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From: bryce@hoser.berkeley.edu (Bryce Nesbitt)
Newsgroups: comp.sys.amiga
Subject: Re: Info on planned ROM upgrades-A2000?
Message-ID: <21961@ucbvax.BERKELEY.EDU>
Date: Thu, 26-Nov-87 04:04:51 EST
Article-I.D.: ucbvax.21961
Posted: Thu Nov 26 04:04:51 1987
Date-Received: Sun, 29-Nov-87 15:49:30 EST
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Organization: University of California at Berkeley
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In article <> mp1u+@andrew.cmu.edu (Michael Portuesi) writes:

>	* Is there any way to provide 512K Kickstart ROM space on the A1000?

Yes.  Provided you are talking a ROM kit, it would not be much harder
to make it 512K of ROM vs. 256K of ROM.  (To do a Kickstart in ROM
upgrade already requires a little hardware hacking, doing 512K is not
any more involved).

If you want to boot a 512K Kickstart disk the hack gets much more
involved.


On a separate subject, the internal piggyback-the-chip-ram hack would
be very interesting to do as a piggyback-the-WCS hack.  The chip hack
ends up as half-fast memory.  WCS is true-fast.

Random technical info:

Normally the WCS is at $FC0000.  With KS in ROM the normal
setup is ROM at $FC0000 and the 256K of ram at $F80000.  Some
people have set this up so V1.2 is in ROM, and V1.1 Kickstart
is loaded into the memory.  A switch swaps Kickstarts.


>	* If Commodore provides a future upgrade to Kickstart in ROM, will it
>work directly with either/both of these kits or will I have to go to the
>manufacturer for an update?

Commodore will probably release the ROMs in two forms:

A Kickstart disk
A 128K * 16 bit ROM, as used in the A500/A2000.

This means that you will need to have somebody reprogram the EPROMS in
your upgrade kit.  This will probably be supported by the manufacturer
of your kit.  Alternately you could purchase the new Kickstart disk
and have your local hardware hacker do the ROM job.

(You purchase the disk so you legally own a copy of the new Kickstart)

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