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From: scale@abode.ttank.com (Luis Outumuro)
Newsgroups: comp.sys.atari.st.tech
Subject: Re: ICD micro ST and SH205
Message-ID: <1991Jun10.021825.1034@abode.ttank.com>
Date: 10 Jun 91 02:18:25 GMT
References: <10170@star.cs.vu.nl>
Organization: Abode Computer Services
Lines: 30

In article <10170@star.cs.vu.nl> oostrom@cs.vu.nl (Vincent van Oostrom) writes:
>I have a Mega ST4 (Tos 1.4 UK) with an internal ICD micro ST host
>adapter and (brand new, empty) 80 meg seagate (1096N??) drive set to SCSI 
>device #0. Now I want to add an SH205 (with data on it in a Mega box) 
>to this configuration. The device drivers I have are the one from ICD 
>and some archaic version of atari's device driver.
>Is it possible to use these harddisks at the same time?
>What software is needed?
>
>(I would prefer a solution in which I don't have to open my
>computer to alter the ID of the internal drive.)
>
>Vincent van Oostrom

	Hi Vincent,
		What you want to do is possible, but I doubt that you will like
the answer.  The ICD Micro adapter (both the AdSCSI Micro and the Advantage@<
Micro) actually change the DMA mode when they are installed; non-ICD host
adapters are not compatible with this new mode for the ICD Micro adapters.  Now
the ICD Advantage and AdSCSI have what is called a "dual-mode DMA"; it supports
and converts between the standard DMA mode common between most Atari and Atari
3rd-party host adapters, and the mode supported by ICD's Micro adapters.  Have
I lost you yet?! =^)
	It really is not as complicated as I make it sound.  You will just have
to put an ICD AdSCSI between the external DMA port (on your Mega), and your
SH205.  The ID number on your internal drive (inside your Mega) can stil  
remain the same, you can still use ICD's software.  Good luck and take care,
bye....................

						Luis