First off, let me explain my full HW/SW:

Hardware:
    SPARCstation ELC
    Sun CDROM
    Micrapolis 669MB disk
    Archive 150MB QIC
    Telebit T2500 connected with modem cable, not an A/B splitter.

Software:
    TDR2 precompiled /netbsd, 24 April 1993
    Kermit 5A(189) 30 June 1993, 4.4 BSD


To force a hang:

        - Buy, beg, borrow or steal a Telebit* T2500 modem.

        - Go thru Kermit to ttya.  Use hardware flow control.
	  (I can't use software flow because I'm a JOVE user)
	  Make sure you're not in PEP mode (where trailing
	  garbage is discarded).

	- Dial in to your favorite site.

	- Read news or do some other high-volume transfer until
	  the kernel complains of "zs0a: silo overflow".

	- Preferably, make this happen more than once during the
	  session.

	- logout from the remote site.  Let finishing garbage
	  mess up your screen.

	- If you can still type at the modem, repeat the process.

	- Otherwise, you are now hung:

	    - Type ^\-H to force kermit to hang up.  It will report
	      "Hanging up...".

	    - Hit your interrupt key.  Kermit will return to the
	      prompt.  Type "quit".  Your terminal is now hung.

	    - Alternatively, type a Control-Z and "kill %".  You will
	      not be able to kill the process.

If you cannot make this happen, maybe it's peculiar to the SLC/ELC
hardware.  If you can make this happen, let me know what solution you
achieve.

Notice:  It may take a while, or it may not, for the overflow to happen
-- it seems to be spurious, and I suspect it happens around the 64K
boundary of passed characters (packets?).

If I have omitted something, let me know.


--
Make a hacker happy.  Use a *real* OS.

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