
timeouts.
All PDP-11 CPUs have master-slave timeout handling; after a short
> On Feb 19, 2022, at 1:28 PM, Jon Elson via cctalk
> wrote:
>
> On 2/18/22 21:43, ben via cctalk wrote:
>>
>> The 70's was all low scale tech. I suspect it was the high speed/edge rates
>> more the power that kept ECL from common use. Any other views on this topic.
>> Ben, who only had ac
> On Feb 19, 2022, at 10:51 AM, Noel Chiappa via cctalk
> wrote:
> The -11/34 (not the /34A) has something unusual for grant timeouts, but I
> forget the details. I'll look it up.
I just did an 11/34 restoration last year, so this is fresh in mind — I think
you are thinking of the M9302, Noe
Try these:
https://mirror.rqsall.com/misc/rh-alpha/7.2/
Larkin
Here is how I used mine on a PDP 11/05. Literally right now.
1. Boot up the system and use the front panel to load 165020(8)
2. Run from this address
3. My system is set to communicate with a Teletype, so it comes to life
and prints the status of the CPU registers to the teletype
4. I type in
> On Feb 19, 2022, at 10:51 AM, Noel Chiappa via cctalk
> wrote:
> The -11/34 (not the /34A) has something unusual for grant timeouts, but I
> forget the details. I'll look it up.
> On Feb 19, 2022, at 12:11 PM, Fritz Mueller wrote:
> I just did an 11/34 restoration last year, so this is fresh
On Sat, Feb 19, 2022 at 4:40 PM Fritz Mueller via cctalk
wrote:
> > On Feb 19, 2022, at 12:11 PM, Fritz Mueller wrote:
> A few additional details, in case it is helpful:
>
> IIRC, the 11/34 doesn’t have SACK timeout implemented in the CPU cards (the
> /34A did add this, however.) So without an
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