Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!uunet!rayssd!sud509!heiser@tdw201.ed.ray.com
From: heiser@tdw201.ed.ray.com
Newsgroups: comp.sys.ibm.pc.hardware
Subject: How to hook up turbo switch?
Keywords: turbo 386 clone ami c&t
Message-ID: <2050@sud509.ed.ray.com>
Date: 10 Aug 90 16:08:01 GMT
Sender: heiser@sud509.ed.ray.com (Bill Heiser - Unix Sys Admin @ Raytheon Company, Sudbury MA)
Lines: 40



Hi,

I have a question about configuring the machine I am building.

On the case I got, there is a "turbo" button with a two-wire cable
attahced, with a jumper on the end (with two holes).

On my motherboard, the "turbo" speed selection is made by setting a
jumper on a 3-pin jumper.  The instructions say that for low speed,
jumper pins 1/2, for high-speed, jumper pins 2/3.  

What's the proper way for me to deal with this so that if I have the
turbo pushbutton in the "out" position the system will be in slow speed,
and if I have it in the "in" position, the system will run at the 
high speed?

The m/b info ias as follows:

386/25, slow speed is 20.
Brand name is Soyo
8mb 70ns ram in 1meg drams
AMI bios dated 04/09/90
C&T Chipset

Any advice will be appreciated.

p.s.  There is also a "digital speedometer" on the case.  I have managed
to get that working so that when I toggle the speeds via the keyboard, it
correctly shows either 20 or 25, as appropriate.

-- 
Bill Heiser
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