[comp.sys.atari.st.tech] Adding another HD

ekrimen@csuchico.edu (Ed Krimen) (09/02/90)

I may have an opportunity to get a used 20meg hard drive cheaply.  
I'd like to add it to my current system consisting of an ICD case with
host adapter and an ST157N-1.  I'm pretty sure that the drive I'm
getting will be MFM or RLL.  I don't have an OMTI or Adaptec 
controller (which cost around $100, right?), so would it be possible 
to connect it to the SCSI controller already on the 157N?  Can't the 
embedded controllers control two drives?  I know I'd have to change 
some DIP swtiches or something so the host adapter can recognize the 
second drive.  Is there anything I'd need?  Thanks for the help.

woju@mist.UUCP (Wolfgang Jung) (09/03/90)

In <1990Sep01.174836.8094@ecst.csuchico.edu>, ekrimen@csuchico.edu (Ed Krimen) writes:
|I may have an opportunity to get a used 20meg hard drive cheaply.  
|I'd like to add it to my current system consisting of an ICD case with
|host adapter and an ST157N-1.  I'm pretty sure that the drive I'm
|getting will be MFM or RLL.  I don't have an OMTI or Adaptec 
|controller (which cost around $100, right?), so would it be possible 
|to connect it to the SCSI controller already on the 157N?  Can't the 
|embedded controllers control two drives?  I know I'd have to change 
|some DIP swtiches or something so the host adapter can recognize the 
|second drive.  Is there anything I'd need?  Thanks for the help.

If that 'cheap' Drive is an SCSI Drive, just connect it to the SCSI Bus
at your ICD Hostadapter, but if that Drive is a MFM/RLL Drive, you should
get an OMTI or Adaptec 40X0 or the Controlerpart from a SH205/204 or the
Megafile 30/60, but you can't connect a MFM(ST506 Bus) to the SCSI Bus, 
you will probably damage your Drive and Hostadapter if you do it, so be
careful............


by
	Wolfgang

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