From: utzoo!decvax!duke!ndd Newsgroups: net.micro Title: apple i/o slots Article-I.D.: duke.2250 Posted: Fri Jun 18 21:25:27 1982 Received: Sat Jun 19 04:45:32 1982 I appreciate the responses I got on referencing Apple i/o slots from Pascal. It seems that the method of choice is to use a variant (aka TRIX) record which can be an integer (for the slot address) and a pointer (to reference the slot). There are two excellent articles, with programs, in BYTE magazine: Feb. 1981 and July 1981. Both resort to assembler, but the second article uses much less than the first. Ned Danieley duke!ndd