Hi Everybody...
I have some questions (technical ones) about the TIA chip of the Atari 2600. Hope someone will help me...
There is a difference in the pinout of both versions (NTSC and PAL) of the TIA. Attached to this message are the pinouts:
TIA-NTSC.png
TIA-PAL.png
During my investigations I found discrepancies in the pinout assignements of the CS0, CS1, CS2 and CS3 lines. The questions are:
1. what are those CSx lines for ?
2. Are the assignements in the attached files correct?
3. Why CS0,CS1 and CS3 are low bit enable and not CS2?
4. What is the !BLK line for?
5. What are the PAL-I and PAL-S lines for in the PAL version?
6. Does any one has a Field Service manual for the Atari 2600?
Thanks for any reply and any help...
Emmanuel.