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From: guy@ns.network.com (Guy D'Andrea)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: Disk drives
Message-ID: <1991Feb1.115720.4391@ns.network.com>
Date: 1 Feb 91 11:57:20 GMT
References: <2238@otc.otca.oz>
Sender: news@ns.network.com
Organization: Network Systems Corporation
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In article <2238@otc.otca.oz> elson@otc.UUCP (Elson Markwick) writes:
>Hi.  I currently have a rather tired old A500, with an almost new (Commodore)
>second drive.  The internal drive appears to be getting a little bit fussy
>about which protected disks it will boot, and I was just wondering if it is
>possible (via some small hardware hack) to make the machine boot from df1:
>instead of df0:.  I've heard that the Pheonix motherboard for the A1000 has
>this capability via a switch.  Any suggestions anyone?
>
>Thanks, Elson
>-- 
>Elson Markwick | The only good cat |ACSnet:  elson@otc.otca.oz.au
>OTC R & D Unit |is a stir-fried cat|UUCP: {uunet,mcvax}!otc.otca.oz.au!elson
>Ph: 02 287 3142|       ALF         |Internet: elson%otc.otca.oz.au@uunet.uu.net
>Fax:02 287 3299|                   |Snail:  GPO Box 7000, Sydney 2001, Australia
I have done this on a 2000 and it was "fairly" easy to do.  I don't know if your 500 has it's chips socketed or not but if not there is a PIA chip that does the"select" of df0:, df1, etc...  All I did was pull the chip out, lift the two legs, and then wrap some wire-wrap wire around each leg and insert the opposite end into there opposite holes they came from... Whew!  Make sense?  I'd be more specific but since I dont have 500 schematics I can't tell you the number of the chip to do it to.  I has worked f












or me for over 5 months now so no problem!  Good luck!!!