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From: john@hpcvlo.HP.COM (John Eaton)
Newsgroups: comp.sys.ibm.pc
Subject: Re: turbo systems (how to toggle; reply)
Message-ID: <1610027@hpcvlo.HP.COM>
Date: Wed, 5-Aug-87 18:42:52 EDT
Article-I.D.: hpcvlo.1610027
Posted: Wed Aug  5 18:42:52 1987
Date-Received: Sat, 8-Aug-87 11:58:57 EDT
References: <1799@bellcore.bellcore.com>
Organization: Hewlett-Packard Co., Corvallis, OR, USA
Lines: 12

<<<<<
<
< The BIOS controls the clock speed by toggling the appropriate 8255 output.
<
Clock switching with the F/C~ line is easy if you don't care about runt
pulses during the switch. The problem is that most processors do care.
Do any turbo machines actually sync the clock during the switch to prevent
bad clock problems?


John Eaton
!hplabs!hp-pcd!john