Mainboard 81-180

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The 81-180 mainboard is used on the Kaypro 10 '83.

81-180 B

Monitor ROM No Label

Char ROM 81-187

81-180 C1

Monitor ROM 81-302

Char ROM 81-235

Some changes between 81-180 B and C1

The most significant changes between the boards includes:

The movement of U72 from the middle bottom of the board to the right bottom
U7 goes from being empty to unlabeled

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