I've opened a thread for the default video mode stuff here:
http://www.psxdev.net/forum/viewtopic.php?f=41&t=3464

Please feel free to share your opinions! ;p

One idea to try is to put the GPU into both (PAL, NTSC) modes, and measure the VBlank interval using a CPU timer. This should work, since the important difference between the 2 main system types is the GPU oscillator frequency. That oscillator is slightly faster on NTSC regions, slightly slower on P...

I'm proposing to develop a change in how homebrew software detects and adjusts to the different PSX models. Standard practice has been to look at a char in the kernel that marks a console as being NTSC-J (char: I), NTSC-U (char: A), or PAL (char: E). The practice is then to initiate the GPU with 60H...

It may be a little off topic, but I wonder if it isn't possible to use some other video mode detection hint than the "E/A/I" char of the BIOS. One reason for this is that BIOS swaps are becoming more popular. Especially NTSC-J consoles really benefit from a PAL BIOS. I don't know of other ...

Nice, I knew it

The wait time is so-so overall, but then again, very little software would be 1.5 megs, right?

Oh by the way, the latest blog post link is slightly wrong, linking to https://github.com/danhans42/sioloader << "er" is bad :p

I'm trying to find the "_sio_control" implementation in the psyq sdk, but so far no luck. It's kind of important ;p Edit: Uh oh, is the implementation using kernel routines? It's well documented how problematic the kernel is.. If that's indeed the case, the SIO stuff should be rewritten. A...

True, that was with the handshaking. Okay, so using an ESP8266 is actually a good recommendation. These dev boards are quite small, come with USB bridges, offer WiFi, and are cheap. I'd much rather use one of these, than pay FTDI and support their malware practices ;p Regarding software, it's probab...

It's not so much about genuine parts vs clones*, but the details of operation.
I think the PSX had an inversion step, right? It kind of feels like this is important with the speed limitations you see.

* At these low speeds. It would matter at several MHz.

Sure, and thanks

The slower clock not working is probably a clock divider issue somewhere in the UART chain.
Not all hardware works well at all possible / standard baud rates.
345600 is 115200*3, 115200 being a very common value, so that should work

I'm also interested in a populated board! :) It'd be best with a 512kB chip, but 256kB is workable as well. The No$Cash BIOS is pretty well compatible, but only if the Memory Card fast access option is turned fully off*. I would want to use this 256k BIOS in my main machine, just because of the nove...

The card is legit, you can see the typical Sony parts inside (and they're expensive, so cloners didn't use them). I imagine there is some corruption in one of the saves, possibly that Abe's Odyssey one and possibly with the block link feature. The Sony kernel libraries should prevent any memory card...

That sounds great, the name is really good as well!

I have a soft bricked Datel card here to try this out on. The original xflash didn't support the EEPROM, but xflash might.
I suppose it'd be best to build and use a serial cable to go with it.

Who do you want to contact?
I can pm them and link to this thread here.

There is an oversight/bug with the BIOS that prevents the controls from working when the lid is open.
Close the lid and it should work

Best if you find yourself an SCPH-7000 or later and the "SCPH_9000_3RD_ED" service manual, then use the video encoder section. It has great quality and detail and all your signals will be there. Once you have something, it will be just a matter of mechanically adapting it to the older PU-1...

Is the picture also noisy and unsharp?
If so, the TV probably expects a signal that the cable doesn't provide (RGB switch signal).
This is rare, even with cheap cables, so idk.

Well, as I warned in the other thread: This mod will give you color, but it will look very bad. Moving dot crawl all over the screen bad. If you want to sell the console, it's better to just include an RGB cable. As far as I know, these mods aren't being made anymore. You'd have to build it yourself...

Nextria: Search this forum or Google for PSX color oscillator mod. This is what your board needs. But it is a difficult mod and the result looks pretty bad. I recommend you use a later revision PSX. postal2201: The code uses direct port control where speed is required, and can use Arduino functions ...

postal2201: Some ideas are good, just need to implement them :p - The oscillator mod won't fit onto ATtiny: No pins left. - Automatic region detect sounds doable. Not sure how reliable it'll be in practice, but doable. - Removing Arduino functions: Why? They're nice and useful. Using Arduino is, imh...