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

Carl,

as long as you have I/O pins configured as inputs, you can't manually change their states with the debugger. The displayed states in the debug window show what the SX "sees" at those pins, i.e. the external levels. These states may change randomly if you leave the inputs floating, so you better connect pull-up or pull-down resistors.

When you configure an I/O pin as output, the associated latch in the port output register is internally connected to the I/O pin. The debugger still displays what it "sees" at the I/O pins - in case of outputs, the output states are shown now. You then may manually change these states with the debugger.

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