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Braze Technologies |
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Innovative solutions for the "classic" arcade collector
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Mario Bros. High Score Save Kit --
Trouble Shooting |
A common mistake is not having the daughter card inserted correctly, either
hanging over the socket by 1 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.
The Mario Bros high score save kit will perform
a very simple powerup selftest of the HS daughter cards on powerup. Should
this mini selftest fail, the text HS FAILURE will appear on the
bottom line during the very first attract mode screen. After that,
it is cleared by the subsequent attract mode screens, so you need to check
for this immediately after powering up the game. A sample screen showing
the failure is shown to the right. If you see this failure, most likely
that means that one of the socketted 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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