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echo: apple
to: comp.sys.apple2
from: Michael J. Mahon
date: 2009-02-02 17:54:52
subject: Re: A new boot code for Alex Freed`s Pseudodisk ][...

Alex Freed wrote:
> Deckard wrote:
>> On Feb 1, 12:33 am, Alex Freed  wrote:
>>> It doesn't have much space for extra code
>>
>> Enough for me ;-)
> 
> Great job but I was talking about the DOS3.3 page - identical to the ROM 
> on the real floppy controller cards.
> 
>>
>> I've optimized the code and added a test to check if the open apple is
>> pressed and if so change the origin.
>> And the free bytes are always = 11.
>>
>> My proposal:
>>
http://boutillon.free.fr/Underground/Outils/Beautiful_Boot_PD8/Txt/ALT_BOOT_MMC.txt

>>
>>
>> I can't test it. Do you think it could work?
> 
> I think it should, but one issue is that a different page of the ROM is 
> mapped in nibble mode. There should be a provision added to switch the 
> address line so as to map in the "ProDOS" page that you have
optimized.
> In my design hitting reset on the Apple doesn't reset the AVR.

Does that take a wire or a diode to change?  ;-)

-michael

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