PlayStation PAL Series Colour/Color Modification (PAL60)

General information to do with the PlayStation 1 Hardware. Including modchips, pinouts, rare or obscure development equipment, etc.
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Mdv
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Re: PlayStation PAL Series Colour/Color Modification (PAL60)

Post by Mdv » November 3rd, 2020, 2:13 am

a7mag3ddon wrote: September 4th, 2020, 1:25 am Thats what i dont get, my TV definitly supports RGB my Saturn RGB cable works, my Amstrad 6128 RGB cable works and my Megadrive RGB cable works.

It has a very old non stealth modchip installed, would that matter?

Is there any signals i can check? I know the voltage to pin 16 is there i checked that.

it's likley a faulty scart lead, are all pins present and not bent or missing?

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Re: PlayStation PAL Series Colour/Color Modification (PAL60)

Post by damiank94 » September 9th, 2021, 9:53 pm

TriMesh wrote: September 3rd, 2020, 4:34 pm The later model PAL machines (SCPH-7002, SCPH-7502 and SCPH-9002) will produce NTSC-4.43 when running NTSC software. This was the output format typically used by multi-standard VCRs when playing back NTSC tapes, so a lot of Euro spec TVs can handle it.
Is there a problem with game speed like it is in older consoles? PAL PSone also outputs NTSC4.43?

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Re: PlayStation PAL Series Colour/Color Modification (PAL60)

Post by TriMesh » September 19th, 2021, 6:00 pm

damiank94 wrote: September 9th, 2021, 9:53 pm
TriMesh wrote: September 3rd, 2020, 4:34 pm The later model PAL machines (SCPH-7002, SCPH-7502 and SCPH-9002) will produce NTSC-4.43 when running NTSC software. This was the output format typically used by multi-standard VCRs when playing back NTSC tapes, so a lot of Euro spec TVs can handle it.
Is there a problem with game speed like it is in older consoles? PAL PSone also outputs NTSC4.43?
Yes, exactly the same situation - the GPU clock is fixed by the hardware to the PAL clock so when switched to 60Hz it's not quite at the right frequency. The PSone video hardware can be generally considered to be identical to the SCPH-700x and later regular PSX video hardware.

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Re: PlayStation PAL Series Colour/Color Modification (PAL60)

Post by bailey1607 » October 14th, 2021, 3:12 pm

Hi,
I'm installing dual oscillators in my PU-8 and I'm taking the parts from a PU-18 board. The guide I'm following says remove a capacitor and install it on the back of the board but the PU-18 has 2 capacitors, I believe a 1nF and a 100nF. So does anyone know which one, both or are neither of them correct for the PU-8 board?

EDIT: Nevermind. I installed both capacitors and it works great! I'll leave this here in case someone else has the same situation.

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Re: PlayStation PAL Series Colour/Color Modification (PAL60)

Post by setiawan » Today, 3:05 am

Just bought a CRT that my PAL PS1 (SCPH-7002) isn't playing nice with, and I'm wondering if this mod would fix the issue.

The PS1 has been modded so that it can run NTSC games. When it does play NTSC games, my understanding is that it is outputting PAL60 (i.e. PAL color encoding at 60hz). With most other CRT's that I've tried, it detects the signal as PAL and displays colors correctly.

With the new CRT I just bought, whenever the PS1 is playing NTSC games, the CRT detects it as NTSC. The CRT lets me switch between 3.58 and 4.43. When on 3.58, the picture is grayscale, and with 4.43, the colors are.. wrong. Green is missing entirely, and the other colors are a bit off. It seems like this new CRT is just assuming that a signal at 60hz must be NTSC and tries to decode the color accordingly, whereas my PS1 is actually still sending PAL.

So in short, am I understanding correctly that this mod would force my PAL PS1 to send a signal with NTSC color encoding, and subsequently my monitor would display the colors correctly? Is this exactly the kind of problem that this mod aims to fix?

Thanks all!

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Re: PlayStation PAL Series Colour/Color Modification (PAL60)

Post by setiawan » Today, 4:36 pm

Okay so I just tried this mod, and.. no discernible difference. Did I do something wrong, or am I just misunderstanding what this mod does?

Mod:
20211017_154624 copy.jpg
240p test suite set to PAL:
20211017_162304 copy.jpg
240p test suite set to NTSC, monitor set to NTSC 4.43:
20211017_162328 copy.jpg
240p test suite set to NTSC, monitor set to NTSC3.58:
20211017_162336 copy.jpg
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