7 Jun
2019
7 Jun
'19
7:19 p.m.
Wow, I wasn't aware that the ODT console needed memory to run. Checking on
my board, it looks like the 4kw was disabled. I plugged in my 32kw module
with my M8017-AA, and it fired right up to ODT without a hassle. Seems that
was the issue all along.
On Fri, Jun 7, 2019, 3:08 PM Noel Chiappa <jnc at mercury.lcs.mit.edu> wrote:
Hi, sorry I'm slow to do those tests; got
distracted by the power
card stuff.
So I've just dicovered that in a system with _only_ an LSI-11/2,
and a console, ODT doesn't start. I had to plug a memory card in
as well for ODT to work. (Confused the dickens out of me!)
Is the RAM on your CPU card configured off?
Noel
7 Jun
7 Jun
10:10 p.m.
On 06/07/2019 06:19 PM, Mister PDP via cctalk wrote:
Wow, I wasn't aware that the ODT console needed
memory to run. Checking on
my board, it looks like the 4kw was disabled. I plugged in my 32kw module
with my M8017-AA, and it fired right up to ODT without a hassle. Seems that
was the issue all along.
Oh, of course! You can do very elementary checking of a
switch-and-lights PDP-11 with no memory, but creating any
sort of useful program that will run using only ROM and the
8 registers would be VERY challenging. I suspect you might
be able to get it to print some text on the terminal, but
not a whole lot more. Obviously, no way to call a subroutine
without a stack.
Well, glad you found it!
Jon
11:01 p.m.
I missed the part of the thread about the memory being disabled. I think
the 11/05/10 is the only PDP-11 with a few registers on the CPU that you
can run short routines. I also like the built is console SLU.
Paul
On Fri, Jun 7, 2019 at 9:18 PM Jon Elson via cctalk <cctalk at classiccmp.org>
wrote:
On 06/07/2019 06:19 PM, Mister PDP via cctalk wrote:
Wow, I wasn't aware that the ODT console
needed memory to run. Checking
on
my board, it looks like the 4kw was disabled. I
plugged in my 32kw module
with my M8017-AA, and it fired right up to ODT without a hassle. Seems
that
was the issue all along.
Oh, of course! You can do very elementary checking of a
switch-and-lights PDP-11 with no memory, but creating any
sort of useful program that will run using only ROM and the
8 registers would be VERY challenging. I suspect you might
be able to get it to print some text on the terminal, but
not a whole lot more. Obviously, no way to call a subroutine
without a stack.
Well, glad you found it!
Jon
1876
days inactive
1877
days old
2 comments
3 participants
participants (3)
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