I am currently restoring a real Pong PCB, and your descriptions here really help me in finding faulty parts. So far, I have replaced 2 TTL's (7400, 74161 (as a 9316 replacement)) and the game runs perfect now.
Great work with the simulator! However, I noticed some differences between the real Pong and all simulations:
- The graphics are mixed through resistors, which means that all elements are bright grey, and everything which overlaps with the ball is white.
- I have to investigate it further, but it seems that on the original, the second paddle is displayed 4 more pixels to the right
Again, great work! Shame that on some entries, the pictures are slowly vanishing...
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Pong Project
in DanBoris' Tech Blog
A blog by DanBoris
Posted
Excellent Blog, Dan!
I am currently restoring a real Pong PCB, and your descriptions here really help me in finding faulty parts. So far, I have replaced 2 TTL's (7400, 74161 (as a 9316 replacement)) and the game runs perfect now.
Great work with the simulator! However, I noticed some differences between the real Pong and all simulations:
- The graphics are mixed through resistors, which means that all elements are bright grey, and everything which overlaps with the ball is white.
- I have to investigate it further, but it seems that on the original, the second paddle is displayed 4 more pixels to the right
Again, great work! Shame that on some entries, the pictures are slowly vanishing...