Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!uwm.edu!lll-winken!taco!mcnc!ecsgate!ecsvax!cjl From: cjl@uncecs.edu (Charles J. Lord) Newsgroups: comp.sys.ibm.pc.hardware Subject: The Case of the Phantom 80287... Keywords: Works but can't detect it! Message-ID: <1991Mar18.165314.5994@uncecs.edu> Date: 18 Mar 91 16:53:14 GMT Organization: Triangle R&D Corp,RTP,NC Lines: 22 I have two 8Mhz AT 'clones' that both have a strange problem. Both have had '287s in them from the beginning (3-4 years), but recently Norton's SI and a few programs can't detect the coprocessor. It passes the 87test on wuarchive, runs autosketch, QB87, etc but won't run a commercial program from Data Translation (compiled in God knows what) with an error (FP not installed). CMOS shows "coprocessor installed". I have switched from PCDOS3.1 to 3.3 in the last six months and added a JDR-MCT secondary floppy controller with 1.44MB bios add-on - could either one of those changes have screwed up the INT2 handling? I know, I know.. pull them out, boot up with 3.1 and see. BTW, the board was from Golden State Computers and "packaged" by the now defunct Computer Components Corp out of RTP, NC. Hints? Anyone heard of a coprocessor that worked fine but couldn't be detected by some programs? Obviously different folks look for it in different ways... -- * Charles Lord ..!decvax!mcnc!ecsvax!cjl Usenet (old) * * Cary, NC cjl@ecsvax.UUCP Usenet (new) * * #include cjl@ecsvax.BITNET Bitnet * * #include cjl@ecsvax.uncecs.edu Internet *