Path: utzoo!attcan!uunet!cbmvax!jesup
From: jesup@cbmvax.UUCP (Randell Jesup)
Newsgroups: comp.sys.amiga.tech
Subject: Re: I lost my head !
Message-ID: <5509@cbmvax.UUCP>
Date: 15 Dec 88 00:44:31 GMT
References: <5381@leadsv.UUCP>
Reply-To: jesup@cbmvax.UUCP (Randell Jesup)
Organization: Commodore Technology, West Chester, PA
Lines: 16

In article <5381@leadsv.UUCP> kallaus@leadsv.UUCP (Jerry Kallaus) writes:
>I just added a C= A2090A and a Seagate ST4096 harddisk to my 2000.
>
>Does anyone have any idea why only 8 out of the 9 heads on this
>drive may be used?

	The current 2090 firmware (in the ROM for the Z80 onboard) only
supports the old St506 standard of 8 heads.  Many modern drives support using
one of the now unused lines (I think the reduced write current line) as an
additional head select line.  Dale Luck burned a custom version of the
ROM for himself that does this, I'd advise contacting him (amiga!gfxbase!dale,
I think).

-- 
You've heard of CATS? Well, I'm a member of DOGS: Developers Of Great Software.
Randell Jesup, Commodore Engineering {uunet|rutgers|allegra}!cbmvax!jesup