Loading an OS onto a real PDP-11 - not an emulator

[Allison]

>
>Subject: Re: Loading an OS onto a real PDP-11 - not an emulator
>   From: Dave McGuire <mcguire at neurotica.com>
>   Date: Sun, 23 Mar 2008 13:40:14 -0400
>     To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org>


I don't write all that...!

>On Mar 23, 2008, at 7:49 AM, Allison wrote:
>>> Following the wonderful advice so for, My shiny PDP 11/04 has now been
>>> upgraded to a 11/34, and I have a temporary terminator pack for my 
>>> RL01
>>> disk drive.
>>>
>>> I suspect that I have a system that is capable of booting. - Wo Hoo.
>>> (read - the disks spin, and the fault light stays off.....)
>>>
>>> My final problem (Dont hold me to that though) is that I while I have 
>>> a
>>> number of disk packs, I don't believe that I have anything to boot!!
>>> The packs are not really usefully labeled.
>>>
>>> Having trawled the list, I can find many many messages about archiving
>>> data off RL disk packs, and onto archival systems (such as emulators,
>>> etc) - bit I cant find anything about how to take a disk image, and 
>>> put
>>> it onto an real RL01 attached to real PDP11 where there is no other
>>> media...  I suspect that I have to load in a serial receiver program,
>>> and dump an image - but the details are so far, sparse....
>>>
>>> If somebody could provide some pointers - that would be awesome.....  
>>> In
>>> an ideal world, I would be able to get RSTS onto this system (I have
>>> dual RL01's - so that may not work) - Alternately, just being able to
>>> boot RT11 to load a Forth interpreter would also work. [Yes, this is
>>> where I admit to being a Forth person - I hope people will still want 
>>> to
>>> talk to me having admitted that]
>>

I did write this.

>> Two ways I know of and they are essentailly the same.  Create a pack 
>> on a
>> working system or bring up a pack from a working sytems.  Other options
>> are a floppy based bring up (RT11 fits on floppy) or maybe loading core
>> via serial line with a bottable image.  Last option is emulateted Tu58
>> where the PC acts as a TU58 with RT11 and you use a serial line to boot
>> and run fromt hat to create a RL pack.  IN any case I don't think 
>> anyone
>> has come up with a way to write a RL from a PC directly.  Generally 
>> every
>> one has at least one other media (RX01/2 or RX50 OR TK50, TUxx) for
>> portability.
>>
>> It's look at the option where someone creates a pack for you or loans
>> a pack or the emulated TU58 option.

This works!

>   Using vtserver is a good option here.  Though I'm currently having 
>trouble with it with an 11/23 I'm trying to load with RSTS/E, I've had 
>good luck with it in the past with RSTS/E and 2.11BSD on an 11/83.  I 
>think my 11/23's console SLU is somehow flakey and screwing with data 
>transfer.

Slow the data rate.  Stay under 4800 as you may be getting buffer overflows.



Allison

>           -Dave
>
>--
>Dave McGuire
>Port Charlotte, FL