Quote from: Naibo on November 13, 2009, 06:06:09 PM

What are the Lables/Models of these 2 ICs, on the C-RAM Board?
(The red circle on the right indicate some photoshop mis-aligns).

On the first picture, here's the ref for the IC located at 2J,2F, 7J, 7F on C-RAM PCB :

232782JAS
SN74S1057SC

What is the board on the second picture?

On the 2nd picture it's the CPU board. However, some other boards also have similar mis-align, on their slope-border.

Some tips I summerized for joining scaned pictures:
1. Make the join-border vertical or horizontal, instead of slope;
2. Noticed that most circuit on the CPU board's component-side are vertical, so scan it upper-and-lower, instead of left-and-right may avoid most mis-alignment.

I've downloaded your newly scaned CPU pitctures. They're pretty good. So you needn't re-scan them.
Have a nice trip!
 

Yes, I saw some difference between the 2 obj boards.
Actually, there are also some different in software side I've noticed, the palette structure, for example.

I'm submitting my galaxian3td driver to MAME soon. I'll update the 3D Model Viewer as well, since its own palette has recently been extracted , we needn't borrow it from starblade anymore. 

BTW, for those PCB pictures for galaxian3td, could you send me their original scans, before photoshop's joining? Since there are some tiny mis-matches in the joined border, although not a lot, a few important signals are affected.

Let me send you my email address by message?

Because it's a big work, can you tell me on which boards to work first ? Hope this can help 

The scaned pictures are excellent. It helps a lot for tracing circuit.
I know that scanning these boards is a big work, let's start from master CPU & CRAM boards first, then each one of DSP, PGN & OBJ later...

Hi, DarthNuno,

Congratulations for your Space Invader!

As for Galaxian 3, I'm doing analyzing on it, hope I can extract its correct colour palette this week.

Your PCB photos helped a lot, especially the scaned picture, it's very clear. If possible, could you scan other boards, with their bottom sides as well?

Sincerely,
Naibo

Yes, I played "Zolgear" 10 years ago, in Tianjin, China.