> On Mar 17, 2018, at 6:57 PM, Fritz Mueller wrote:
>
> I have a question about floating CSR allocation on PDP-11s. Both the 1976
> and 1981 versions of the PDP-11 peripherals handbook indicate the floating
> CSRs are to be allocated starting at address 760010. However, both the XXDP
> FLOA
Hi folks,
I have a question about floating CSR allocation on PDP-11s. Both the 1976 and
1981 versions of the PDP-11 peripherals handbook indicate the floating CSRs are
to be allocated starting at address 760010. However, both the XXDP FLOAT
program and simh's autoconfig suggest I should set m
> On Mar 11, 2018, at 3:55 PM, Fritz Mueller wrote:
>
> I have found it very convenient to maintain a simh configuration that
> parallels the physical hardware configuration of my PDP-11/45. I'm just
> about to add a DR11-C for a physical interface that I am building -- this
> will "grab" a
On 17/03/2018 00:28, Charles Dickman via cctalk wrote:
So the PDP8/e used the KC8-EA programmers console which has
incandescent indicator lamps and the PDP8/f used the KC8-FL
programmers console which has LED indicator lamps.
I have two 8/e machines, one of which has the original panel with
in
On 03/17/2018 09:09 AM, Noel Chiappa via cctalk wrote:
> > From: Allison
>
> > you have to pull the panel apart to replace them, gets tiring. Modern
> > yellow LEDs are nice and bright, and don't burn out.
> > Less digging in the box is a good thing as over time fumble errors can
>
I had a number of these. The construction seemed to be surprisingly flimsy.
If you removed the top cover, check the back corner where all the cards
interface together. These often work loose, making the terminal useless.
Gently but firmly re-align everything and push it all back together. Then
plug
> From: Allison
> you have to pull the panel apart to replace them, gets tiring. Modern
> yellow LEDs are nice and bright, and don't burn out.
> Less digging in the box is a good thing as over time fumble errors can
> hurt it.
Agree about replacing lamps - we switched to LEDs
back in the day (70s) when selling these things 2ed hand E was ind. M
and F were always LED... I preferred the leds Ed#
In a message dated 3/16/2018 7:31:26 PM US Mountain Standard Time,
cctalk@classiccmp.org writes:
On Fri, Mar 16, 2018, 20:58 allison via cctalk
wrote:
> O
