Path: utzoo!utgpu!attcan!uunet!lll-winken!lll-tis!ames!mailrus!uwmcsd1!leah!bingvaxu!marge.math.binghamton.edu!sullivan From: sullivan@marge.math.binghamton.edu (fred sullivan) Newsgroups: comp.sys.ibm.pc Subject: Re: Help needed Message-ID: <1365@bingvaxu.cc.binghamton.edu> Date: 9 Aug 88 14:43:28 GMT References: <6177@pyr.gatech.EDU> <7913@cup.portal.com> <8167@watdragon.waterloo.edu> Sender: news@bingvaxu.cc.binghamton.edu Reply-To: sullivan@marge.math.binghamton.edu (fred sullivan) Organization: Dept. of Mathematical Sciences, SUNY at Binghamton Lines: 19 In article <8167@watdragon.waterloo.edu> dmnhieu@watdragon.waterloo.edu (Duy-Minh NHIEU) writes: >I have a XT clone that can be switch to 8mhz (Turbo) from the keyboard, >however, after a software initialize to the text mode, I am drop back to >the 4.77mhs mode, the keyboard switch consists of pressing >Ctrl alt - (Control, alternate, minus) at the same time, can any one tell >me > 1) how to "lock" to the 8mhz mode? > 2) how to write a program (in asm or TP4 or in C) to do the switching? > rather than pressing the 3 keys? (and the turbo mode can be entered > from turn on the computer?) I suspect that this is HIGHLY machine dependent. My PC's Limited Turbo PC has a dip switch which "locks" the machine in 8 MHz mode. The manual also described how to do it with software, but I just found switching to be annoying. After about 3 weeks, I took off the cover, flipped the switch, and have been happily running at 8 MHz ever since. Fred Sullivan SUNY at Binghamton Dept. Math. Sciences Binghamton, NY 13903 sullivan@marge.math.binghamton.edu First you make a roux!