In SX Microcontrollers, SX/B Compiler and SX-Key Tool, robotworkshop wrote:

A couple questions about your setup...

- How are the boards connected?  Are you using logic level serial or RS-232 style with something like a MAX232 driver between each board.

- How close are the boards?  Is it a very short connection between the boards or is it a longer run?

- Are the boards using the same PS or separate ones?

- Do you have any filter caps on the PS and small .1uf caps at each IC where the power comes into the chips?

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