[Coco] Run of RGB2VGA boards

[Salvador Garcia]

The R Pi has built in support for RCA (composite) and HDMI so I would think (hope?) that this is a step in the right direction; however, given the response below, it might still prove challenging or downright impossible to use the R Pi as an RGB to VGA converter.


I hope someone can provide information on this.


Salvador




-----Original Message-----
From: Kandur <k at qdv.pw>
To: coco <coco at maltedmedia.com>
Sent: Sun, Aug 16, 2015 1:48 pm
Subject: Re: [Coco] Run of RGB2VGA boards


He was also asking about the Raspberry Pi, how about that?

> I would ask the
same question about a Raspberry Pi. This computer is a step up from the Arduino
and has more hardware resources, plus it is not much more expensive than the
Arduino.

Kandur

Sunday, August 16, 2015, 11:04:37 AM, you wrote:
> An arduino
cannot do it. It's a matter of speed and time and sync. Even if
> you overclock
it to 1Ghz you will deal with a extremely complex sync code,
> counting
instructions to perform it at the right time, because its just a cpu
> running
code. A fpga runs paced in the edge of its multiple clocks and perfect
> timing
fitting between each step and also most important: all in parallel.

> Sent from
my iPhone

>> On Aug 16, 2015, at 10:46 AM, Salvador Garcia
<ssalvadorgarcia at netscape.net> wrote:

>> Not an expert on the DE-0 or the
Arduino, but from what I do know of them I would assume that the Arduino can't
handle this task. Hopefully I'll be corrected. :-)


>> The DE-0, as such, and
as I understand is an open ended device. The "program"that is loaded onto it
configures is components so that it behaves a certain. For example, when it
loads Gary's program for the FPGA Coco the, the DE configures it self not only
as a 6809 microprocessor, but specifically as a Color Computer 3.


>> On the
other hand, the Arduino is a microcontroller based computer that just runs code.
Of course, given enough code, any processor based product could be used to
convert the RGB signals to VGA, but I suspect that the Arduino just does not
have the necessary hardware resources to accomplish this task.


>> I would ask
the same question about a Raspberry Pi. This computer is a step up from the
Arduino and has more hardware resources, plus it is not much more expensive than
the Arduino.


>> I hope someone else chimes in. If any of the above information
is wrong I would like to corrected for the benefit of all. Salvador




>>
-----Original Message-----
>> From: Barry Nelson
<barry.nelson at amobiledevice.com>
>> To: coco <coco at maltedmedia.com>
>> Sent:
Sat, Aug 15, 2015 11:06 pm
>> Subject: Re: [Coco] Run of RGB2VGA boards


>> I
have a question, rather than a DE-0 Nano, could an Arduino Due be used to
>>
perform the video processing if software was developed to run on it? It has a
32
>> bit processor running at 84 Mhz and is much less expensive than the DE-0
Nano.
>> In theory it looks to me as if it might work...


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