Reference Chart for BANK System on Commodore C128 Computer

 Configuration  #                          Value for Configuration Register 
                     

 0  RAM 0 only                                                    $3F %00111111
 1  RAM 1 only                                                    $7F %01111111
 2  RAM 2 (Ram 0) only                                            $BF %10111111
 3  RAM 3 (Ram 1) only                                            $FF %11111111
                                  
 4  RAM 0 only             Int ROM      I/O                       $16 %00010110
 5  RAM 1 only             Int ROM      I/O                       $56 %01010110
 6  RAM 2 (Ram 0) only     Int ROM      I/O                       $96 %10010110
 7  RAM 3 (Ram 1) only     Int ROM      I/O                       $D6 %11000110
                                                                           
 8  RAM 0 only             Ext ROM      I/O                       $2A %00101010
 9  RAM 1 only             Ext ROM      I/O                       $6A %01101010
 A  RAM 2 (Ram 0) only     Ext ROM      I/O                       $AA %10101010
 B  RAM 3 (Ram 1) only     Ext ROM      I/O                       $EA %11101010
                                                                            
 C  RAM 0                  Int ROM(lo)  I/O    KERNAL             $06 %00000110
 D  RAM 0                  Ext ROM(lo)  I/O    KERNAL             $0A %00001010
                                                                             
 E  RAM 0                             CharROM  KERNAL    BASIC    $01 %00000001
 F  RAM 0                               I/O    KERNAL    BASIC    $00 %00000000


The configuration number shown here as HEXidecimal represents the number that 
would be used in the BASIC 'BANK n' statement where n is a decimal number ie.

    'BANK 12 : SYS 6656'   ; used in the C128 DOS Shell as "F1"

Rather than actually selecting Bank 12 the system uses the preset 
configuration #12. Configuration #12 has RAM 0, CharRom, KERNAL & BASIC ROMs 
mapped into the system.  In this way the 'BANK' statement is misleading.