Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!cs.utexas.edu!tut.cis.ohio-state.edu!att!att!mcdchg!laidbak!obdient!vpnet!cgordon From: cgordon@vpnet.chi.il.us (Gordon Hlavenka) Newsgroups: comp.sys.ibm.pc.hardware Subject: Re: AT or XT286? Message-ID: <27077f4b-2aa.2comp.sys.ibm.pc.hardware-1@vpnet.chi.il.us> Date: 1 Oct 90 17:55:04 GMT References: <4459@bwdls58.UUCP> Lines: 37 >Could someone out there tell me the difference between an IBM XT286 >and an AT? My own computer is an XT286, but so far I haven't found >anything that makes it different from a 'normal' AT. Any suggestions? I used an XT 286 for a couple of years. As I recall, the only difference between this machine and an AT was the case size and (perhaps) clock speed. I believe the AT also had a larger hard drive. There were 16-bit slots, the BIOS was IBM's AT BIOS, even the setup disk was labelled "IBM AT / XT 286." >Apart from the lack of 16-bit slots, the big difference is usually the BIOS. I did not find either of these assertions to be correct. >XT/286's usually do not support the full functionality of an AT-bios, with >its added function calls and extended memory support. All AT calls supported. I used many of them myself. >Also, XT/286's require >an XT style disk controller, with on-card bios for controlling the hard >drives. Wrong again. My XT 286 used a 20MB drive which was referred to in SETUP as "Type 13." No BIOS extension on the controller. > ___Mark S. Lord__________________________________________ >| ..uunet!bnrgate!mlord%bmerh724 | Climb Free Or Die (NH) | >| MLORD@BNR.CA Ottawa, Ontario | Personal views only. | >|________________________________|________________________| Is probably referring to an XT system with a 286 accelerator card installed. I'm referring to the actual IBM machine (briefly marketed) called the "XT 286." Different animal. ----------------------------------------------------- Gordon S. Hlavenka cgordon@vpnet.chi.il.us Disclaimer: Yeah, I said it. So what?