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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.
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Congo Bongo high score fail |
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