23 July 2006, 05:27 | #1 |
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Put a scart in your CD32
Amiga cd32 is a greath consoll (or computer)
but!! are a big problem !!! no are a scart !!! use this metot to fit a scart into your cd 32 look in your cd32 a tp9 fingher board (are reac on the top of quarz end a clock) use this sequence for a good resoult. 1 gnd to pin 21(gnd) 2 csync to pin 16 (fast blanking) 47 ohm resistence need 3 red to pin 15 (red pin cromance) 47 ohm resistence need 4 green to pin 11 (green input) 47 ohm resistence need 5 blu to pin 07 (blu input) 7 vsync to pin 20 (composite video) for a sound take a point to audio port on this photo on scart use pin 02 for r channel,end pin 06 to l channel. Use a pannel scart to insert a cd32 (in the same position on my photo) fix a scart use a hot glue gun for a fit a scart use this metod: cut on the low site of pannel (use a sordering or whot do you wont) use a scart to print a line of scart to line cut dremel are necesari to ridifinite signal of cut now the scart is work !!! (in 60 or 50 hz) Last edited by Dexther; 24 July 2006 at 01:28. |
23 July 2006, 08:07 | #2 |
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RGB is much better than S-Video.
Thanks for the information. I guess the connections are the same as on the French CD32? |
23 July 2006, 09:12 | #3 |
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Admins please move this thread to Sub-Forums: prb.Hardware pics.
This is really nice hack, indeed! |
23 July 2006, 12:14 | #4 |
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moved
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23 July 2006, 14:08 | #5 |
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this are a hack of moterbord revision 3
frech are already a rgb port (not a scart) all revision are a tp9 Scart are a my hack for use cd32 wareve you wont |
23 July 2006, 14:56 | #6 |
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This schematics seem a bit odd. On an rgb-scart, it should be fed composite sync to pin 20, not to pin 14, which actually is ground. Vertical sync should not be supplied at all.
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23 July 2006, 17:38 | #7 |
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excuse me are a pin 16
if you use a pin 20 in your tv still hall wait !! |
23 July 2006, 22:00 | #8 |
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It must just be coincidence that it works. The fast blanking pins original purpose is to interleave/mix a rgb signal with the normal TV-image, like transparent text-tv.
Pin 20 on the scart is the pin for composite sync. To pin 16 and pin 8 you should though apply a voltage to tell the TV to interpret the input as RGB and not composite. Check this schema of a normal Amiga RGB scart cable. Here you can find the specification for the voltage levels. Last edited by patrik; 23 July 2006 at 22:06. |
23 July 2006, 22:02 | #9 |
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this is great info.
this subforum rox! |
24 July 2006, 00:59 | #10 |
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this are a tp9 pin on CD32
NOT AMIGA CABLE are a differents i'm tested on lg flatron(crt),a grundig,end a philips tv stil perfect resulution |
24 July 2006, 01:10 | #11 |
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I understand that you have sourced the signals from the TP9 test-point of the motherboard of the CD32, still it is the composite sync and not vertical sync that should be supplied to pin 20 on the scart.
I am not saying this to be rude or anything, it is just that disregarding what signal you connect to the scart on a TV, it want the composite sync-signal on pin 20. If connect composite video signal to the TV, the composite sync will be mixed with the image signal itself ans uses pin 20. If you connect a S-video signal to the TV, the composite sync will be mixed with the luminance signal and uses pin 20. If you connect a RGB signal to the TV, the composite sync is not mixed with anything and uses pin 20. As you say it works, but it should not. |
24 July 2006, 01:14 | #12 |
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ok
i'm realize a video on demostration on my work belive or not IS WORK |
24 July 2006, 01:29 | #13 |
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I believe you.
The only reason why I am saying anything is that as the sync is not connected according to the scart specs it will most likely not work in all occasions. The reason why I posted the schematics for the regular Amiga RGB-scart was to show what voltages pin 8 and pin 16 should be fed to make all TVs understand that it is a RGB source and not a composite video source connected on the scart connector. Also this to guarantee that it work with all TV sets. Last edited by patrik; 24 July 2006 at 08:47. |
24 July 2006, 13:40 | #14 |
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i now
the voltage of csynch are to are big i'm inverte a polariti for vsync (this are a voltage for a scart to activity) end csync are in 20 pin for resolve a problem to white screen [ Show youtube player ] |
16 December 2006, 14:58 | #15 |
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It works perfectly! Thanks.
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22 February 2007, 20:06 | #16 |
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I was make this schematics about connect a cd32 to a scart and i have some problems, i reach imagen without sync, using the patrick´s changes in scheme too but i still without good syncs.
I need some help about it, anyone have another scheme or ideas? thanks in advance. |
23 February 2007, 11:07 | #17 |
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http://www.technick.net/public/code/...cd32_expansion
All signals are available on the edge connector. |
23 February 2007, 23:04 | #18 |
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@cd32asetukset:
Ok, this is what the scart pins should be connected to on the image: 2 - (Audio right channel) 4 - (Audio Ground) 5 - Video Ground 6 - (Audio left channel) 7 - Blue 8 - +12V via 1kOhm resistor (makes the TV activate the used scart-input) 9 - Video Ground 11 - Green 13 - Video Ground 15 - Red 16 - +12V via 150Ohm resistor (makes the TV use the RGB signals) 17 - Video Ground 18 - Video Ground 20 - Composite Sync The audio pins are in paranthesis as you have to supply that by own means either from the audio connectors or the expansion-connector. Last edited by patrik; 23 February 2007 at 23:35. |
26 February 2007, 19:41 | #19 |
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Thanks for the answers, im still using connectors from test point 9 in cd32, now i have a good image colors but still without syncs.
Anyone of yours have a cd32 with this hack? I found this page about tp9 pins of cd32 http://www.hardwarebook.info/CD32_TP9 this one talk about xor-gate for syncs. Thanks to all for the help. |
26 February 2007, 20:32 | #20 |
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The xor gate is not needed when connecting it to a TV.
Which SCART pin did you connect to composite sync on the CD32 motherboard? |
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