PS Hard Disk Drive

If you want to analyze MIPS ELF binaries,I recommend REC.

 

Thank you for the advice :thumbsup:

I will look into that.

To clear things up;

- Do you mean MIPS as in a Microprocessor without Interlocked Pipeline Stages?
- ELF meaning Executable and Linkable Format?

- What is a REC?

(Got that from Wikipedia. lol)


Explain what these will help me do compared to an FPGA?

 

The PlayStation uses a MIPS cpu, and ELF binaries... so... if you wanna be able to look at code that's running on the PS, you'll probably want to know/be able to look at MIPS code, perhaps in an ELF binary.

 

I've only got the playstation side hardware, which plugs into the parallel port but is blue. It's on my todo list to reverse engineer it, but it's not at the top. There is an extra 2mb of ram on it as well, although I don't know how to access it either.

While it's a technical curiosity, it's unlikely to be of any real benefit. It's no real different from the pcdrv: except it redirects cd reading at the sector level.

The major intriguing thing is there is a label stuck over a psyq logo molded into the case. Someone must have had a load left after sony stopped sn from shipping something similar.

I'm on the look out for the original psyq cartridge, but it seems very very rare.

 

I knew it was a MIPS processor, but I thought MIPS as in Million Instructions Per Second :-0

What was (a) REC?

 

The PSY-Q had 6 MB of RAM onboard. I think for testing uncompressed data, and for debugging purposes.

 

For fuck's sake mate, it's the first hit on google for "mips rec". Use your head.

 

lol

You don't think I tried that...

Stay under control. This is all new to me...


So the whole time it was a program?

http://www.backerstreet.com/rec/rec.htm


I was looking for information, but now I know...

 

So dump data from the CD-ROM / SPU IC with a FPGA and decode it in MIPS rec :thumbsup:

Correct?

 

UPDATE

Got the laser diode pinouts as well as the sled motor pinouts. Useless, but not for the Slot Loading Drive I am working on ;-)

New topic when it is all working :Rock:

 

isn't easier to add SD support since it has serial and emulate de cdrom via some software on a cd or maybe if the drive is dead via a bios mod or thru the pio? IMO the PATA interface is dead by now, and SATA is just too much for a PS, why someone would need more than 32gb on a PS?

 

SATA? lol.

I was going to use an SD card and then try a HDD.

32GB for a PS would be perfect. You could fit every game you liked on it...

Final Fantasy would load instantly and so would Resident Evil.

 

Update:

I got my Altera DE1 FPGA.
Also got a Arduino UNO.
I then also got, a EEPROM reader / writer.


Time to start ha><ing and learnding

 

Playstation uses PS-EXE format for the executable. YAROZE files uses ECOFF (huh? never heard of that format) format with libraries already linked. Pretty custom and NOT ELF AT ALL.

Playstation 2 uses ELF as binary format.

 

OK I sent a request to assembler to delete this topic.

I will start a new one, that is serious towards the project WHEN I get something up and running as someone said...

 

Bump, can we get a mod / admin to delete this please?

 

LOL

 

Please don't delete this, its a wealth of great knowledge that would be a shame to have disappear from the forums forever.

 

I have backed it up, so I can send you the files if you want.

I will start a new one, with correct information in it, and based around the actual development instead of useless mumbling garbage.

 

i agree it must stay, its golden :dance: