[Simh] simh and tap device under linux

[ttmrichter at gmail.com]

On Aug 24, 2009 8:34am, Jason Stevens <neozeed at gmail.com> wrote:
> Also on SIMH make sure your 'ethernet is bound...

> sim> show xq eth

This is interesting and ties into problems I've been sporadically looking  
at in my spare time. (I'm trying to get a fully functioning RSTS/E 9.x  
environment running.) I was unable to get the telnet linking to the virtual  
terminals and shelved figuring that out until later. Seeing this, however,  
piqued my curiosity and got me to try it.

With a freshly-built PDP-11 emulater (3.8-1):

gcc -std=c99 -U__STRICT_ANSI__ -g -lrt -lm -D_GNU_SOURCE -I .  
PDP11/pdp11_fp.c PDP11/pdp11_cpu.c PDP11/pdp11_dz.c PDP11/pdp11_cis.c  
PDP11/pdp11_lp.c PDP11/pdp11_rk.c PDP11/pdp11_rl.c PDP11/pdp11_rp.c  
PDP11/pdp11_rx.c PDP11/pdp11_stddev.c PDP11/pdp11_sys.c PDP11/pdp11_tc.c  
PDP11/pdp11_tm.c PDP11/pdp11_ts.c PDP11/pdp11_io.c PDP11/pdp11_rq.c  
PDP11/pdp11_tq.c PDP11/pdp11_pclk.c PDP11/pdp11_ry.c PDP11/pdp11_pt.c  
PDP11/pdp11_hk.c PDP11/pdp11_xq.c PDP11/pdp11_xu.c PDP11/pdp11_vh.c  
PDP11/pdp11_rh.c PDP11/pdp11_tu.c PDP11/pdp11_cpumod.c PDP11/pdp11_cr.c  
PDP11/pdp11_rf.c PDP11/pdp11_dl.c PDP11/pdp11_ta.c PDP11/pdp11_rc.c  
PDP11/pdp11_kg.c PDP11/pdp11_ke.c PDP11/pdp11_dc.c PDP11/pdp11_io_lib.c  
scp.c sim_console.c sim_fio.c sim_timer.c sim_sock.c sim_tmxr.c sim_ether.c  
sim_tape.c -DVM_PDP11 -I PDP11 -DUSE_NETWORK -isystem /usr/local/include  
/usr/local/lib/libpcap.a -o BIN/pdp11

I'm seeing the following behaviour:

$ BIN/pdp11

PDP-11 simulator V3.8-1
sim> show xq eth
ETH devices:
no network devices are available
sim>

This would certainly explain why I'm not getting my telnet connections  
linking to the simulated terminals. Poring over the docs, however, I simply  
cannot figure out what, if anything, extra I'm supposed to be doing to get  
this functioning.

What am I missing in the docs and where do I find it?
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