[Simh] SIMH on Mac OS with networking

Robert Bustichi robert at smrn.com
Wed Aug 11 10:45:53 EDT 2010


I'm trying to get SIMH to work on OSX (Snow Leopard 10.6) running 
OpenVMS 7.3, but I can't get the networking to work.

I have SIMH built with networking support, OpenVMS 7.3 installed and 
running.  I have the IP stack configured and running (TCPWare) but there 
is no IP traffic in our out.

 From OSX, a "netstat -i" shows the physical Ethernet adapters 
installed.  It looks to me that EN1 is the correct Ethernet device to use.

netstat -i
Name  Mtu   Network       Address            Ipkts Ierrs    Opkts Oerrs 
  Coll
lo0   16384 <Link#1>                        424099     0   423789     0 
     0
lo0   16384 localhost   ::1                 424099     -   423789     - 
     -
lo0   16384 localhost   fe80:1::1           424099     -   423789     - 
     -
lo0   16384 127           localhost         424099     -   423789     - 
     -
gif0* 1280  <Link#2>                             0     0        0     0 
     0
stf0* 1280  <Link#3>                             0     0        0     0 
     0
en0   1500  <Link#4>    00:25:4b:d3:6a:f6        0     0        0     0 
     0
en1   1500  <Link#5>    00:25:00:4e:3e:2b    11792     0     5464     0 
     0
en1   1500  robert-bust fe80:5::225:ff:fe    11792     -     5464     - 
     -
en1   1500  192.168.100   192.168.100.113    11792     -     5464     - 
     -
en1   1500  2002:639a:7 2002:639a:7091::2    11792     -     5464     - 
     -
kvnet 1446  <Link#6>    44:45:53:54:4f:53        0     0        0     0 
     0
fw0   4078  <Link#7>    00:25:4b:ff:fe:d3:6a:f6        0     0        0 
     0     0
en2   1500  <Link#8>    00:26:08:b7:36:c2        0     0        0     0 
     0
vmnet 1500  <Link#9>    00:50:56:c0:00:08        0     0        0     0 
     0
vmnet 1500  192.168.7     192.168.7.1            0     -        0     - 
     -
vmnet 1500  <Link#10>   00:50:56:c0:00:01        0     0        0     0 
     0
vmnet 1500  192.168.113   192.168.113.1          0     -        0     - 
     -

Starting SIMH (using sudo for root privs).

sim> show version
VAX simulator V3.8-1 [64b data, 64b addresses, Ethernet support]
sim> show xq eth
ETH devices:
   0  en0 (No description available)
   1  en1 (No description available)
   2  en2 (No description available)
sim> attach xq en1
Eth: closed en0
Eth: opened en1
sim> show xq
XQ, address=20001920-2000192F, no vector, MAC=08:00:2B:AA:BB:CC, 
type=DELQA, poll=100, attached to en1
sim>

One item that bothers me is the "no description available" from the show 
xq eth output.  Not sure if this is the main issue or not, as I'm not 
familiar how PCAP works or if I need to have a specific version.

After booting VMS and starting TCPWare, I can't ping (to/from) or any 
other network services.  VMS sees the XQA-0 device.

I have read the info at HoffmanLabs 
(http://labs.hoffmanlabs.com/node/922), but the links are dead for the 
tun/tap discussion.  I'm not very familiar with OSX/Unix to use some of 
the generic tun/tap implementations that I found (I would need step by 
step instructions).

Thanks in advance if someone can point me in the right direction to get 
networking to work.

- Robert



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