Re: C64/VIC Bus state during RESET

From: Spiro Trikaliotis (ml-cbmhackers_at_trikaliotis.net)
Date: 2008-11-07 18:52:47

Hello Jim, Ruud,

* On Fri, Nov 07, 2008 at 11:05:24AM -0600 Jim Brain wrote:
> ruud.baltissen@apg.nl wrote:

>>> On powerup, an onboard uC will ....
>>>     
>>
>> If you allow me to add an idea: why not monitoring the RESET line?
>> Otherwise I have to power-cycle the C= every time I want to change the
>> image. A reset is more friendly for the electronics.
>>   
> I'm not sure how that is different from:
>
> "On powerup, an onboard uC will isolate the RAM from the bus, holding 
[...]

What Ruud most probably meant:

"On *reset*, an onboard uC will isolate..."

That is: Ruud does the whole process to start even on a RESET, not only
on power-up.

If this whole process only takes place on power-up, you have to go
through the power cycle each time you want to get a new ROM content.
With Ruud's proposal, you only have to reset the machine, which might be
less stress for the ageing machine.

Regards,
Spiro.

-- 
Spiro R. Trikaliotis                              http://opencbm.sf.net/
http://www.trikaliotis.net/                     http://www.viceteam.org/

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