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OpenVMS Hobbyist Program | VAX Systems Forums | Emulated VAX Forum
Author SimH Network problem

Posts: 12
Joined: 01.03.12
Posted on April 10 2012 10:36

I have SimH and OpenVMS configured and need to get the ethernet to work. I am working on a Ubuntu machine 10.10. I installed Putty and I can not connect to the OpenVMS VAX. I think SimH is having a problem configuring the network adapter correctly.

I downloaded simh with ethernet support. Then I got Libpcap package to build the simh. Once I got the exe for simH done and installed OpenVMS I configured UCX in OpenVMS. I cant get putty to connect to OpenVMS from my linux machine. Sound like SimH is not working correctly.

Here is my vax.ini file.
; Load CPU microcode
load -r /home/x/software/simh/BIN/OpenVMS_Vax/ka655x.bin
; Attach non-volatile RAM to a file
attach nvr /home/x/software/simh/BIN/OpenVMS_Vax/nvram.bin
; This virtual machine has 64M memory
set cpu 64m
; Define disk drive types. RA92 is largest-supported VAX drive.
set rq0 ra92
set rq1 ra92
set rq2 cdrom
set rq3 cdrom
; Attach defined drives to local files
attach rq0 /home/x/software/simh/BIN/OpenVMS_Vax/d0.dsk
attach rq1 /home/x/software/simh/BIN/OpenVMS_Vax/d1.dsk
; Attach the ISO images of drives to its file (read-only)
attach -r rq2 /home/x/software/simh/BIN/OpenVMS_Vax/vaxdisk1.iso
attach -r rq3 /home/x/software/simh/BIN/OpenVMS_Vax/vaxvmscd.iso

; Disable unused devices. It's also possible to disable individual devices,
; using a construction like "set rq2 disable" if desired.
set rl disable
set ts disable
; Attach Ethernet to a network interface
set xq mac=08-00-2B-AA-BB-CC
attach xq eth0
; Now start the emulator
boot cpu

So when i boot into the the SimH VAX.

VAX simulator V3.8-1
NVR: buffering file in memory
RQ: unit is read only
RQ: unit is read only
Eth: opened eth0

KA655-B V5.3, VMB 2.7
Performing normal system tests.
Tests completed.

I do a show of the Ethernet devices and nothing comes up.

>>>show xq eth0

I used the default mac address: 08-00-2B-AA-BB-CC. Is this a problem? Do I use the mac address from my network card instead of the default mac address?

I didnt specify a port number in the vax.ini file. Is that a problem? Can I do that?

What can be the problem?

Do I need to do something in linux?
Author RE: SimH Network problem

Posts: 12
Joined: 01.03.12
Posted on April 11 2012 04:01
I had a problem with Libpcap not being installed. So I installed it on the linux machine from the linux distro package. But still have the problem of getting libpcap to run under simh.

I did a:
sim> at xq ?
ETH devices:
0 eth0 (No description available)
Select device (ethX or <device_name>smiley? ethX
File open error

Is there a way to get libpcap to initiate in SimH. I did compile with the network option enabled when I origially started the project.

Author RE: SimH Network problem

Posts: 12
Joined: 01.03.12
Posted on April 11 2012 05:21
Ok I am looking into building SimH again with network configuration. I am trying to compile with libpcap.a.dylib but that is not located on my Ubuntu Linux 10.10 machine. How can I get this file to install? I installed the Libpcap file libpcap0.8-dev_1.1.1-2_i386.deb. Do I need the libpcap.a.dylib for the make file or can I just use the libpcap.a instead?

Currently I have the vax running with the libpcap.a compiled and its not working with simH. Is this the problem?
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