Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!rutgers!mailrus!cornell!rochester!ritcv!cci632!ccicpg!billm From: billm@ccicpg.UUCP (Morita Bill) Newsgroups: comp.sys.ibm.pc Subject: IBM-XT Floppy upgrade Summary: HELP! Keywords: IBM-XT Floppy Message-ID: <19592@ccicpg.UUCP> Date: 12 Aug 88 05:04:59 GMT Reply-To: billm@ccicpg.UUCP (Morita Bill) Organization: CCI CPG, Irvine CA Lines: 23 References: I am having trouble converting an old IBM-XT from a configuration of a single floppy (360k) and a single hard disk (20 Mb). The configuration I originally had worked fine until the full height IBM floppy drive died. I replaced it with two Tandon half-height floppies (model 50-2). The floppy controller is some unknown manufacture (I can't find any markings on the board). The cable is the type with the "half-twist". I have terminated things according to the instructions recieved with the drives. The problem is this: Only ONE drive will work, e.g. the first drive (the "a:" drive). Both floppy drives function correctly when placed in the "a" drive position on the cable. The cable checks out in that I can plug it in swapped end-for-end and the "a" drive functions correctly. The only conclusion I can come to is that there must be some hardware change necessary. Like a DIP switch on the floppy controller or the mother board. None of the software can "see" the second drive. Maybe I need a new BIOS ROM??? Any help that anyone can give me would be much appreciated. Thanks (in advance) Bill Morita