Let's get some things straight (Dev HW misinformation)

I know but it helps some people out, especially new people.

I do have a question though. What does the motorala 68K CPU do thats on the debug PSX, look at the very last picture.

 

one last question there isn't anything I need to look out or surprise when I open the metal can to expose the M/B, right?

 

I dunno never knew it was there. It most likely acts similarly to a PIC and provides the SCEX signal or whatever it's called necessary to boot any disc. Or maybe it has some special dev related functions or something.

 

alright then.
it's half past three over here so I won't be able to do much till 9-10pm tonight when my daughter goes to bed...

I can imagine what missus gonna say...

 

I desoldered the metal shielding on the 7001 PSX and it still works. Just watch out for static shocks that can short the mobo.

 

Take the pics at your leisure, no ones in a hurry especially not me

 

i usually follow procedure when I open these things - even have one of those fancy wrist band thingy...

 

a static absorber? wow, you're on top of things. Haven't used those since working on a PPC Macintosh, guess someday I should buy one if I ever handle other people's equipment

 

Dont worry about the wrist band unless you have a hardwood floor and live in an environment that has close to no humidity in the air. Living in FL does have its advantages.

 

Carpets attract static moreso than hardwood and most of my house is hardwood and my room is carpetted. Right now the cold temperature/steam radiators charge my cats into walking static bombs.

 

no carpet in my house - we pulled out and I put those DIY timber floor kit before my daughter was born. Took me four weekends and at the end I had to work close to 24 hours non-stop almost breaking my back...

and my cat lives outside only as missus hates cats...

 

well i think there is something about the difference between green and blue debuggers... i remeber that we only had a blue one when we were doing our ps1 game, the green one imho has a modiefied bios to inject disc-read errors to give you a chance to test your error-handling on cd access.

i think i have actually seen this in the ps1 docs or trc.

 

alright.
as promised here are the internal shots of M/B.
These are all compressed to fit on imageshack server - under 1MB - from their original 1.3MB.













cheers

 

I'm pretty positive that the Motorola is some sort of disc controller thing. But are you sure it's a 68000? More likely it will have a slightly different part number, as I imagine it having some DSP functions and built-in CD buffer (which is only 32K). I'd dig out my SCPH-1002 mobo once more to compare it with the debug but its buried under a stack of boxes and Soviet hats :smt042

 

How come mine has more chips than yours?

 

Different revision maybe? Not only were there various hardware revisions, there have also been sub-revisions - for instance, dj898s board is a PU8 but there are also PU7s.

Oh yeah, and what's really odd about dj898's pictures - there's no country jumper set, they're all empty (the 6 solder pads near the RCA connectors)

 

I'm glad someone knows how to use their camera's focus Nice pics.

The reason why he has less chips is because his board has only one chip for every RAM. This is a Green debug remember, it did come out after the blue ones. By the way, which DTL number is this?

If the green debug is laid out similarly to the older DTLs, the Toshiba chip underneath the Sony CXD8606AQ is the WRAM. dj898, could you write out the part name? Thanks

 

this is DTL-H1200 board and the chip under that big CXD8606AQ is Toshiba 9837KA(?)0 JAPAN TTK1(?)6. This is what I can read from original photo. If it's incorrect I will have to open the thing again... :-(

cheers

 

any idea what those two copper thingys in the middle of board? I believe they connected to the metal shield when it's put on...
what's the use for it? Just curious...

 

Yeah the copper things are to touch the shield (which is ground) I don't feel like looking up the part now but I think that unknown number/letter in the Toshiba may be necessary.