#FAST_IO for certain pins

[rikotech8]

Hello
I would like to ask you this:
How can I tell the compiler to produce a TRIS direction code only for some pins? Let say we have PORT A with 8 pins form A0 to A7. I want a fast reaction from pin A0 when I set it's state. For the rest 6 pins (A1-A7) I want the compiler to generate a TRIS direction code.
When I read the manual, its written:

[PCM programmer]

No, because only the last directive takes effect. The fixed_io cancels
the fast_io. And fixed_io writes to the whole TRIS register every time
anyway.

[rikotech8]

10x
_________________
A person who never made a mistake never tried anything new.

[asmboy]

in my work , deciding to declare FAST_IO depends
on how a PORT will be used.

in specific - if speed MATTERS - such as accessing a byte wide SRAM chip's
data pins- ONLY FAST_IO makes sense, since a single unmasked instruction
"does it all". the rest of the time , default CCS "smart" / on the fly TRISIO
is much simpler. pick one or the other and you will be happy.

The other case where fast_io is helpful is where you never, ever anywhere in your code change TRIS, though this might be a CCS version dependent optimization.
Then set TRIS at the top of main() and forget it.