Oric RGB output to Amstrad CPC464 color monitor input

If you want to ask questions about how the machine works, peculiar details, the differences between models, here it is !
How to program the oric hardware (VIA, FDC, ...) is also welcome.
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waskol
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Oric RGB output to Amstrad CPC464 color monitor input

Post by waskol »

Do you think it is possible ? Are the voltages compatibles ?

In fact, it is such a pain to build a RGB-->SCART cable when you are not electronician, this could be my solution since I saved a complete working cpc464 with its color monitor from the trashes in the street ;) !!!

Thank you for any piece of advice ;)
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Dbug
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Post by Dbug »

Looks like it's doable:
http://usuarios.lycos.es/putusoft/emucp ... tm#ctm2dvd

You can probably put the RGB pins of the oric cable to the corresponding amstrad monitor pins :)
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waskol
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Post by waskol »

thank you veeeeeryyyyy much DBug !
I will study that very closely :P
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carlsson
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Post by carlsson »

So, the CPC outputs "analogue" (1V) RGB. Does the Oric too? I know the BBC outputs TTL level (3-5V) RGB, and I believe the Spectrum does too. That is something to consider, the voltage level of your outputs. If it is too strong, you may need to add resistors to bring down the voltage to not damage the monitor.
Anders Carlsson
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waskol
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Post by waskol »

Thank you very much for this precision, I will test the output voltages in order to be sure that they are alike.
:P
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Twilighte
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Post by Twilighte »

I'd also be interested if this works since i have an amstrad monitor, i'd also be interested to hear if the power output of the monitor (intended for the CPC) is compatable with the Oric Power? :P
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waskol
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Post by waskol »

I just had a look to the Oric service manual, and guess what...

it seems to be 5V...
I think we will have to divide the voltage outputs with a few resistors....
:?
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carlsson
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Post by carlsson »

A link to give you a head start:
http://www.acornelectron.co.uk/eug/66/a-scar.html

The following pages take a more complex - but perhaps more accurate - approach in converting the signal:

http://www.sprow.co.uk/bbc/howto.htm#vgamonitor
http://www.howell1964.freeserve.co.uk/A ... ements.htm

Of course, you also have this article on Defence-Force:
http://www.defence-force.org/computing/ ... /index.htm
Anders Carlsson
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Steve M
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CPC monitor

Post by Steve M »

Twilighte wrote:I'd also be interested if this works since i have an amstrad monitor, i'd also be interested to hear if the power output of the monitor (intended for the CPC) is compatable with the Oric Power? :P
Of course it works. I've been using an Amstrad monitor for ages whcih came from Dave DIck.

There are at least two different monitors and they have different connections. The old dark green ones are the type I'm familiar with. You can chop off the DIN plug and fit a proper one that'll work with your Oric. (Actually I soldered the Oric wires into a replacement DIN so I can connect either.

I can send CPC connection details to anyone that needs it but you should be able to find the computer socket details on the net - and the DIN plug fits the socket so it's easy to figure out !

The CPC power is no good for Orics.
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waskol
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Post by waskol »

Thank you both of you :P

Now, I just need to build a good DIN cable to go between them :wink:
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