[Simh] Unix v7 tty terminals in SimH pdp11

[Will Senn]

OK. Figured it out and updated my instructions to reflect the changes:

https://drive.google.com/open?id=0B1_Jn6Hlzym-Zmx1TjR3TENDQTA

basically in V7:
cd /usr/sys/conf
echo 4dc >> hptmconf
mkconf < hptmconf
make unix
mv unix /munix
ed /etc/ttys
2,5s/./1/
w
q
/etc/mknod /dev/tty00 c 3 0
/etc/mknod /dev/tty01 c 3 1
/etc/mknod /dev/tty02 c 3 2
/etc/mknod /dev/tty03 c 3 3
chmod 640 /dev/tty0?

then in simh.ini
add
set dci en
set dci lines=4
att dci 2222

then in the host:
telnet localhost 2222 a couple of times from separate terminals

fire it all up and voila, it works. I am always amazed how much time I 
can spend retreading others paths or even roads I've walked before. I'm 
closing the loop here in case somebody finds this thread and can benefit 
from the answer. Figured a lot of this out the hard way, then the rest 
was thanks to Clem Cole and finally, this note summed it up nicely: 
http://a.papnet.eu/UNIX/v7/Installation.

Later,

Will

On 10/14/17 8:56 AM, Will Senn wrote:
> Thanks, Johnny. I found my notes on when I did this in V6. I had the 
> following in my ini file:
> set dci en
> set dci lines=8
> set dco 7b
> att dci 5555
>
> and when I boot V6 and telnet into it I get this:
> telnet localhost 5555
> Trying ::1...
> Connected to localhost.
> Escape character is '^]'.
>
>
> Connected to the PDP-11 simulator DCI device, line 0
>
>
> login: dmr
> Login incorrect.
> Name: root
> #
>
> Which is great. I tried the same in V7 after editing /etc/ttys, which 
> is different in V7 than V6, having lines like:
> 14console
> 00tty00
> 00tty01
>
> Which I changed to:
> 14console
> 10tty00
> 10tty01
>
> After reboot, no go though. The telnet session is unresponsive.
>
> Any ideas?
>
> Thanks,
> Will
>
> On 10/14/17 2:14 AM, Johnny Billquist wrote:
>> I haven't played with V7, but I assume there must either be an 
>> /etc/ttys, or something similar, which tells Unix on which terminal 
>> lines to start a login process at boot. Otherwise they are going to 
>> be very silent.
>>
>> Also, remember to hit enter, as they will not spontaneously print out 
>> a prompt just because you telnet in. They have already printed a 
>> prompt when the login program started.
>>
>>   Johnny
>>
>> On 2017-10-14 06:13, Will Senn wrote:
>>> Hi,
>>>
>>> It's been a while since I used SimH pdp11 to do anything beyond boot 
>>> Unix V6/V7 for a single user. I would like to be able to use the V7 
>>> system in multiuser mode with multiple users and I can't quite wrap 
>>> my mind around the problem, so I am asking y'all for help. I am sure 
>>> I'm butchering the discussion as I'm a bit unclear on what device is 
>>> doing what, but ultimately I want to be able to telnet locally to a 
>>> port that the running Unix Version 7 will respond to with a TTY that 
>>> I can log in to. According to the document Setting Up Unix - Seventh 
>>> Edition by Charles B. Haley and Dennis M. Ritchie, V7:
>>>
>>> The DC11 driver is set to run 4 lines. This can be changed in dc.c.
>>> The DH11 driver is set to handle 3 DH11's with a full complement of 
>>> 48 lines. If you have less, or more, you may want to edit dh.c.
>>> The DN11 driver will handle 4 DN's. Edit dn.c.
>>> The DU11 driver can only handle a single DU. This cannot be easily 
>>> changed.
>>> The KL/DL driver is set up to run a single DL11-A, -B, or -C (the 
>>> console) and no DL11-E's. To change this, edit kl.c to have NKL11 
>>> reflect the total number of DL11-ABC's and NDL11 to reflect the 
>>> number of DL11-E's. So far as the driver is concerned, the 
>>> difference between the devices is their address.
>>>
>>> This sounds promising as these seem like terminals to me and each 
>>> has plenty of lines if only I could get simh to serve up the devices 
>>> and attach them to telnet ports, and if Unix will actually provide 
>>> ttys on those devices.
>>>
>>> I read the docs and tried adding variations of:
>>>
>>> set dli lines=4
>>> attach dli 3633
>>> set dlO0 nodataset
>>> set dlO1 nodataset
>>>
>>> to my pdp11 boot.ini file, as well as dc versions of the above and 
>>> and and...
>>>
>>> I telneted to port 3633 locally after each reconfiguration, but 
>>> didn't get any unix output on the telnet session.
>>>
>>> I appreciate any helpful comments or suggestions.
>>>
>>> Thanks,
>>>
>>> Will
>>>
>>>
>>
>

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