PIC18 cheatsheet
ADDWFADDWFCANDWFCLRFCOMFCPFSEQCPFSGTCPFSLTDECFDECFSZDCFSNZINCFINCFSZINFSNZIORWFMOVFMOVFFMOVWFMULWFNEGFRLCFRLNCFRRCFRRNCFSETFSUBFWBSUBWFSUBWFBSWAPFTSTFSZXORWF
BCFBSFBTFSCBTFSSBTG
BCBNBNCBNNBNOVBNZBOVBRABZCALLCLRWDTDAWGOTONOPPOPPUSHRCALLRESETRETFIERETLWRETURNSLEEP
ADDLWANDLWIORLWLFSRMOVLBMOVLWMULLWRETLWSUBLWXORLW
TBLRD*TBLRD*+TBLRD*-TBLRD+*TBLWT*TBLWT*+TBLWT*-TBLWT+*

MOVLB

Detailed reference for the MOVLB instruction in PIC18 ISA.

Description

Move a 4‑bit literal value into the BSR (Bank Select Register) bits 3:0.

  • The literal must be in the range 0x0–0xF.
  • Only the low four bits of BSR are affected; the upper bits remain unchanged.
  • This instruction is used to switch the active bank for file register accesses.

Examples

; Load BSR with 0x0 (bank 0)
MOVLB 0x0 ; BSR<3:0> = 0x0
; Load BSR with 0x5 (bank 5)
MOVLB 0x5 ; BSR<3:0> = 0x5
; Load BSR with 0xF (bank 15)
MOVLB 0xF ; BSR<3:0> = 0xF
; Example: switch to bank 2 before accessing a register
MOVLB 0x2 ; switch to bank 2
MOVF 0x10, W ; read from register 0x10 in bank 2