Understanding .LST file

[gjs_rsdi]

Hi

I am trying to understand the .LST file
I learn already (on the forum) to make the file with Symbolic format for easy understanding.
In the .LST is written for example:

[PCM programmer]

It means RAM address 0x78.

[gjs_rsdi]

Thank you very much PCM programmer
Helpful like always

Best wishes
Joe

[Ttelmah]

Worth just giving a little extra data here. In punctuation, the '@' symbol is
normally referred to as 'at'. So the instructions access the memory 'at'
the specified location. Simple, and once you use this name, quite obvious.

[temtronic]

this....
MOVWF @78

..can be read as...

'MOV'e the contents of the 'W'orking register to the 'F'ile 'AT' RAM location # 0x'78'.

PIC ASM is rather easy, only 35+ instructions to know. Unlike say Z80 or 6811, with 100+.

Motorola had a one bit micro, with only 16 instructions...

[gjs_rsdi]

Thank you Ttelmah and Temtronic

And this:

[Ttelmah]

Exactly understanding that the '@' is being used as shorthand for 'RAM at',
makes it much easier to understand.

[gjs_rsdi]

After reading again the answers, I am assuming correct that the below code is moving the content of ram location 78 to W?

[temtronic]

From the instruction set chapter of the 46k22, but applicable to all PICs...

The contents of register ‘f’ are moved to
a destination dependent upon the
status of ‘d’. If ‘d’ is ‘0’, the result is
placed in W. If ‘d’ is ‘1’, the result is
placed back in register ‘f’ (default).
Location ‘f’ can be anywhere in the
256-byte bank.

MOVF @78,W

So in this case 'f' is RAM location 0x78
'W' is the Working register....

[gjs_rsdi]

Thank you Temtronic

Best wishes
Joe