Delay question

[mister_e]

I think it will use the CHK?RP macro simply for safety sake. sure the code is not optimized in any sort, but it's always solid as rock. When you need something tight, use ASM. Hence, for safety sake and for none 18Xxxxx your asm example could be...

ASM
    CHK?RP    ; make sure we are on the right BANK
here
    bsf PORTB,1
    NOP
    NOP
    bcf PORTB, 1
    goto here
ENDASM

PORTB.1=0 call MOVE?CT macro. wich is

MOVE?CT macro Cin, Regout, Bitout
        CHK?RP  Regout
    if (((Cin) & 1) == 1)
        bsf     Regout, Bitout
    else
        bcf     Regout, Bitout
    endif
    endm

there you discover the extra cycle