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From: jenglish@tardis.Tymnet.COM (Jim English)
Newsgroups: comp.sys.amiga.hardware
Subject: Using ST506 drives w/2090A
Message-ID: <967@tardis.Tymnet.COM>
Date: 22 Mar 90 03:04:46 GMT
Reply-To: jenglish@tymix.UUCP (Jim English)
Distribution: na
Organization: BT Tymnet, San Jose, CA
Lines: 24

I ran across a little problem I thought I would throw at you and
see what you think. It concerns the ST506 side of the 2090A.
I have a Kronos controller hooked up to an ST157N, and I boot
off it, and use it as my primary drive. Okay fine.
I then added a 2090A in an empty slot, and hooked the Rodime
3055 to it, and a old 10 meg ST412 drive in an external box.
The system boots up fine, and I can see and use all the drives
with no problem. BTW the 2090A thinks it is a second  controller, and
assigned the drives an address of DI0: and DI1: respectively.
That's okay with me.
Now, if I do not power on the external 10 meg drive and try to boot,
the system hangs apparently waiting for the drive to come ready.
If the system is booted, and I power off the external 10 meg drive, the
internal Rodime shuts itself down. 
I do not mount these devices from s/startup-sequence or s/startupii.
I removed the auto-boot ROMs from the 2090A.

I would like to be able to boot without powering on the external
drive, as it is really just work space. 

Any ideas are appreciated.
-- 
Jim English    MD-IPC   | JENGLISH@D37.TYMNET.COM or jenglish@tardis.tymnet.com
(214)637-7406  Dallas   | UUCP: ...!{ames,pyramid}!oliveb!tymix!tardis!jenglish