T_WADE@CSVAX.UCD.HEA.IRL (08/21/87)
I would be interested in hearing from anyone who has written a user output routine to replace the main output routine in the print symbiont. I have done this, but the symbiont exits with an access violation AFTER my output routine has successfully completed with SS$_NORMAL for the first output record. I would like to see a working output routine to see if there is anything I am misunderstanding. Many thanks. ------------------------------------------------------------------------- Tom Wade Hea: twade@ccvax.ucd.hea.irl Systems Programmer Ean: twade@ccvax.ucd.irl Computer Center PSI: PSI%+27243154000712::TWADE University College Dublin Telex: (0500) 91196 UCD EI Ireland. Uucp: !mcvax!euroies!twade%ccvax.ucd.hea.irl Voice: +353-1-693244 Ext 2456 Bitnet: twade@irlearn.bitnet -------------------------------------------------------------------------
tli@sargas.usc.edu (Tony Li) (08/22/87)
We have a working (but not completely bug-free) modified symbiont that is written in C. The best way of writing/debugging this type of problem is to set yourself up so that you can use the debugger. The modified symbiont is run as part of a detached process. By reassigning DBG$INPUT and DBG$OUTPUT (in the system table), you can run the debugger on it and yes, even see source. By the way, before you ask, our print symbiont does something very site-specific. ;-) Tony Li - USC University Computing Services "Fene mele kiki bobo" Uucp: oberon!tli -- Joe Isuzu Bitnet: tli@uscvaxq, tli@ramoth Internet: tli@sargas.usc.edu