[Simh] {Spam?} transferring files to and from v6 unix running in pdp11 emulator

[Will Senn]

On 11/20/15 1:22 PM, Anders Magnusson wrote:
> Den 2015-11-20 kl. 20:12, skrev Will Senn:
>>
>>
>> On 11/20/15 10:51 AM, Anders Magnusson wrote:
>>> Den 2015-11-20 kl. 17:35, skrev Will Senn:
>>>> Hi,
>>>>
>>>> I have searched and searched and have not found a satisfactory 
>>>> answer to this question:
>>>>
>>>> How can I efficiently copy files from my host system to unix 
>>>> version 6 running in the pdp11 emulator and from unix 6 to my host 
>>>> system?
>>> I usually do this by just tar'ing to/from a disk file, something like:
>>>
>>> on pdp11: tar cf /dev/rxp0c myfiles
>>> on host: tar xf simh-disk-file
>>>
>>> Works both ways :-)
>>>
>>> -- Ragge
>> Hi,
>>
>> This sounded promising, but as it turns out there appear to be 2 
>> problems... 1. v6 doesn't have tar, and 2. it looks like v6 doesn't 
>> have rx device support (floppies). Are you using v6 with tweaks, or 
>> v7, or some other variant of unix?
> Hm, it was some time ago, but I think it was tar.  Otherwise try cpio?
> You do not have to use floppies.  rxp is the raw device for rp disks 
> (avoids caching).  Just work against that file.
>
To close the loop on this, I have been able to follow the closing advice 
in "Setting up Unix - Seventh Edition" and use its v6tar on v6. It 
appears to require split I+D, so I had to "upgrade" from the 11/40 to an 
11/45 or 11/70 (both work). It requires the the kernel be recompiled 
with separate I+D support with m45.s and such, but pretty 
straightforward. I haven't done a lot of copying yet, but at least I am 
able to share between v6 and v7. I have also worked out a couple of 
different ways to move files to and from the host that involve the disk 
or tape. I wrote a perl script to read a SimH tape into its constituent 
files that works ok as a way to transfer files as well (clunkier than 
tar and such, but it was a good learning exercise).

Thanks,

Will