does the SCPH-990x PS1 exists ?

Oh nice we can get a dump of that bios i would like a replacement bios for my console will be cool.

 

the only NTSC U/C PS1 that has the S-Video port is the very early DTL-H1001. The internal is pretty much the same as the SCPH-1000.

Very interesting info about the 55xx. Thank you for sharing that.

 

Yeah,I think the 55xx is a redesigned 100x with a newer boot ROM but same animation(notice that until 7000 the SONY and COMPUTER ENTERTAINMENT text didn't fade,just appeared all of a sudden).Maybe both 100x and 55xx use the same DAC?

 

the boot animation is just the bios

 

Exactly,but some differ.Compare a 55xx boot animation to a 750x or 900x boot aninmation and you can see the 55xx is a bit longer.

 

"Made in USA" <- Final assembly done in the US and all or substantially all parts are of US origin.
"Made in USA with foreign [and domestic] components" <- All or substantially all manufacturing processes are done in the US. Parts are entirely [or partially] imported.
"Assembled in USA from foreign parts" <- Final assembly is done in the US, but other manufacturing steps are not.

The second two correspond to what's known as "CKD" (complete knock down) and "SKD" (semi knock down) - the fact that the PSX in question doesn't say "foreign and domestic components" makes me suspect that it was shipped by Sony as a full component level (I.E. CKD) kit. This used to be quite common - but now that NAFTA is completely implemented it's cheaper for companies to ship stuff as SKD kits to Mexico, assemble them in one of the Mexican EPZs and then ship them to the US, since that way they don't have to pay any duties to the Mexicans (since it's a bonded export processing zone) or to the US (since Mexico and the US are both NAFTA).

 

The boot animation has nothing to do with audio quality.its just different BIOSes.

5xxx isn't an audiophile console, your whole reasoning seems to be the boot animation

 

Actually,someone really used a 5xxx as a CD Player,as opposed to a 100x.
View attachment 8537

 

That doesnt mean anything though, I can use any model PS1 as a cd player.

 

Yes,but best systems to use as a CD Player are 100x,5xxx(and probably 700x too)
750x and newer systems don't have as good quality as those 3 types of PS1,as the older 100x-700x systems have the same DAC chip on them,while 750x and newer don't have the same DAC quality.(or don't have a DAC at all)

 

Evidence, not just words please.

They all have dacs (might be integrated though).

You seem to be reaching conclusions based on things that arent relevant (i.e. the whole bios thing, which has nothing to do about audio quality).

Also, the whole audiophile thing is pretty out of date - "Clearly compared to modern DAC's, the PS1 has inferior noise performance and concomitantly lower dynamic range. "

 

What a shit! Audiophiles....
ahahhahahah lots of times are very funny with their teory (like, blue led improves reading quality)

 

Probably.I kind of dunno to say overall.
Now let's get back on topic.(of thread)

 

"foreign components" made entirely out of radioshack parts and corn cobs....

 

Could be so.

 

Well i had a japan scph-5000 Audiophile. has a pu8 pcb inside.

 

oh look its button lol

 

The ROM dumping tool also has a useful little tool you can use to send arbitrary commands to the CD controller. If you can boot that, you can see how it responds to the 0x1A command, "GetID", to see whether it's reporting the SCEx string.

There is a debug command on the CD controller that displays a string like "for U/C" and others that would also be useful information. I'd have to dig it up, but I put that information on this forum =)

 

0x19 0x01 0x22 = Gets territory information ("For Japan" / "For US/AEP", etc)
0x19 0x01 0x23 = Get P/N of CD analog front end chip
0x19 0x01 0x24 = Get P/N of CD DSP chip
0x19 0x01 0x25 = Get P/N of CD Interface chip

Note that although the information given by the last 3 is useful for identifying the board it's not always accurate.

 

Shame that there are 2 people who have the console, but nobody seems to be able/willing to check the BIOS..

Since it can boot CD-R's, all that needs to be done is burn the PSX ROMID .bin/.cue to a CD-R and run it.. PSX ROMID can be found here: http://forum.redump.org/topic/4991/...psx-bios-directly-on-console-control-cd-unit/ (the files are in a folder inside the .7z archive).. It will report the crc32 value of the BIOS and tell you if it matches a known dumped BIOS.. In the event that it doesn't match an already dumped BIOS, you'll need another tool to dump it (which was mentioned earlier in the thread).