GET_TRIS_A() command

[stewc]

Hi

Is the command

[PCM programmer]

Look in the I/O Port section of the 12F509 data sheet. There's a
schematic of a circuit for an i/o pin. Compare it to the 16F877
data sheet. You'll notice that the 12F509 doesn't have a tri-state
buffer going from the TRIS latch to the internal data bus. But the
16F877 does have it. Therefore you can't read the TRIS latch on
a 12F509. That's how you find the answer to this question.

Actually, also on that page in the 12F509 data sheet, it says this:

[stewc]

I got confused because the user manual says

Availability: All devices

Thanks you

[Heath]

Datasheet always beats the ccs user's manual.