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