Answers below:

At 12:50 AM 10/26/2003, you wrote:
>;*****************************************
>  IFNDEF _DLYMACRO_INC
>#DEFINE _DLYMACRO_INC
>
>         INCLUDE "p16f628a.inc"
>
>DLY_10ms                macro
>
>; Delay = 0.01 seconds
>; Clock frequency = 4 MHz
>
>; Actual delay = 0.01 seconds = 10000 cycles
>; Error = 0 %
>
>
>FIXED_REGISTERS UDATA
>  local d1, d2
>d1      res     1
>d2      res     1
>
>         CODE
>Delay_10ms
>                         ;9993 cycles
>         movlw   0xCE
>         BANKSEL d1
>         movwf   d1
>         movlw   0x08
>         movwf   d2
>
>Delay_0
>         decfsz  d1, f
>         goto    $+2
>         decfsz  d2, f
>         goto    Delay_0
>
>                         ;3 cycles
>         goto    $+1
>         nop
>
>                         ;4 cycles (including call)
>         BANKSEL 0
>         return
>
>         endm
>
>  ENDIF
>;*********************************
>
>it assembles with MPASM and it isn't any different than the psuedo code i
>put in my
>original post.
>
>1) is BANKSEL 0 as opposed to BANKSEL varname_in_bank0 acceptable?

Yes. MPASM assumes '0' to be in the default radix and will generate  the
proper code. It will generate

movlw   0
movwf   PCLATH



>2) what code does the psuedo-mnemonic "BANKSEL var" generate?
>         a) bcf STATUS, RP0  ??
>
>                 -or-
>
>         b) movf FSR, bank2var
>             movwf INDF

No. It has nothing to do with FSR, only PCLATH. It generates:

       movlw     bank2var
       movwf     PCLATH


HOWEVER, If you are using any MPLAB before 5.4, MPASM sometimes makes an
error in its generation of BANKSEL. I therefore long ago replaced BANKSEL
with my own MACRO, which never made an error after the change.

Finally, since BANKSEL is actually a 2-line macro substitution, your code
will NOT work properly if you use any skip instructions with it, such as:

BANKSEL bank1var
btfsc   STATUS,C
BANKSEL bank2var
etc
etc

--Bob


--------------
Bob Axtell
PIC Hardware & Firmware Dev
Tucson, AZ
1-520-219-2363
"I lose some on each sale but make it up in volume."

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