bankA issues

[SteveB]

Shouldn't the ASM intructions include the memory access bit=1, as indicated by the bold changes, so that the command uses the bank selected by BSR rather than the access bank?

I’m responding to my own post/question. This will save Darrel the trouble and may help others.

After more careful examination of the datasheets, it looks like the default values for ‘d’ and ‘a’ are 1 for most of the 18F instructions. This is not clearly listed in “Complete PIC18 Reference Manual,” but was listed in the 18F4620 datasheet, so I missed it on first inspection. That being said, it appears that the previously listed code could be simply:

    CHK?RP    _V24
    incfsz    _V24
    goto      NoCarry
    incfsz    _V24 + 1
    goto      NoCarry
    incfsz    _V24 + 2

This would default to saving the result back to the _V24, and using BSR to select the bank. Haven't checked ALL the instructions that use these bits, nor ALL the 18Fs, so YMMV.

EDIT: I also found this note in the datasheet:

Note: If the register is specified with the full 12-bit address, the assembler will automatically force the access bit to a ’0’ (when the address is in the access RAM area) or a ’1’ (for all other addresses).

Steve