mov  dptr,#CmdTable
  push acc
  movc a,@a+dptr
  mov  r0,a
  pop  acc
  inc  a
  movc a,@a+dptr
  mov  dph,a ;assuming endianness of your assembler
  mov  dpl,r0

CmdTable: dw COMMAND0,COMMAND1,COMMSND2