[Coco] XPander-Coco lives!

Zippster zippster278 at gmail.com
Sun May 1 20:30:58 EDT 2016


I’ll look into an open drain part, the MAX811 was just what I had on hand patching up the boards.

- Ed

> On May 1, 2016, at 7:25 PM, RETRO Innovations <go4retro at go4retro.com> wrote:
> 
> On 5/1/2016 6:13 PM, Zippster wrote:
>> That’s a good point I didn’t give much thought to.  I know the reset switch works ok,
>> but that doesn’t mean something else would.
>> 
>> Since we’re working with a CPLD in the mix on these boards, I guess the reset
>> signal to the cart ports could be routed through it, and used to toggle !MR on the MAX811.
> I'd instead recommend an open drain supervisor, which are plentiful.  They work the same as the MAX811, but the RESET output is open drain.
> 
> 
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