How to select PIC microcontroller memory bank 0 or 1

The data memory of the intermediate product PIC16C6X of PIC microcontroller is usually divided into two banks, namely, bank 0 (Bank0) and bank 1 (Bank1). Each bank is composed of two parts: dedicated registers and general registers. Some register units in the two banks are actually the same register units, but have different addresses. For example, the two addresses of the status register STATUS-Reg of the PIC16F84 introduced in this edition are 03H and 83H. The same is true for general registers. The composition
(i.e., function) of the data memory of different models of PIC microcontrollers is not exactly the same, so once the designer selects a certain model of PIC microcontroller, he often needs to find the data memory information of the microcontroller for programming.
The author takes the initialization of RB port (RB7, RB6...RB0) in the source program written by PIC16F84 in the MPLAB integrated development software environment as an example to explain the method of selecting storage bank 0 or 1 as follows:
Program list
file: PIC01.ASM
List P=16F84
#include P16F84.inc
STATUS EQU 03H
RB EQU 06H
TRISB EQU 86H
ORG 0x00; Reset vector (PIC16F84)
GOTO MAIN; Go to the beginning of the main program
ORG 0x08; Store the program from address 08H
MAIN
CLRF PORTB; Initialize
BSF STATUS, 5; Set RP0 to 1, select Bank1
; In order to set register TRISB
MOVLW 0x0F; Initialize data 00001111B
MOVWF TRISB; RB port D3~D0 is input;
… ; D7~D4 are outputs
The above example shows that the register TRISB in the source program is in the storage bank 1 (Bank1) of the 16F84 data memory, so the purpose of selecting TRISB is achieved by programming.