Register error

[Giuseppe MPO]

One thing that I cannot explain.
I have to update a 16 bit register of a CIP using a word variable.

If I do it in this way:

AT1CC1  = Impulso

checking the output waveform with an oscilloscope, it is not correct.

Writing like this:

AT1CC1L  = Impulso.LowByte
AT1CC1H  = Impulso.HighByte

everything works perfectly.

Aren't two ways equivalent?
Why two different operations?

[tumbleweed]

In the 8-bit devices, all of the SFR's are 8-bit.
None of the registers are defined as 16-bit.

[Giuseppe MPO]

Thank you