Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!elroy.jpl.nasa.gov!mahendo!wlbr!pete
From: pete@wlbr.imsd.contel.com (Pete Lyall)
Newsgroups: comp.sys.m6809
Subject: Re: Coco Drive Select 4
Message-ID: <1991Feb9.003916.19798@wlbr.imsd.contel.com>
Date: 9 Feb 91 00:39:16 GMT
References: <1991Feb8.101626.23735@ccu.umanitoba.ca>
Reply-To: pete@wlbr.imsd.contel.com.UUCP (Pete Lyall)
Organization: Contel FSD, Westlake Village, CA
Lines: 22

If memory serves, the coco disk select is like this:

You may use a maximum of 3 drives IF any are double sided

You may use a maximum of 4 drives IF they are ALL single sided

The 34 pin bus cable lines associated with drive select are:

  Pin 10 - Drive 0 (DS1)
  Pin 12 - Drive 1 (DS2)
  Pin 14 - Drive 2 (DS3)
  Pin 32 - Side Select (SS) -or- Drive 4 for RS drives

This is from memory from several hundred years ago (g) ....


Pete

-- 
Pete Lyall                                                   Contel Corporation
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