PSNee further development

General information to do with the PlayStation 1 Hardware. Including modchips, pinouts, rare or obscure development equipment, etc.
rama3
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Re: PSNee further development

Post by rama3 » January 14th, 2020, 3:18 am

Dark-Show:
No, I doubt this particular problem is a carry over.
The code simply has to open-drain the data pin to fix the problem. This is obvious to a modchip developer, so I think it was just an oversight.

From what I remember, the laser fix is required because the Mechacon in these PS2s tends to crash.
It's not known what causes it to crash, but we know that later versions are stable again.

bugmenot:
This isn't a modchip problem. Your TV simply doesn't work with PAL timings.
A PAL game will set the console's output to 50Hz, which many NTSC region TV don't recognize.

bugmenot
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Re: PSNee further development

Post by bugmenot » January 18th, 2020, 6:43 am

rama3 wrote:
January 14th, 2020, 3:18 am
bugmenot:
This isn't a modchip problem. Your TV simply doesn't work with PAL timings.
A PAL game will set the console's output to 50Hz, which many NTSC region TV don't recognize.
i'm playing on a PAL PSone and a PAL tv (not CRT). I also changed the scart svideo cable to a scart RGB cable. The picture is so much sharper. But the vertical offset remains there...

PS: the forum still uses http instead of https on an IIS 8 instead of IIS 10 (windows 2012). Just pointing this out as an IT guy ;-)

chriz2600
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Re: PSNee further development

Post by chriz2600 » February 12th, 2020, 8:47 pm

rama3 wrote:
December 28th, 2019, 12:36 am
As said in pm, the original license is a free for all. Feel free to use it and good luck! :)
Just wanted to share the ESP32 port of PsNee as used on PS1HDMI.

https://github.com/chriz2600/PsNee-ESP32

The repository contains a demo project based on esp-idf v3.3.1.

Thanks again!

rama3
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Re: PSNee further development

Post by rama3 » February 14th, 2020, 4:20 am

Awesome, thanks for sharing back! :)

I'd just like to mention that, since you have the ESP32, you should be far less pin constrained.
With more available inputs, you can use some other signals to simplify things.
There is a signal called XSLOW or similar, for example, which is just the drive speed (either x1 or x2).
Using that, you may be able to remove all the hysteresis stuff, as unlock symbols must only appear at x1 speed ;)

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