Congo Bongo    High Score Save Kit -- Trouble Shooting

A common mistake is not having the daughter card inserted correctly, either hanging over the socket by one pin, or in backwards. In this case you will usually just see the powerup garbage on the screen. This garbage is just the random bits that are in the character RAM at powerup, and it indicates the CPU was not able to run.

Another common mistake is for the Z80 CPU to have been inserted incorrectly, either backwards, or possibly with a pin bent that did not insert into the socket properly.

Power On Self Test (POST)

The Congo Bongo high score save kit will perform a very simple powerup selftest of the HS daughter cards on powerup. The results are displayed briefly before transitioning into gameplay mode.

Included in this display is the current DIP settings.

Congo Bongo boot screen

If the powerup selftest fails, a message indicating the failure will be displayed on the screen.

A sample screen showing the failure is shown to the right. If you see this failure, most likely that means that one of the socketed chips on the daughter card is probably lose. Check to make sure the 8 pin dip (the smallest chip) on the HS daughter card is fully inserted into its socket.

Congo Bongo high score fail