Aucbvax.1348 fa.info-cpm utzoo!duke!mhtsa!ucbvax!PHOTOG@MIT-MC Thu May 14 01:16:58 1981 I TOYED WITH ADDING SOME INTERRUPT DRIVEN ROUTINES TO MY CP/M AND MY METHOD WAS TO 'PAMPER' ALL DISC BIOS CALLS WITH DI/EI INSTRUCTIONS TO PREVENT PROBLEMS (MY DISC CONTROLLER IS MEMGORY MAPPED WITH WAIT/LINE DERIVED SYNCHRONIZATION) ONLY BAD EFFECT IS THAT YOU MISS AN INTERRUPT HERE, AND AN INTERRUPT THERE... SO I ALWAYS JUMPED TO A POOLL LOOP BEFORE RETURNING TO CALLER ----------------------------------------------------------------- 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.