Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!att!lzaz!hcj
From: hcj@lzaz.ATT.COM (HC Johnson)
Newsgroups: comp.sys.atari.st
Subject: Re: BMS upgrade chip for 204 HD ?
Summary: you done HAVE to have a new chip, just a new driver.
Message-ID: <644@lzaz.ATT.COM>
Date: 21 Jun 89 15:44:06 GMT
References: <1240@tnoibbc.UUCP>
Organization: AT&T ISL Lincroft NJ USA
Lines: 29

In article <1240@tnoibbc.UUCP>, remco@tnoibbc.UUCP (Remco Bruyne) writes:
> I would like to connect a second HD drive to my Atari host adapter.
> There seems to be an upgrade chip from Berkeley Micro Systems to
> make this possible.
> 
> Questions:
>     1) Which chip from the adaptor board is this ?
>     2) Where do I get this chip (i.e. what is the address of BMS) ?
>     3) What is the price ?
>     4) Are there other interesting things with reference to this chip ?
> 
1) only one chip (a PLA) is pluggable.  Thats the one.
2)

Vance Chin                 Berkeley Microsystems
                           P.O. Box 20119
                           Oakland, CA  94620                           
1-415-547-2191
3) about $20, USA.
4) Without the chip, you have to patch the driver to limit it to 2 drives,
   as it will think all 8 are there.
   With the chip, the SH204 will work (well) , like the BMS and SUPRA.
   --As your drives starts to fail, the chip will pass error reports back
 	to TOS, and warn you somewhat of impending doom.

Howard C. Johnson
ATT Bell Labs
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