Re: COP421 dumps!

Fantastic news! I found another site mentioning one of these microcontrollers on the Widget disk. Perhaps Dr. Schäfer could use this setup to dump that controller as well?

-J

On Tue, Mar 29, 2016 at 4:17 AM, Tom Stepleton <stepleton_at_email.domain.hidden> wrote:

> I really must be on the wrong mailing lists!
>
> I assume you have to source a COP402 from eBay or somewhere...
>
> --Tom
>
> On Tue, Mar 29, 2016 at 1:21 AM, James MacPhail <gg__at_email.domain.hidden
> > wrote:
>
>>
>> The Lisa I/O COPS dump has been preserved here as well:
>>
>> http://segher.ircgeeks.net/COPS/
>>
>> Using that code dump, a successful plug-in replacement for the Lisa's
>> COPS has been built based on the romless COP402. I expect production units
>> will be available soon.
>>
>> This design does have its drawbacks... it isn't low power, so it won't
>> keep time for long when running from a battery (when power is disconnected
>> from the Lisa). However, since most of us don't have a battery on the Lisa
>> I/O board anymore anyway, this likely isn't an issue for most people.
>>
>> James
>>
>> As far as I know, the mask ROMs in the COP421s were basically the
>>> last bit of code in the Lisa's hardware that hadn't been preserved
>>> on modern media.
>>>
>>
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-- 
Jason Perkins
313 355 0085

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