Re: Atari 130XE System/Basic ROMs?

From	ricortes <ricortes@earthlink.net>
Newsgroups	comp.sys.atari.8bit
Subject	Re: Atari 130XE System/Basic ROMs?
Date	2011-07-01 08:07 -0700
Organization	http://groups.google.com
Message-ID	<81faf4ef-e26b-45d0-8eea-a7502feea8ae@k23g2000pri.googlegroups.com> (permalink)
References	<e2ffee35-d5cf-4dca-b9bc-6892665bf95a@q15g2000yqk.googlegroups.com> <iuh592$ghp$1@dont-email.me>

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On Jun 29, 11:32 pm, "Brian Gaff" <Bria...@blueyonder.co.uk> wrote:
> Why on earth would anyone rip out rom chips?
>
>  How strange.
>
> Brian
>
> --
> Brian Gaff - bria...@blueyonder.co.uk
> Note:- In order to reduce spam, any email without 'Brian Gaff'
> in the display name may be lost.
> Blind user, so no pictures please!"Xaar" <r...@free.pages.at> wrote in message
>
> news:e2ffee35-d5cf-4dca-b9bc-6892665bf95a@q15g2000yqk.googlegroups.com...
>
> > Hello!
>
> > I got an Atari 130XE, but it has no ROMs (System and Basic) in its
> > sockets..
>
> > Does someone know, which types of (E)PROMs these ROMs are? Is it
> > possible to get an Image of these two ROM ICs?
>
> > I hope, someone can help me.
>
> > Best Regards, Xaar.

The OS ROM is a standard pin out 27128 type. It is likely the BASIC
ROM is an Atari mask type ROM, 24 pins vs. 28 like you would see on a
2764.

These are just a guesses: PO probably had a modified OS and maybe
expanded RAM. The modified OS could have been anything from something
compatible with older software to one with built in high speed disk
routines. Ram expansions sometimes use the 6520 PIA CS pin to the
BASIC ROM for banking RAM. Heck, I used to replace the ROM with ASM/ED
ROM so who knows?

B&C Computer Visions at www.Myatari.com has the BASIC chip for $12.
Some people would prefer to leave the built in BASIC out of the
computer and just use a BASIC cartridge. That way if you did decide to
expand the memory you have the PIA pin available.

Just for the record, I think everyone has switched to flash ROMs. I
seem to be the last man standing using UV erasable EPROMs. You
probably should go that route with respect to a replacement OS. There
are images of OS as well as BASIC for that matter if you want to burn
your own.

Rick

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Thread

Atari 130XE System/Basic ROMs? Xaar <redo@free.pages.at> - 2011-06-29 09:38 -0700
  Re: Atari 130XE System/Basic ROMs? "Brian Gaff" <Briang1@blueyonder.co.uk> - 2011-06-30 07:32 +0100
    Re: Atari 130XE System/Basic ROMs? Trevor <trevorREMOVE@holyoak.com> - 2011-06-30 15:35 -0600
    Re: Atari 130XE System/Basic ROMs? Xaar <redo@free.pages.at> - 2011-07-01 01:03 -0700
      Re: Atari 130XE System/Basic ROMs? Slor <semaj@rols.ten> - 2011-07-08 14:45 +0000
        Re: Atari 130XE System/Basic ROMs? ricortes <ricortes@earthlink.net> - 2011-07-09 07:01 -0700
          Re: Atari 130XE System/Basic ROMs? Slor <semaj@rols.ten> - 2011-07-11 20:11 +0000
            Re: Atari 130XE System/Basic ROMs? ricortes <ricortes@earthlink.net> - 2011-07-12 08:42 -0700
    Re: Atari 130XE System/Basic ROMs? ricortes <ricortes@earthlink.net> - 2011-07-01 08:07 -0700
      Re: Atari 130XE System/Basic ROMs? Trevor <trevorREMOVE@holyoak.com> - 2011-07-01 09:23 -0600

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