To make it a bit more clear what you are talking about, here is what you had posted in the other thread: With the great Pikuma tutorial for PS dev i setup my PS Dev PC new. Im looking to use the h2500 with the best option for IDE and debugger. ATM i using the Code Warrior release 5 with update DECI ...

Going by the http://www.psxdev.net/forum/viewtopic.php?f=69&t=56 BIOS Collection thread there aren't any known DTL-H2500 bioses, but ... Going by the above posts there are at least three DTL-H2500 bioses... - a SN bios - the DECI - H25bios Does somebody know where those BIOSes come from, are the...

Can't help there. But I am curious: What is in those memory chips? As far as known, the DTL-H2500 has two memory chips, IC807-2 32pin MX 27C1000MC-90 (PROM) IC808 32pin F 29F040A-90 (FLASH) I assume the 512Kbyte FLASH is equivalent to the BIOS/Kernel in retail consoles, perhaps with some modificatio...

Could work. But if you have to ask how, then you probably can't do it, not without knowledge about software development and cdrom mastering. The best way would be to add data compression, and see if you can squeeze everything on a regular cdrom. With the HED/CDF filesystem(s) in Parasite Eve 2, that...

If someone has used your account - no matter how it was done - that's called hacked. Spam is flooding forums or email inboxes with things like unwanted advertising. First thing is to change your password, and if you have used the same or similar passwords on other sites, also changes those passwords...

That's new, the spammers are now hacking existing accounts from real people, instead of creating their own accounts. User "alimadhi", http://www.psxdev.net/forum/search.php?st=0&sk=t&sd=d&sr=posts&author_id=416 Apart from the Dating spam post, the signature (in all other po...

Anti-modchip is yet something else:
A modchip does simulate the SCEX wobble (which SHOULD only occur in Lead-In area, but many early modchips do simulate that SCEX signal everywhere including in the discs data area).
Anti-modchip protections do check that SCEX does occur ONLY in Lead-In area.

Is that a question or an announcement?
And what is a archive.org psx redump website?
If you meant http://redump.org/ or http://redump.org/discs/system/psx/ - those aren't down.

EDC's are CRC32's inside of the 930h-byte data sectors.
Libcrypt uses bad CRC16's in the sub-channels, that require a .SBI or .SUB file (or other sub-channel dumps).

SPU Soft Reset If and as long as SPUCNT.bit15=0: All voices are Keyed Off, writes to Key On are ignored, and all voices are forced to ADSR volume=0000h. That is about same as FLG.bit7 on SNES APU (with big thanks to Anomie for rev-engineering the SNES hardware). Unstable 32bit SPU Writes One long-s...

Is there any documentation for the SQ BD HD format used on PS2 ?

I am using cable boot, anyone else knows more about cdrom booting.
Gameshark cdrom might work, too. Although when saying exploitable game disc, I did of course mean a game disc, not that gameshark disc.

It's all working. And can differ on comfort, speed, capacity. Without any soldering, you would need an exploitable game disc, and burn a bootloader to memory card. If you store your game/exe on memcard, too, then it could be max 100 Kbytes. I'd expect that each boot takes about 30 seconds (depending...

With or without soldering?

All psx sectors are MODE2 sectors, which are usually 930h bytes tall, and contain only 800h bytes of data (or more for audio sectors). So you need to slice your TMD file into 800h byte snippets, and insert those at the correct location in the 930h byte sectors. And then fix the ECC/EDC in the remain...

Thanks -- if I may clarify, what am I looking for, or what am I looking at? Yes, what did you do exactly, and did you run into any specific problems? As by now, your question is a bit unclear. ISO is slang that might refer to "the cdrom filesystem" or "the whole disc image" or &...

One MAX232 chip should work fine for RX, TX, RTS, CTS. I don't know if RTS and CTS are needed or not, but it would be crazy not to connect them as the MAX232 has enough spare pins for that. DTR and DSR are probably not needed (or if they are: You can wire them to "always ready" state, so y...

The same timing problem than what? Nobody mentioned any timing problems. Anyways, the timing problems I could think of: Vblank accuracy is approx +/-0.001 minutes, but I doubt that even audiophiles could hear differences between 119.999 bpm and 120.001 bpm. PAL vs NTSC have different vblank timings....

Cool. Depending on what hardware you have, it might easier/faster to just check if the CRC32 of the BIOS memory does match up with known dumps. For example, in this tool http://www.problemkaputt.de/psx-diag.htm select "General Tests", and it'll compute the CRC32 and display it on the TV sc...

Thanks for the part numbers, I have added them to the http://www.psxdev.net/forum/viewtopic.php?f=70&t=1065 thread