Article 167098 of comp.os.vms:
In article <5i3ao7$i3q@milo.mcs.anl.gov>, scandora@cmt.anl.gov (Tony Scandora 630-252-7541) writes:
> 
> I just remembered a fourth option.  You can patch NETACP.TSK on the old system
> with ZAP.  The only problem with that is I can't remember what the patch was
> and my notes are long gone.
> 
> Tony Scandora, Argonne National Lab, 630-252-7541
> scandora@cmt.anl.gov

  Below is a note written by Brian Tillman, then of Smiths Industries,
posted to the PAGESWAPPER notes conference in 1988, regarding the
problem & how to patch it (on M at least, although it would probably
be a similar patch for M+).

Lee K. "RSX rules" Gleason N5ZMR
Control-G Consultants
gleason@mwk.com

*********************************************************************


Well, here is is, the RSX patch to allow your old RSX-11M (note:
NOT M-Plus, although I suspect a similar approach would work 
there, too) to talk to your VMS V5.0 system.
     
I talked to Colorado and they said, "Well, DECUS will get it 
sooner or later, anyhow.  Sure, you can tell 'em.  If they have 
a service contract, just tell them to call us and we'll be glad 
to share the patch, but there are probably some who don't have a 
service contract."
     
Keep in mind that this is a totally unsupported patch.  Using it 
will make your system unsupported as well.
     
This is the method to correct NETACP.  First, *make a copy of 
your current NETACP!*  Then make an ASCII dump.  You'll need to 
look for something.
     
> set/uic=[5,54]
> pip netacp.org=netacp.tsk
> dmp netacp.txt=netacp.tsk
     
Then, use EDT (or whatever) to locate a word containing 032705 
followed by a word containing 177774 and followed by a word 
containing 001xxx (where xxx doesn't really matter.  I found 
mine in block 14, starting at offset 130.  This is a test of the 
proxy flag and we are going to NOP it.  Get into ZAP (absolute 
mode) and let's get rid of the offending test.  Note: in the 
example below, the underscore is what I'm using for ZAP's 
prompt.  I don't know don't know if, in the absolute mode ZAP 
prompts with "ZAP>" or not.
     
> zap
ZAP> netacp.tsk/ab
_ 14:130/	; the system should show you 032705 
_ 240		; NOPs the first word
_ <CR>		; should show you 177774
_ 240		; NOPs the second word
_ <CR>		; should show 001xxx
_ 240		; NOP the last word
_ ^Z		; CTRL-Z out.
>
     
Now, I have NETACP.TSK VMRed in, so I have to create a new 
system to find the patched version.
     
> set/uic=[1,54]
> pip rsx11m.sys/co/nv/bl:498.=rsx11m.tsk 
> vmr @sysvmr
> set/uic=[5,54]
> vmr @netvmr
> set/uic=[1,54]
> boo rsx11m
XDT> g
> time hh:mm dd-mmm-yy
> time	; to verify the time got set and I'll likely reboot 
> sav /wb
     
Now I reboot, my STARTUP.CMD runs, which sets my DECnet executor 
on, and lo and behold, VMS V5.0 can connect to my heart's 
content!
     


