Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!wuarchive!udel!haven.umd.edu!mimsy!dftsrv!oneel From: oneel@heawk1.rosserv.gsfc.nasa.gov ( Bruce Oneel ) Newsgroups: comp.sys.ibm.pc.misc Subject: Re: Upgrading XT motherboard to AT motherboard alone Message-ID: Date: 6 May 91 19:29:05 GMT References: <1991May6.130002.13774@jarvis.csri.toronto.edu> Sender: news@dftsrv.gsfc.nasa.gov Organization: STX/GSFC Nasa Lines: 37 In-reply-to: byu@csri.toronto.edu's message of 6 May 91 17:00:03 GMT In article <1991May6.130002.13774@jarvis.csri.toronto.edu> byu@csri.toronto.edu (Benjamin Yu) writes: Can anyone give a brief description of benefits (if any) in upgrading a 4 MHz XT motherboard to a 12 MHz AT motherboard without changing the 8 bit hard/floppy disk controller and hard/floppy disk? What is the net effect, say in running Pagemaker under Windows 3.0, in terms of actual speedup (again if any)? Thanks! -- Benjamin Yu University of Toronto CSNET, UUCP, BITNET: Department of Computer Science byu@csri.toronto.edu Toronto, Ontario Canada M5S 1A4 byu@csri.utoronto.ca (o)(416)978 - 4299 (h)(416)470 - 8206 {uunet,watmath}!csri.utoronto.edu!byu Can't answer about pagemaker, I can give you ideas otherwise. I had an old (real) ibm/pc with a hard disk installed. I replaced the motherboard with a new 12mhz 286. I had to buy a new floppy disk controller (it was the origional), a new herc card, and a new keyboard. The floppy controller was ~$60, the keyboard was ~$40, and the new herc card was ~$40. The floppy controller and the keyboard were required to be replaced. The herc card wasn't. The herc card worked ok at 6mhz but not at 12mhz. Other than that the only other trick was to tell the bios that I didn't have a hard disk and it works fine. bruce -- | Bruce O'Neel | internet : oneel@heasfs.gsfc.nasa.gov| | Code 664/STX | span : lheavx::oneel | | NASA/GSFC Bld 28/W281 |compuserve: 72737,1315 | | Greenbelt MD 20771 | AT&Tnet : (301)-286-4585 | Thats me in the corner, thats me in the spotlight, losin' my religion -- rem