Dk cpu mb8884n

CamaroMurph

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I have a DK 4 board set that I am repairing. I removed the CPU chip on the sound board to clean it, got it nice and clean and went to reinstall it and that's when I noticed........

This chip does not have the normal round chip identification mark on the one end. I can't tell which end is which to put it back in. It has a long line running end to end on one side.

I can't find a datasheet anywhere on this.

Help........
 
The only time I've come across that type of orientation marking is on the Capcom CPS1 mask ROMs which have the line running along the 'pin 1' side, like so ->

1070498759.jpg
 
the long line is pin 1 side place in slot with the long line side on pin 1 side of socket all chips will face in one direction so look at the other chips for their pin 1 orientation and that will tell you which side is pin 1 side.
 
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