Oscillator Setting (swimming through treacle)

[MikeFahey]

#include <P16F1823.inc>

__CONFIG _CONFIG1, (_FOSC_INTOSC & _WDTE_ON & _PWRTE_ON & _MCLRE_ON & _CP_OFF & _CPD_OFF & _BOREN_OFF & _CLKOUTEN_OFF & _IESO_OFF & _FCMEN_OFF) ;18uA
__CONFIG _CONFIG2, (_WRT_OFF & _PLLEN_OFF & _STVREN_OFF & _BORV_19 & _LVP_ON)

#define OSCCON__16MHz b'01111000'
#define OSCCON___8MHz b'01110000'
#define OSCCON___4MHz b'01101000'
#define OSCCON___2MHz b'01100000'
#define OSCCON___1MHz b'01011000'
#define OSCCON_500KHz b'00111000' ;OSCCON default
#define OSCCON_250KHz b'00110000'
#define OSCCON_125KHz b'00101000'
#define OSCCON__64KHz b'00100000'
#define OSCCON__32KHz b'00011000'
.
.
.
BANKSEL OSCCON ; Switch internal clock speed ...
movlw OSCCON___4MHz ; From settings above
movwf OSCCON

This is with the PLL disabled

[mister_e]

sure shot, but BANKSEL and PBP are really poor bedfellow. you want to use CHK?RP instead on the asm side. Still, there's no advantages to define it on the asm side.