Project update (please don't be mad at the quadruple post): Hardware issues with SD2PSX and newer MemCard Pros have been resolved, and so have most edge cases for weirdly formatted SYSTEM.CNF files! The Github isn't updated yet so stay tuned if you're a lurker actually looking for the patches. All t...

I've released my patches and instructions on my github: https://github.com/jdfr228/PS1-Disc-Based-Game-ID Any feedback or testing is welcome, I don't have a lot of hardware to try it out with. So far limited testing has been working! Funny enough I'm still waiting on my memcard pro, but mi213, whose...

A programmer is just a GPIO board with socket and some small software with the programming sequence. That doesn't need to be expensive, especially when using flash chips (that don't require any special programming voltages like eproms). There are probably some simple DIY circuits around. I'll poke ...

EDIT: I have purchased chip flashing hardware and no longer need this! I'm working on a BIOS modification and I'm hoping someone can sell me a pre-flashed replacement EEPROM. It can be flashed with the nocash PSX-XBOO firmware or Sony stock. I tried buying this board from the UK, but I need the /WE ...

I finally got this board in today from Will's Console Mods in the UK- https://www.willsconsolemodifications.co.uk/index.php?route=product/product&product_id=55 Unfortunately it's going to be difficult to work with and I don't think I'll be able to broadly recommend it. On the replacement TSOP fl...

I've got a modchip and would love to test off of CD-R's since I have plenty, but given the crux of the code is a BIOS modification I would think I'd either have to fully load a modified BIOS (512kB, not sure there's any method to do so), or append the code at the start of a game's executable and see...

Dang I just needed to read one paragraph further, sorry for the trouble on that one. Wouldn't affect the Memcard Pro but good to know what a reasonable timeout is anyways (I ballparked it very generously but not enough for 31,000 cycles lol). Well, I think that's everything I need then. Didn't hear ...

Pretty much done now I guess. Just curious what anyone thinks the best way to handle the lack of an ACK signal should be- https://i.imgur.com/mQSf2w7.png The final 4 bytes do not send an ACK signal, just changes JOY_STAT bits 1 and 2 for TX finished and RX FIFO available. Should I just hardcode a sk...

Finished a big refactor tonight since I was out of memory space for the code. It's pretty tight and well-documented now, and I should be able to finish up the controller handling tomorrow hopefully. Still have no clue how I'm going to test this though. Short of outright replacing my BIOS chip with m...

Good luck getting it working. I was asked by some to see if I could support it in Stealth Unlocker. I'm willing to add support for it but it seemed overly complicated at the time, and not having the real hardware to test with made it pointless to even attempt. Well that and ofcourse no emulator can...

0) There is no difference between sending command bytes and sending data bytes. That said about sending bytes , the README.md is using a different notation: CMND=SendByte, DATA=ReceiveResponseByte. 1) Yes, the memory card determines what it considers as valid. The memcard pro thing should accept th...

Everything is built and ready to send to the memory card, but I don't think it's anywhere near as easy as just shoving the data into the JOY_DATA I/O address (1F801040h) like I'd hoped. I am not experienced with low-level I/O and I'm a little lost and wondering if there's a split between sending com...

Things are going fairly smoothly now, thanks for everything so far nocash! Is there a simple way to zerofill n number of bytes after my assembly? Or even better, a way to calculate how many bytes to be zero-filled? (Number of bytes of empty memory available (known) - size of assembly in bytes (calcu...

So it's assembling properly, creating a .ROM instead of a .EXE, it's just always getting appended to the end of the generated ROM image. Offset and len don't seem to do much of anything... Am I misunderstanding the purpose of the .import function? I want to take the assembly code below .import, and ...

That did the trick for accessing those regions in the editor. And misspoke slightly on the .import function, of course it's going to convert it to binary first, point is avoiding painstaking manual hex editing work so that's good. I'm having some trouble with the import command though- if I assemble...

CTRL+G to jump to an address in NO$PSX and enter the address as hexadecimal without the leading '0x' prefix. Surely I'm missing something obvious? https://i.imgur.com/mpBHtp6.png https://i.imgur.com/3o7NZc0.png Like I said before my current solution is to search for a debug string ("KERNEL SET...

What's the best way to get to the "BFC" BIOS code section in the no$psx debugger? Goto... doesn't want to take me there, I had to resort to searching for a string I knew was in the BIOS and then scrolling up really far to get to BFC008A0. My findings so far are: - Zeroing out/nop'ing 0xBFC...

You want to forward the game ID from SYSTEM.CNF to memory card? Yes, of course that's possible. Do you have any documentation or source code showing what exactly is to be written to the memory card? With a custom BIOS it would be no problem. One could easily patch the official BIOS, or I could also...

I'm frustrated that the current solution for a slim PS One + Memcard Pro's automatic Game ID-based page creation requires using FreePSXBoot and UniROM to pull the Game ID from an actual disc. That requires the somewhat lengthy FreePSXBoot sequence of starting the system with the lid open, starting t...