Conference hydra::amiga_v1

5087.0. "AmigaDOS 2.0 requires new roms for A2620 and A2630 boards" by AMIGA::RIES (OS/2 = Half an Operating System) Tue Oct 01 1991 14:59

Over the past few months I have read various pieces of information that seem
to imply that in order to run AmigaDOS 2.0 on the A2620 and A2630 accelerator
boards you must have the latest revision of the roms.

I talked to Roy at The Memory Location about this, but as usual, he knew
nothing about it, and was not very helpful in finding out for sure. Are
all Amiga dealers like this?

Anyway, I read some usenet notes on this topic yesterday, and it seems to
confirm that you do indeed need new roms. Seems that the older roms do not
handle the fact that the 2.0 roms are 512K rather than 256k properly.

Any A2620 or A2630 owners out there aware of this?

Here are a couple of the notes on this topic direct from Dave Haynie:

-----------------------------------------------------------------------------

Article: 14109
From: [email protected] (Dave Haynie)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: A2620 and KS 2.04
Date: 23 Sep 91 16:37:57 GMT
Organization: Commodore, West Chester, PA
 
In article <[email protected]> [email protected] (Stephane Guillard) writes:
>In article <[email protected]> [email protected] (John Harold Snow) writes:
>>You will need new roms for the 2620 or 2630 board.  There is a conflict
>>in addressing between the 2.0 roms, which now need 512k, and the older
>>ROMs on the boards.
 
> It all depends on the fact that CBM will (or won't) release the file
> version of KS2.04, which is to be ran at $200000 ; if they do, you only
> need to kickit into your 2620's RAM, and no conflict at all, I run this
> all day. 
 
Actually, what you really want here is KS2.04 assembled for either $00f00000 or
$00f80000, which you can load with SetCPU.  The disadvantage of the hack for
KickStart at $00200000 is that your KickStart code is no longer write 
protected, which makes the system easier to kill.
 
> If they only sell a ROM-based version, we're gonna have to change at least 
> a PAL (not roms, changing roms won't change their decoding address), to 
> change the decoding address of the 2620's roms.
 
Nope.  The A26x0 ROMs can be switched on and off under control of the ROM code,
though by the time you're in AmigaOS the control registers are no longer 
available.  The A26x0 ROMs were supposed to be off by the time you got to
AmigaOS, but due to an undetected bug in the A26x0 ROM code, they were left on
in ROM older releases (I think "Revision 6" is the 2.0-compatible A26x0 ROM
release, though I'm not certain).
 
-- 
Dave Haynie Commodore-Amiga (Amiga 3000) "The Crew That Never Rests"
   {uunet|pyramid|rutgers}!cbmvax!daveh      PLINK: hazy     BIX: hazy
		"Why are you trying to second guess me?" -R.E.M.

------------------------------------------------------------------------------

Article: 14191
From: [email protected] (Dave Haynie)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: A2620 and KS 2.04
Date: 25 Sep 91 15:55:53 GMT
Organization: Commodore, West Chester, PA
 
In article <[email protected]> [email protected] writes:
>Dave Haynie (or anyone who can help),
 
>Perhaps someone in the know can help us to identify weather or not we
>have 2.04 compatible ROMS.
 
>This is how my A2630 is labeled...
 
>U102:   390282-04    9EB2
>U103:   390283-04    4B70
 
From what the software folks tell me, you need the "-06" version of those
ROMs.  They have apparently been put in later model A2630s, I guess those
made since there was an approved "-06" ROM set, and that means they should
be available as a replacement part, if nothing else.  Note that this is only
an issue with 2.04 ROMs; if you're loading 2.04 from floppy with SetCPU, you
don't care about it.
 
 
-- 
Dave Haynie Commodore-Amiga (Amiga 3000) "The Crew That Never Rests"
   {uunet|pyramid|rutgers}!cbmvax!daveh      PLINK: hazy     BIX: hazy
		"Why are you trying to second guess me?" -R.E.M.

Indeed, the Commodore accelerators need ROM revision -06 for running
V2.? in ROM. If it is kickbooted this is not needed at all. The parts
are supposed to be available as maintenance parts. There are 2 ROMs
in the set.

	-SES

    Hel(p!/lo),
    How can i see what revision my 2630-ROMS are without (un)screwing my
    Ami?
    Can anyone explain how the build in monitor works, 'cause i can start
    it, but is it a powerfull tool?
    
    Ave, Frank
    
    P.S. have you looked at note 5066!