Path: utzoo!attcan!uunet!lll-winken!lll-tis!helios.ee.lbl.gov!pasteur!agate!ig!uwmcsd1!bbn!mit-eddie!uw-beaver!ssc-vax!uvicctr!tholm
From: tholm@uvicctr.UUCP (Terrence W. Holm)
Newsgroups: comp.os.minix
Subject: XT hd controller on an AT
Message-ID: <454@uvicctr.UUCP>
Date: 12 Jul 88 23:13:19 GMT
Reply-To: tholm@uvicctr.UUCP (Terrence W. Holm)
Organization: University of Victoria, Victoria B.C. Canada
Lines: 22

A while back Dr. Tanenbaum reposted the following:

> Many low-cost AT clones are sold with an 8-bit hard drive controller
> instead of a 16-bit hard drive controller.  This may affect proper
> configuration of Minix.  Which hard drive controller should be used in
> that case?  (Tom Limoncelli -- TLimonce@Drew.Bitnet)

We encounted this the first night we installed Minix (about a year
ago). Yes, there are clone AT's with XT controllers in them.
In this situation the "xt_wini" driver works fine. But, you must 
disable the "if (pc_at)" check in kernel/main.c, and force
the "set_vec(XT_WINI_VECTOR, wini_int, base_click)".

We did this with a flag on our kernel make file: "make wini=xt"
(or "make wini=at"). We will be pleased to help those people who
know that this is a problem with their hard drive configuration.

--------------------------------------------------------------------
               Edwin L. Froese
                  uw-beaver!ubc-cs!mprg!handel!froese

               Terrence W. Holm
                  uw-beaver!ubc-cs!uvicctr!sirius!tholm