[Coco] XPander-Coco lives!

[Zippster]

Thank you Jim.

- Ed


> On May 1, 2016, at 7:34 PM, RETRO Innovations <go4retro at go4retro.com> wrote:
> 
> On 5/1/2016 7:30 PM, Zippster wrote:
>> 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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>> 
> I put the following in my cart to buy:
> 
> http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail&itemSeq=196005954&uq=635977197923854587
> 
> MIC803, which seems much cheaper than the MAX811 ($.22 versus $2.10 @100s)
> 
> I chose a 4.38 device, but it appears MIC offers a ton of threshold voltages.
> 
> Jim
> 
> 
> -- 
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> store.go4retro.com
> 
> 
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