[Simh] vax750 and simulated hard-wired serial connections and Raspbian

[Alan Perry]

On 5/9/17 10:42 AM, Mark Pizzolato wrote:
> On Tuesday, May 9, 2017 at 10:15 AM, Alan Perry wrote:
>> I am participating in the UUCP project and have set up a SIMH vax750 on a
>> Raspberry Pi. I am using the 4.3BSD bits that the UUCP project lead
>> (Warren) provides to install the system and followed his instructions for
>> configuring it.
>>
>> It uses a simulated hard-wired serial connection to communicate with a
>> remote simulated host over TCP/IP. However, I have not been able to make
>> this connection work. Everything seems good on the simulated VAX. But when
>> I initiate connections to the remote host, I see no corresponding activity on
>> my network.
>>
>> Any suggestions of specific things to check to figure out why nothing is going
>> out to the network?
> To start understanding what is going on, please provide:
> 1) the output of SHOW VERSION executed at the sim> prompt of your simulator.
> 2) the same for the remote simulator.
> 3) The configuration that is being used on BOTH simulators
>
> - Mark
Other that the IP address and port, I don't have info on the other 
remote simulator.

My SHOW VERSION output is:
VAX 11/750 simulator V4.0-0 Beta
     Simulator Framework Capabilities:
         64b data
         64b addresses
         Threaded Ethernet Packet transports:PCAP:TAP:VBE:NAT:UDP
         Idle/Throttling support is available
         Virtual Hard Disk (VHD) support
         RAW disk and CD/DVD ROM support
         Asynchronous I/O support (Lock free asynchronous event queue)
         Asynchronous Clock support
         FrontPanel API Version 4
     Host Platform:
         Compiler: GCC 4.9.2
         Simulator Compiled as C arch: ARM (Release Build) on Apr 29 
2017 at 01:13:50
         Memory Access: Little Endian
         Memory Pointer Size: 32 bits
         Large File (>2GB) support
         SDL Video support: No Video Support
         PCRE RegEx support for EXPECT commands
         OS clock resolution: 1ms
         Time taken by msleep(1): 1ms
         OS: Linux nmtvax 4.9.24-v7+ #993 SMP Wed Apr 26 18:01:23 BST 
2017 armv7l GNU/Linux
         git commit id: 7a46fcf1

My simulator's .ini file:
     set dz lines=0
     set dz 8b
     # Connect some lines to remote servers
     # Connect the remaining lines to listen on port 5000
     attach dz -m -a line=0,Connect=<ip address of remote 
simulator>:<port num for remote service>
     att dz -m -a 5000
     set xu enable
     att xu nat:
     set rq0 ra81
     att rq0 nmtvax.dsk
     att ts nmtvax.tap
     ...

Do you need more of it than this?

The boot disk image, .tap image, and .ini file are generated by a script 
that is part of the UUCP project.

Again, I am not asking anyone to fix this for me. Just asking for 
suggestions on where to look for what could be going wrong.

alan