The initial state after reset was:

all ports = 0FFh
PSW = 00h

So for using ports as inputs and using register bank 0 you need to do nothing. Simple use it.


If you really want to stop the µC forewer, execute this line:

jmp $

But I have never seen any practical program which do so.

Almost all programs execute the main loop again and again:

main:
; do something
jmp main
end

Then "end" statement tells only the assembler, that no further source code lines follows. Absolutely no code was generated on the "end" statement.


Peter