Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!zaphod.mps.ohio-state.edu!pacific.mps.ohio-state.edu!linac!midway!chsun1!lee From: lee@chsun1.uchicago.edu (Dwight A Lee) Newsgroups: comp.sys.apple2 Subject: Re: Integer Basic program Message-ID: Date: 27 Nov 90 05:47:15 GMT References: <1990Nov27.045912.4101@clark.edu> Sender: news@midway.uchicago.edu (News Administrator) Organization: University of Chicago Lines: 34 tim.c@pro-freedom.cts.com (Tim Craven) writes: [can't run Integer BASIC program from ProDOS subdirectory even thought INTBASIC is there too] Unless something strange has happened that I don't know about, Integer BASIC is not supported under ProDOS. See, that INTBASIC file that works under DOS 3.3 goes into the memory whose address space is shared by Applesoft, and DOS 3.3 switches between the two with FP and INT. Since ProDOS already uses that memory, attempts to overwrite it will probably result in a crash, or a memory protection error if those sections of memory are included in the system global page memory map (I don't remember these things too well in my old age). Anotherwards, it can't be done easily. Your best bet is to convert that Integer BASIC program into Applesoft and go from there. Unless the program uses hires graphics or imbeds raw code in the program load, it shoudn't be much of a problem. On the other hand, if the program is the size of Apple-Trek, it might be rather time-consuming. Another interesting avenue might be to conjure up one of those Integer BASIC compilers (wasn't there one called FLASH?) and use the executable under ProDOS. Wondering what happens when the level gets to zero in Ceiling Zero, Dwight A Lee -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Dwight A Lee / lee@chsun1.uchicago.edu / T902038@NIUCS.BITNET / tCS/BB / Font I speak only for myself. / "I am not the only dust my mother raised" - TMBG Twilight, skylight, chair and hues, / Can words describe what dream imbues?