Aquí tienes tu ejemplo, es una parte de mi código del servidor web, en concreto esta tabla es un flash.
Debes tener dos registros llamados OFFSET_H y OFFSET_L donde, antes de llamar a leetabla con un call, deberás poner la posición dentro de la tabla que quieres leer.
Codigo:
leetabla
movlw HIGH(tabla) ;Carga en W el valor del PCLATH al inicio de la tabla
addwf OFFSET_H,W ;Suma HIGH(tabla) y OFFSET_H
movwf PCLATH ;y el resultado se carga en el PCLATH
movlw LOW(tabla) ;Carga en W el valor del PCL al inicio de la tabla
addwf OFFSET_L,W ;Suma LOW(tabla) y OFFSET_F en W
btfsc STATUS,C ;Si existe acarreo
incf PCLATH,f ;Sumamos 1 al PCLATH
movwf PCL ;cargamos el PCL con la posición a leer de la tabla que estaba en W
tabla
dt 0x43,0x57,0x53,0x7,0x81,0x2,0x0,0x0,0x78,0x9C,0x5D,0x91,0x4D,0x68,0x13,0x51
dt 0x14,0x85,0xCF,0xBC,0xF7,0x66,0xE6,0x55,0x13,0x42,0xAB,0x10,0x91,0x6,0x44,0x89
dt 0xA8,0x88,0x50,0xD,0xE8,0xA2,0x92,0xA1,0x15,0x53,0xA4,0x26,0x12,0x45,0xD1,0x4D
dt 0x18,0x33,0x83,0x54,0xC6,0x4C,0xC8,0x54,0x48,0x5,0xB3,0x10,0xB5,0x82,0x50,0x5D
dt 0xC8,0xF8,0x83,0x4A,0x40,0xAC,0x2E,0x14,0x4,0x37,0x16,0x84,0xAC,0xC4,0x9F,0x8D
dt 0xA0,0x4B,0xF1,0x67,0x61,0x95,0x42,0x74,0x21,0x74,0x27,0x8C,0xF7,0x8D,0x4D,0x11
dt 0x67,0x71,0x79,0xEF,0xBB,0xF7,0x9C,0x7B,0x86,0xD7,0x84,0x5E,0x1,0x52,0x6D,0x20
dt 0xA1,0x61,0x94,0x45,0x51,0x94,0xE7,0x15,0xD,0xB8,0x54,0x45,0x2,0x55,0xBB,0x71
dt 0xC2,0xC6,0xB8,0x6F,0x3B,0x87,0xED,0x46,0x0,0xBF,0xA6,0x8E,0x70,0xBD,0xAA,0xEF
dt 0xF9,0xD,0x8C,0x1C,0x2A,0xA2,0x52,0xB3,0x4F,0xB9,0x18,0x8D,0xEF,0x81,0x3B,0x59
dt 0x2E,0x8C,0xD0,0x54,0xD9,0xF5,0x5C,0x3B,0x70,0x51,0xF7,0xEC,0x9A,0xBF,0xCD,0xE
dt 0xEA,0xF9,0xFA,0x69,0x2F,0xB0,0x1D,0x7F,0x37,0x3C,0x65,0xB0,0xCC,0x11,0x26,0x21
dt 0x61,0x60,0xE9,0x93,0x9A,0x35,0x1C,0x32,0x22,0x83,0xAA,0xB2,0x99,0x14,0xA0,0x41
dt 0x9F,0x80,0x70,0x9B,0x13,0x93,0x3E,0x9E,0x82,0xB0,0x10,0x3,0x77,0x18,0x1E,0x22
dt 0xD4,0x61,0x52,0x4C,0x4C,0x6B,0xE0,0xE9,0xD0,0x84,0xE0,0xA6,0x4E,0xD7,0x31,0xD5
dt 0xBD,0x80,0x50,0x42,0x72,0xC1,0xA4,0x10,0xBC,0x50,0x54,0x66,0x7A,0x91,0x66,0x62
dt 0x81,0x34,0xAC,0x4C,0x68,0x40,0x68,0x4B,0xCD,0x1E,0xE6,0xF1,0x52,0xB3,0x9C,0x56
dt 0xCD,0x7F,0x94,0x72,0x46,0xAA,0x6C,0x6C,0x33,0x32,0xA0,0x96,0xEC,0x23,0xA5,0x5E
dt 0x2C,0x2C,0xEB,0xFE,0x86,0x5D,0x51,0x4E,0x97,0x54,0x3A,0x7E,0x20,0xE,0x74,0x93
dt 0xE1,0x64,0x44,0x5,0x28,0x85,0x7D,0x90,0x2B,0xFF,0x1B,0x35,0xD1,0x41,0xE,0xEA
dt 0xEF,0x9A,0x96,0xF3,0x69,0x5D,0xEE,0xED,0x4E,0x3A,0xAF,0x56,0x6B,0xB4,0xEC,0xC2
dt 0xDC,0xCB,0x3D,0xBF,0xB7,0xBA,0x3F,0x5A,0x9F,0x9D,0xA1,0xE1,0xE3,0x53,0xDD,0xA9
dt 0xEF,0xE7,0x82,0xB3,0x8F,0x1F,0xE9,0xAF,0x67,0x33,0xAB,0x3E,0x64,0x2D,0x5C,0x34
dt 0xC,0x8D,0x84,0xE4,0x50,0x52,0xB1,0x70,0xA4,0x7B,0xA5,0xF5,0xAA,0xAD,0x21,0x8A
dt 0x2D,0xA8,0xF6,0x67,0x37,0xD5,0xCD,0xFE,0x37,0x5F,0xD9,0xF9,0x5F,0xB3,0x63,0xC9
dt 0x1B,0xB7,0xAF,0x5F,0xE3,0x67,0x16,0xE6,0x9F,0xDC,0xDD,0x95,0xD8,0xB7,0xFE,0x68
dt 0xBE,0x7B,0x2C,0x7C,0x71,0x75,0xA0,0xE1,0x8C,0xB7,0xBF,0xDD,0x9F,0xDB,0x72,0x79
dt 0x7F,0xD4,0xED,0xD4,0x36,0x14,0x2C,0xBE,0xF8,0x6C,0xFA,0xE3,0x5E,0x74,0x64,0x92
dt 0x4C,0xB9,0x4A,0x92,0x62,0x6A,0x8B,0x40,0xC7,0xA0,0x67,0xC0,0x46,0x46,0x74,0xED
dt 0x83,0x7B,0x8B,0xEA,0xD5,0x87,0x7A,0x50,0x10,0x1C,0x3C,0xF8,0xEE,0xBD,0x45,0x70
dt 0x47,0xF,0x1A,0xA,0xCE,0xAF,0xF9,0xF9,0x85,0xE0,0xF6,0x1E,0x94,0xA,0x3E,0xBF
dt 0xD5,0x52,0x30,0x7,0x8B,0xD0,0x1F,0x41,0xBB,0x92,0x9F