In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Peter Van der Zee wrote:

Guenther;

You are absolutely correct. in your assessment.

It also behooves one to realize that on RESET of an SX48/52, that same 5th bit is NOT AFFECTED. So after a reset (not the same as a POWER-UP), the 5th bit may be set, or reset, depending of the previous state.

For greater certainty then, one should only modify the MODE register in an SX48/52 with transferring the content of W through a mov m,w instruction.

Cheers,

Peter (pjv)

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