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Re: Apple II ROM
- Subject: Re: Apple II ROM
- From: "PZ" <skierpaul@yahoo.com>
- Date: 1 Nov 2006 08:34:58 -0800
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Hi Patricia,
Contact Henry at Reactive Computers: 800-284-6782. He builds some ROM
socket hardware adapters for the Apple II, and he should be able to
source those ROMs for you.
- Paul
Patricia Shanahan wrote:
> Inspired by a History of Computing course I'm auditing, I dug my Apple
> II out and powered it up.
>
> It displays a screen with "Apple ][" at the top, otherwise blank. Reset
> puts it in the monitor, which works correctly. It fails to enter Basic
> or the mini-assembler.
>
> I've used the monitor to display ROM contents. The Monitor ROM, F800 and
> up, matches pieces of code in the Reference Manual. The remaining ROMs
> contain what looks like junk, and do not match Reference Manual listings.
>
> From the functioning monitor, and good readouts from monitor ROM, I
> conclude that the ROM address and data paths work. That makes me think
> that the junk data from the other ROMs is due to failure of the ROM
> chips themselves.
>
> Is there a source for replacement ROM chips?
>
> Although the computer has no practical use, it has very great
> sentimental value as my first personal computer.
>
> Thanks for any help,
>
> Patricia