[Coco] How SLENB works ?

[Kandur]

Thank you for the tip.
It's on the way now...
http://www.ebay.com/itm/NEW-Raspberry-Pi-2-0-Model-B-512MB-Element-14-Linux-System-Board-Made-in-UK-/171364703368?pt=LH_DefaultDomain_0&hash=item27e621dc88 

Kandur

Sunday, July 20, 2014, 8:52:36 AM, you wrote:
> Well actually none of them can emulate a coco-3 and they don't have video
> output. Better go for a rasp Pi fo this task.


> What i'm doing is trying to emulate devices, like rom, drives, etc.

> I started ordering the arduino mega, but it's too slow maybe for those
> purposes and I will have to move to the arduino DUE. But keep in mind the
> DUE needs to be level shifted to 3.3v on ALL PINS!


> Luis Felipe Antoniosi




> On Sun, Jul 20, 2014 at 11:35 AM, Kandur <k at qdv.pw> wrote:

>> Ciao Luis!
>> What a great range of prices of the Arduino products!
>> From the Arduino UNO Rev3  €20.00 + VAT to the TinkerKit - Lab €949.90 +
>> VAT
>> Which one can emulate a Coco-3?
>> Are you talking about the Arduino Mega ADK Rev3 €44.00 + VAT?

>> Kandur

>> Friday, July 18, 2014, 8:32:21 AM, you wrote:
>> > Hi,

>> > I ordered an arduino mega. The Due has 3.3V inputs and I would need a
>> level
>> > shifter for every single pin as well op-amps for the analogs. So let's
>> > start using the mega than I can move to the faster one.



>> > Luis Felipe Antoniosi




>> > On Fri, Jul 18, 2014 at 11:19 AM, Matthew Stock <stock at bexkat.com>
>> wrote:

>> >> Luis,

>> >> SLENB as you say disables the internal chip selects for the bus.  This
>> >> allows a cartridge take over that function.  It means, for example, that
>> >> you could take over addresses that would normally be part of the
>> internal
>> >> ROM or peripherals.  I haven't used it myself, but I also broke it out
>> for
>> >> my Android projects.  Let me know if you want to compare notes.

>> >> I've been experimenting with the Arduino Due.  With the higher clock
>> >> speeds, I think it might be able to handle memory read timing from the
>> >> Coco.
>> >>   -Matt

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