[Simh] MicroVax 3900 Networking on a Macbook Air

[Mark Pizzolato - Info Comm]

On Friday, October 2, 2015 at 5:21 PM, Zachary Kline wrote:
> I was wondering if anybody could give me some tips on networking with my
> MacBook air. I used to run a virtual VMS system a few years back, but that
> was on Windows and/or Linux, with access to “real,” ethernet devices.
> I’ve since switched to the wifi-only Macbook Air, and it isn’t cooperating very
> well. My copy of TCPIP services fails to get a DHCP lease.
> I know that bridging with wifi adaptors is problematic, but I built with the OS
> X native LibPcap support, and I thought it might help.
> 
> Here is my simh version info
> 
> 	Simulator Framework Capabilities:
> 		64b data
> 		64b addresses
> 		Ethernet Packet transport:PCAP:UDP
> 		Idle/Throttling support is available
> 		Virtual Hard Disk (VHD) support
> 		Asynchronous I/O support
> 		FrontPanel API Version 1
> 	Host Platform:
> 		Compiler: GCC 4.2.1 Compatible Apple LLVM 7.0.0 (clang-
> 700.0.72)
> 		Simulator Compiled: Sep 30 2015 at 21:53:11
> 		Memory Access: Little Endian
> 		Memory Pointer Size: 64 bits
> 		Large File (>2GB) support
> 		SDL Video support: No Video Support
> 		RegEx support for EXPECT commands
> 		OS clock tick size (time taken by msleep(1)): 2ms
> 		OS: Darwin Zacharys-MacBook-Air.local 15.0.0 Darwin Kernel
> Version 15.0.0: Tue Sep 22 20:33:10 PDT 2015; root:xnu-
> 3247.10.11.1.1~1/RELEASE_X86_64 x86_64
> 
>         git commit id: c3a879da
> 
> Show xq eth:
> 
> ETH devices:
>  eth0	en0                                  (No description available)
>  eth1	awdl0                                (No description available)
>  eth2	bridge0                              (No description available)
>  eth3	en1                                  (No description available)
>  eth4	udp:sourceport:remotehost:remoteport (Integrated UDP bridge
> support)
> 
> en0 is the wifi adaptor I’m interested in, and bridge0 is an OS X-provided
> THunderbolt Bridge, which doesn’t seem particularly useful for my purposes.

Johnny's comments and suggestions are right on.  

One way to help get you there might be to use VDE networking. Some folks have used vde for various purposes.  If someone who uses VDE networking provides some guidance we can add more vde specific information to 0readme_ethernet.txt.

- Mark