Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!brutus.cs.uiuc.edu!usc!snorkelwacker!bloom-beacon!eru!luth!sunic!mcsun!hp4nl!rulcvx!rulcs!kranenbu
From: kranenbu@.uucp (Paul Kranenburg)
Newsgroups: comp.protocols.tcp-ip.ibmpc
Subject: Token Ring Packet driver and "tokreui".
Message-ID: <341@rulcs.cs.rul.nl>
Date: 25 Dec 89 13:43:10 GMT
Sender: kranenbu@rulcs.uucp
Organization: Dept. C. Sc., Leiden, NL
Lines: 23

A small oversight in the Token Ring Packet driver (from the clarkson archive)
prevented it from working with the "tokreui" program which we still use
at our site.

The problem: the _receiver interrupt procedure fails to reset the direction
bit used in string instructions.

After this patch, everything seems to work as advertised, which means
that we finally we have some connectivity we long sought after.

Here is the diff:

*** ibmtoken.asm.orig   Wed Dec 13 11:42:56 1989
--- ibmtoken.asm        Mon Dec 25 14:14:10 1989
***************
*** 986,991 ****
--- 986,992 ----
                 and     al,not_SA_mask          ; drop SA indicator
                 mov     es:[di],al              ; fix the bit during compare
  
+                cld
                 repe    cmpsb                   ; do string compare now
                 jne     not_mine