Article View: comp.sys.amiga.tech
Article #953Re: OVL line in Amiga 2000
From: George Robbins
Date: Sat, 19 Aug 1989 08:15
Date: Sat, 19 Aug 1989 08:15
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1529 bytes
In article <8908181206.AA07159@jade.berkeley.edu> U211344@HNYKUN11.BITNET (Olaf 'Rhialto' Seibert) writes:
> I bought a new Amiha 2000 this week, and looking through the schematics
> in the back of the (German) user's manual, I noticed the familiar
> (from my A1000) memory overlay line (OVL). It went from a CIA (as
> is to be expected) to GARY.
>
> This makes me wonder. The 2000 doesn't need a boot rom, does it? The
> start of the kickstart ROM has the same structure as the boot rom
> in the 1000. (I know; I disassembled it). Does the OVL line maybe
> map a PART of the kickstart rom to location zero? Or is there a
> boot rom anyway?
OVL says "Map some ROM to location 00xxxx, so that the power-up/reset
can find it's way to the normal ROM location. The A500/A2000 don't
need "boot ROM's", but you do need to get started somehow...
--
George Robbins - now working for, uucp: {uunet|pyramid|rutgers}!cbmvax!grr
but no way officially representing arpa: cbmvax!grr@uunet.uu.net
Commodore, Engineering Department fone: 215-431-9255 (only by moonlite)
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arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.csd.uwm.edu!cs.utexas.edu!sun-barr!oliveb!amiga!cbmvax!grrReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.csd.uwm.edu!cs.utexas.edu!sun-barr!oliveb!amiga!cbmvax!grr From: grr@cbmvax.UUCP (George Robbins) Newsgroups: comp.sys.amiga.tech Subject: Re: OVL line in Amiga 2000 Message-ID: <7708@cbmvax.UUCP> Date: 19 Aug 89 08:15:34 GMT References: <8908181206.AA07159@jade.berkeley.edu> Reply-To: grr@cbmvax.UUCP (George Robbins) Organization: Commodore Technology, West Chester, PA Lines: 20