The conventional mounting for RL02 drives in a corporate cabinet puts one at
the top with the 6U CPU in the middle *but* that assumes that you have a
corporate cabinet designed for that purpose -- in which case the top is
missing so that the RL02 disk-pack can be directly accessed, and there is a
>> (I have yet to check and see if the KY11-LB asserts SACK if the CPU
>> halts on its own accord - probably 'yes', but that's a project for
tomorrow.)
Yes, it does. I toggled in the following program:
5000
5200
776
0
(what, you all can't program a PDP-11 in octal? :-) and hit
I am wondering if I have racked my 11/24 correctly.
As you can see here:
https://robs-old-computers.com/2022/02/10/pdp-11-24-progress/ I have put the
CPU at the top and the two RL02 drives underneath.
The problem is that the CPU enclosure catches on the RL02 underneath. There
is a bit of
Hi
Is the correct setting:
1. DS1 on the RD31 and the RX50's move up to DU1 and DU2.
2. DS3 on the RD31 and the RX50's are DU0 and DU1
I've tried both and it still tries to access the RD31 and the RX50 at
the same time.
Its on a standrd BA23
R
When I had a 11/24 it was in the wider cabinet (small panel to allow access to
terminal cables and such)
the cpu box was in the middle, with drive '1' on top.
Regards,
Ed
--
Ik email, dus ik besta
February 26, 2022 9:14 AM, "Rob Jarratt via cctalk"
wrote:
> I am wondering if I have racked
> -Original Message-
> From: Paul Koning
> Sent: 26 February 2022 19:21
> To: r...@jarratt.me.uk; Robert Jarratt ;
> cctalk@classiccmp.org
> Subject: Re: Racking a PDP-11/24
>
>
>
> > On Feb 26, 2022, at 3:14 AM, Rob Jarratt via cctalk
> wrote:
> >
> > I am wondering if I have
> On Feb 26, 2022, at 3:05 PM, Rob Jarratt wrote:
>
>> ...
>> Hardware stores can fix that. Or Brownells, where you can get really good
>> screwdrivers that are less likely to damage screw heads than standard
>> hardware store ones do.
>
> I am not in the USA, but I am should be able to
A top-mount corporate cabinet looks like this:
http://www.cosam.org/images/pdp11-23/front2.jpg The "DECDatasystem"
front-bar in the photo is over the 1U strengthener that braces the upper
portion of the rack ... since there is no brace at the top (as yours has).
Your cabinet will work fine; in my
On Sat, Feb 26, 2022 at 5:19 PM js--- via cctalk wrote:
> As the chances of success are highly
> improbable, looks like I'm SOL on this
> particular motherboard.
My bench is rather full at the moment and will be for a few more weeks...
But if you get no other help and you can wait a bit, I
I am not in the USA, but I am should be able to look for other screwdrivers
here in the UK. I already have one quite big one, but I think it is still
way too small for this purpose.
How big is it?
For ridiculously large flat-blade screws, look at "drag link socket"s.
For just getting extreme
On 2/25/2022 5:09 PM, Will Cooke via
cctalk wrote:
On 02/25/2022 2:23 PM Paul Berger via cctalk wrote:
The 8048 is a mask programmed part, there is an EPROM version 8748.
While the 8048 is mask programmed I believe that the contents of the ROM
can be dumped.
As Paul said, the 8048 is
> -Original Message-
> From: pbir...@gmail.com
> Sent: 26 February 2022 20:22
> To: r...@jarratt.me.uk; 'General Discussion: On-Topic and Off-Topic Posts'
>
> Subject: RE: Racking a PDP-11/24
>
> A top-mount corporate cabinet looks like this:
>
> On Feb 26, 2022, at 2:19 AM, Noel Chiappa via cctalk
> wrote:
> So, either (console halt, or a HALT instruction) will cause the identical
> response in the processor; see Section 4.10.3 "Halt Grant Requests": the CPU
> sends HLT GRANT to the console, which returns SACK. As long as SACK is
>
> On Feb 26, 2022, at 3:14 AM, Rob Jarratt via cctalk
> wrote:
>
> I am wondering if I have racked my 11/24 correctly.
>
>
>
> As you can see here:
> https://robs-old-computers.com/2022/02/10/pdp-11-24-progress/ I have put the
> CPU at the top and the two RL02 drives underneath.
That
On 2/26/22 12:15, js--- via cctalk wrote:
On 2/25/2022 5:09 PM, Will Cooke via cctalk wrote:
On 02/25/2022 2:23 PM Paul Berger via cctalk
wrote:
The 8048 is a mask programmed part, there is an EPROM version 8748.
While the 8048 is mask programmed I believe that the contents of the ROM
can
On 2022-02-26 16:21, Tony Duell via cctalk wrote:
On Sat, Feb 26, 2022 at 5:19 PM js--- via cctalk wrote:
As the chances of success are highly
improbable, looks like I'm SOL on this
particular motherboard.
My bench is rather full at the moment and will be for a few more weeks...
But if
Thank you for the reply.
> -Original Message-
> From: pbir...@gmail.com
> Sent: 26 February 2022 08:48
> To: r...@jarratt.me.uk; 'Rob Jarratt' ;
'General
> Discussion: On-Topic and Off-Topic Posts'
> Subject: RE: Racking a PDP-11/24
>
> The conventional mounting for RL02 drives in a
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