Re: RSX

[Paul Koning <pkoning@xedia.com>]

>>>>> "Ed" == Ed Calderon / Eq Eng ww Support <ecc@cypress.com> writes:

 Ed> With 2.04, I read that rtermd would support older software.

That's the theory, but there's more to it than that simple statement
would suggest...  Read on...

 Ed> Summary of problems I experienced in dnprogs-2.02, tested w/2.04:

 Ed> SETHOST: I tried to 'sethost RSX11M', and got "RSX flavour not
 Ed> yet implemented", is this in the works?  This used to crash
 Ed> RSX11M before!

Well, I'd like to make a stab at it.  There are two issues that make
it go slowly: (1) I don't have any RSX systems, (2) while I can read
RSTS code to reverse-engineer the protocol, that's a rather big job
because the RSX sethost protocol seems to be a whole lot more complex
than the RSTS and TOPS-20 flavors.  It probably won't happen all that
soon.  Do you read Basic-Plus-2?  If so I could send you some code to
reverse engineer...

 Ed> RMT: Tried from RSX11M 'rmt declnx' and got RMT - remote host
 Ed> incompatibility error

I can believe that.  See if there's a version of RMT that supports
non-RSX hosts.  In particular, you'd need one that supports TOPS-20
hosts, because rmtermd uses that variant of the remote terminal
protocol.  With RSTS, the out-of-the-box version of set host doesn't
do this (it's RSTS only) but there's an unsupported version you can
install that does.  I don't know if the same thing applies in RSX; if
so, that will be your solution.  If not, life gets painful because
there isn't any way that I know of for the client to tell the daemon
what version it wants to be used!  So, unless someone were to write
an "rsxrmtermd" that speaks the server side of the RSX protocol, it's
up to the client to conform to what the daemon proposes to do.  By the 
way, an rsxrmtermd would be a hassle because the Unix style terminal
driver behavior is quite different from that of RSX.  But it matches
much more closely what TOPS-20 does, which is why that version was
used. 

 Ed> DNPING: from RSX11M to linux 'ncp loop' worked, as with prior
 Ed> dnprogs from Linux to RSX11M worked, this would crash RSX11M
 Ed> before

 Ed> can I dnping all nodes in my decnet.conf? lime 'mcr ncp sho kno
 Ed> nodes'

Unless RSX does something very unusual, that's not what that command
means.  It simply means "show me all the configured nodes" but it
doesn't tell you whether you can talk to them.

	paul
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