Path: utzoo!utgpu!water!watmath!clyde!att!ucbvax!vm.uoguelph.ca!BOTCHAIR From: BOTCHAIR@vm.uoguelph.ca (Alex Bewley) Newsgroups: comp.lang.modula2 Subject: Re: Interlanguage access Message-ID:Date: 21 Aug 88 17:20:49 GMT References: Sender: daemon@ucbvax.BERKELEY.EDU Reply-To: Info-Modula2 Distribution List Organization: The Internet Lines: 20 > This is about accessing C routines from Logitech Modula-2 You need version 3.0. There is a SYSTEM routine called EXTCALL, and you can use that to access other language routines. But all parameter passing must be done using CODE statements before the call. For example: (* call a 'C' routine *) SETREG(AX,10); CODE(PushAX); SETREG(BX,20); CODE(PushBX); EXTCALL("_larger"); (* let's say returns -1 if ab *) GETREG(AX,Result); IF (Result # 0) THEN ... The routine is linked in with all the other modules at link-time. Alex