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Author Topic: s-Video to the 1084s' 9 Pin Port?  (Read 2391 times)

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Offline XDelusionTopic starter

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s-Video to the 1084s' 9 Pin Port?
« on: February 28, 2011, 09:29:20 PM »
Is it possible to build such an adaptor? One that would go from the S-Video port of Amiga Manaic's RGB Adaptors to the 9-pin port on the back of a Commodore 1084s?

http://www.amigamaniac.com/RGB_to_PAL_NTSC_adapter.html
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Offline Matt_H

Re: s-Video to the 1084s' 9 Pin Port?
« Reply #1 on: February 28, 2011, 09:45:55 PM »
Did you notice the 2 RCA-style plugs for video next to the audio jacks? (Note that not all 1084s have them). S-Video literally is nothing more than those 2 signals combined into a single plug. So with a custom cable to split S-Video into its component signals, plug one prong into luma, and the other into chroma (I think that's what they're called) and voila! Instant S-Video.
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Offline XDelusionTopic starter

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Re: s-Video to the 1084s' 9 Pin Port?
« Reply #2 on: February 28, 2011, 09:54:49 PM »
No shit?

Sweet! I guess I'll have to cut one of my extra S-Video cables then. :)
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Offline Speelgoedmannetje

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Re: s-Video to the 1084s' 9 Pin Port?
« Reply #3 on: February 28, 2011, 10:07:02 PM »
Quote from: XDelusion;618514
No shit?

Sweet! I guess I'll have to cut one of my extra S-Video cables then. :)

It's true, you can connect composite and s-video to the luma/chroma connectors. Very simple indeed. The 9pin port only receives an RGB signal, equal to the RGB signal of a SCART adapter.
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Offline XDelusionTopic starter

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Re: s-Video to the 1084s' 9 Pin Port?
« Reply #4 on: March 03, 2011, 05:14:20 AM »
Worked like a charm! I have to live with flicker, but it is a nice tie me over till I can find a S-Video flat screen monitor that can handle what ever a PAL Amiga can throw at it.
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Offline Zac67

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Re: s-Video to the 1084s' 9 Pin Port?
« Reply #5 on: March 03, 2011, 07:26:04 AM »
AFAIK the S-Video input was intended for the C64 which already offered quality video (probably a little known fact).
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Offline Franko

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Re: s-Video to the 1084s' 9 Pin Port?
« Reply #6 on: March 03, 2011, 07:32:35 AM »
Quote from: Zac67;619201
AFAIK the S-Video input was intended for the C64 which already offered quality video (probably a little known fact).


The original C64 (breadbox style) only offered composite video the C64c (A600 style case) has S-Video... :)
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Offline Matt_H

Re: s-Video to the 1084s' 9 Pin Port?
« Reply #7 on: March 03, 2011, 12:38:38 PM »
Quote from: Franko;619204
The original C64 (breadbox style) only offered composite video the C64c (A600 style case) has S-Video... :)


Depends on the cable, I think. We had a breadbox C64, but it had a 3-pronged monitor cable: mono audio, luma, and chroma. It may have been an after-market add-on, though.
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Offline Franko

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Re: s-Video to the 1084s' 9 Pin Port?
« Reply #8 on: March 03, 2011, 01:11:00 PM »
Quote from: Matt_H;619250
Depends on the cable, I think. We had a breadbox C64, but it had a 3-pronged monitor cable: mono audio, luma, and chroma. It may have been an after-market add-on, though.


It seems to depend on when and where your old ( breadbox) C64 was made, some of the very early ones were supposed to have luminance of pin 1 but in actual fact didn't , seemed mostly from my own ones to be the ones manufactured in Germany, while the two I have manufactured in England do have Luminance of pin 1... :)

C64 5 PIN DIN Video Out
1. Luminance
2. Ground
3. Audio Out
4. Composite Out
5. Audio In

C64c 8 PIN DIN Video Out
1. Luminance
2. Ground
3. Audio Out
4. Composite Out
5. Audio In
6. Chroma
7. Not Connected
8. +5V out
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