try them in bank6
and just remove the banksel 0 at the end


i added a rotate left to and a few tweaks

Code:
'****************************************************************'*  Name    : UNTITLED.BAS                                      *
'*  Author  : richard                                           *
'*  Notice  : Copyright (c) 2022 caveat emptor                  *
'*          : All Rights Reserved                               *
'*  Date    : 11/10/2022                                        *
'*  Version : 1.0                                               *
'*  Notes   :                                                   *
'*          : pic18f26k22                                                  *
'****************************************************************
#CONFIG
  CONFIG  FOSC = INTIO67
  CONFIG  PLLCFG = ON
  CONFIG  PRICLKEN = ON
  CONFIG  FCMEN = OFF
  CONFIG  IESO = OFF
  CONFIG  PWRTEN = ON
  CONFIG  BOREN = SBORDIS
  CONFIG  BORV = 190
  CONFIG  WDTEN = OFF
  CONFIG  WDTPS = 32768
  CONFIG  CCP2MX = PORTC1
  CONFIG  PBADEN = OFF
  CONFIG  CCP3MX = PORTB5
  CONFIG  T3CMX = PORTC0
  CONFIG  HFOFST = ON
  CONFIG  P2BMX = PORTB5
  CONFIG  MCLRE = EXTMCLR
  CONFIG  STVREN = ON
  CONFIG  LVP = OFF
  CONFIG  XINST = OFF
  CONFIG  DEBUG = OFF
  CONFIG  CP0 = OFF
  CONFIG  CP1 = OFF
  CONFIG  CP2 = OFF
  CONFIG  CP3 = OFF
  CONFIG  CPB = OFF
  CONFIG  CPD = OFF
  CONFIG  WRT0 = OFF
  CONFIG  WRT1 = OFF
  CONFIG  WRT2 = OFF
  CONFIG  WRT3 = OFF
  CONFIG  WRTC = OFF
  CONFIG  WRTB = OFF
  CONFIG  WRTD = OFF
  CONFIG  EBTR0 = OFF
  CONFIG  EBTR1 = OFF
  CONFIG  EBTR2 = OFF
  CONFIG  EBTR3 = OFF
  CONFIG  EBTRB = OFF
#ENDCONFIG
    


    NumberOfDisplays  CON 36
    NumberOfRows  CON 10
    DEFINE OSC 64
    DEFINE DEBUG_REG PORTB
    DEFINE DEBUG_BIT 7
    DEFINE DEBUG_BAUD 9600
    DEFINE DEBUG_MODE 0
    LATB.7=1
    bcnt       VAR BYTE   bank0
    dcnt       VAR BYTE   bank0
    BUFF       VAR BYTE[32]
    iteration  VAR word 
    OSCCON=$70
    OSCTUNE.6=1
    while ! osccon2.7 :WEND    ;wait for pll
    ANSELB=0
    ANSELC=0
    ANSELA=0 
    dspbuff var byte[380]
    clear
    trisc = %01111111 
    TRISB = %01111111
    TRISA = %11111111
    pause 1000
    debug 13,10,"ready",13,10
    LATc.7=0
    ;38x8 bits wide 10 bits high


main:
    iteration=0
    dspbuff[379]=3
    dspbuff[37]=3
    WHILE  iteration<610
        LATc.7=1
        gosub rotate_l
        LATc.7=0
        debug 13,10,dec iteration
        debug 13,10,bin8 dspbuff[379]," " ,bin8 dspbuff[378]," " ,bin8 dspbuff[343] ," ",bin8 dspbuff[342] 
        debug 13,10,bin8 dspbuff[37] ," " ,bin8 dspbuff[36] ," " ,bin8 dspbuff[1]   ," ",bin8 dspbuff[0] 
        pause 50
        iteration=iteration+1 
    WEND
    iteration=0
    dspbuff[379]=$c0
    dspbuff[37]=$c0
    WHILE  iteration<610
        LATc.7=1
        gosub rotate_R
        LATc.7=0
        debug 13,10,dec iteration
        debug 13,10,bin8 dspbuff[379]," " ,bin8 dspbuff[378]," " ,bin8 dspbuff[343] ," ",bin8 dspbuff[342] 
        debug 13,10,bin8 dspbuff[37] ," " ,bin8 dspbuff[36] ," " ,bin8 dspbuff[1]   ," ",bin8 dspbuff[0] 
        pause 50
        iteration=iteration+1 
    WEND
goto main    
    
    
    
    
rotate_r:  ' pic18
asm
    banksel _bcnt  ;ROW
    movlw   _NumberOfRows    ;10 rows  
    movwf   _bcnt
    movlw   high (_dspbuff)  ;BOTTOM OF BUFFER
    movwf   FSR0H    
    movlw   low  (_dspbuff)
    movwf   FSR0L
    movlw   low((_NumberOfDisplays + 2)*_NumberOfRows-1) ;TOP OF BUFFER
    ADDWF   FSR0L 
    movlw   high((_NumberOfDisplays + 2)*_NumberOfRows-1)    
    ADDWFC  FSR0H
    MOVLW   _NumberOfDisplays + 2;36 displays + 2 outside of display 
RROW  
    movwf   _dcnt        ;display
    bcf     STATUS, C
Rcol
    rrcf    POSTDEC0 ,f  ;PER display
    DECFSZ  _dcnt ,F
    BRA     Rcol
    BNC     RBNC
    bsf     PLUSW0,7     ;max displays would be 127 to use plusw
RBNC 
    DECFSZ  _bcnt ,F
    BRA     RROW
    banksel 0
    return
endasm
 rotate_l:  ' pic18
asm
    banksel _bcnt              ;ROW
    movlw   _NumberOfRows 
    movwf   _bcnt
    movlw   high (_dspbuff)    ;BOTTOM OF BUFFER
    movwf   FSR0H    
    movlw   low  (_dspbuff)
    movwf   FSR0L
LROW
    MOVLW   _NumberOfDisplays + 2;36 displays + 2 outside of display 
    movwf   _dcnt         ;display
    comf    WREG
    incf    WREG
    bcf     STATUS, C
Lcol
    rlcf    POSTINC0 ,f   ;PER display
    DECFSZ  _dcnt ,F
    BRA     Lcol
    BNC     LBNC
    bsf     PLUSW0,0       ;max displays would be 127 to use plusw
LBNC 
    DECFSZ  _bcnt ,F
    BRA     LROW
    banksel 0
    return
endasm