Explanation

The clock mode setting is the byte-sized value, determined by the application at compile time, from the CLK register. See CLK Register for explanation of the possible settings. For example:

Mode := clkmode

This statement can be used to set a variable, Mode, to the current clock mode setting. Many applications maintain a static clock mode setting; however, some applications will change the clock mode setting during run time for clock speed adjustments, low-power modes, etc. It may be necessary for some objects to pay attention to the potential for dynamic clock modes in order to maintain proper timing and functionality.

CLKMODE vs. _CLKMODE

CLKMODE is related to, but not the same as, _CLKMODE. CLKMODE is a command that returns the current clock mode (in the form of the CLK register's bit pattern) whereas _CLKMODE is an application-defined constant containing the requested clock mode at startup (in the form of clock setting constants that are OR'd together). Both may describe the same logical clock mode but their values are not equivalent.