Date   : Sat, 08 Sep 1984 21:15:00 MDT (Sat)
From   : Keith Petersen <W8SDZ@Simtel20.ARPA>
Subject: New MX-SM13A overlay for MEX/Anchor XXII modem

MX-SM13A.ASM for MEX is now available from SIMTEL20:

       Filename                Type     Bytes   CRC

MICRO:<CPM.MEX>
       MX-SM13A.ASM.1          ASCII     9335  1E83H

The author of this update explains his changes in a message to Ron
Fowler:

Msg 132 is 12 line(s) on 09/08/84 from BOB SANDEL
to RON FOWLER about MODIFIED SM-13 TO STOP HANGUPS

Ron, Although the SM-13 overlay worked quite well for me with MEX10,
I started experiencing a lot of Anchor XII hangups when I implemented
MEX111.  Seems like MEX111 is too fast to allow a proper disconnect of
the Anchor.  I experimented and have U/L MX-SM13A (A for Anchor) which
has added 3 CALLs to DISCON before turning control back to MEX111.
Seems to works a lot better for me---let's see how others do with the
alteration.  I speeded up the DISCON times to 1.2 seconds from 2.0
seconds.  Still having some difficulty recogninzing a Control C when
in the auto-repeat dial mode.  Currently only about 50% effective.
Thx for a powerful modem executive. Bob