Aidis.108 net.unix-wizards utzoo!decvax!duke!mcnc!idis!dan Thu Apr 15 17:05:16 1982 re: EMT trap EMT 0345 is an RT11 system entry for converting filename character strings into filename argument blocks for other system entries that open and create files. The error message you received implies that your zork is an rt11 save file running in compatibility mode (as most are). The code in your zork a.out that maintains the rt11 environment should have caught the EMT signal and recognized it as a system call. I can't see how some difference between a 750 and a 780 could cause the program to fail to recognize the system call after it had identified cause of the signal as an EMT 0345. Is your zork known to work correctly on a 780? If you are more interested in running zork than understanding the error, I can offer two alternatives to your version of zork. They are both on the most recent USENIX distribution in subdirectory "pitt". One is a vax native mode binary and the other is an rt11 "emulator" that includes zork as a test file. ----------------------------------------------------------------- gopher://quux.org/ conversion by John Goerzen of http://communication.ucsd.edu/A-News/ This Usenet Oldnews Archive article may be copied and distributed freely, provided: 1. There is no money collected for the text(s) of the articles. 2. The following notice remains appended to each copy: The Usenet Oldnews Archive: Compilation Copyright (C) 1981, 1996 Bruce Jones, Henry Spencer, David Wiseman.