请教一下用0832产生正弦波的算法是什么

下面这个是使用DAC0832输出正弦波的汇编程序,那个正弦波的表格是怎么算出来的,请多多指教,谢谢!
PORT EQU 0CFB0H
     ORG 0000H
     SJMP START
     ORG 0030H
SIN:MOV R7,#00H
DADO:MOV A,R7
     MOV DPTR,#TAB
     MOVC A,@A+DPTR
     MOV DPTR,#PORT
     MOVX @DPTR,A
     INC R7
     SJMP DADO
TABB 80H,83H,86H,89H,8DH,90H,93H,96H
    DB 99H,9CH,9FH,0A2H,0A5H,0A8H,0ABH,0AEH
    DB 0B1H,0B4H,0B7H,0BAH,0BCH,0BFH,0C2H,0C5H
    DB 0C7H,0CAH,0CCH,0CFH,0D1H, 0D4H,0D6H,0D8H
    DB 0DAH,0DDH,0DFH,0E1H,0E3H, 0E5H,0E7H,0E9H
    DB 0EAH,0ECH,0EEH,0EFH,0F1H, 0F2H,0F4H,0F5H
    DB 0F6H,0F7H,0F8H,0F9H,0FAH, 0FBH,0FCH,0FDH
    DB 0FDH,0FEH,0FFH,0FFH,0FFH, 0FFH,0FFH,0FFH
    DB 0FFH,0FFH,0FFH,0FFH,0FFH, 0FFH,0FEH,0FDH
    DB 0FDH,0FCH,0FBH,0FAH,0F9H, 0F8H,0F7H,0F6H
    DB 0F5H,0F4H,0F2H,0F1H,0EFH, 0EEH,0ECH,0EAH
    DB 0E9H,0E7H,0E5H,0E3H,0E1H, 0DEH,0DDH,0DAH
    DB 0D8H,0D6H,0D4H,0D1H,0CFH, 0CCH,0CAH,0C7H
    DB 0C5H,0C2H,0BFH,0BCH,0BAH, 0B7H,0B4H,0B1H
    DB 0AEH,0ABH,0A8H,0A5H,0A2H, 9FH, 9CH, 99H
    DB 96H, 93H, 90H, 8DH, 89H, 86H, 83H, 80H
    DB 80H, 7CH, 79H, 78H, 72H, 6FH, 6CH, 69H
    DB 66H, 63H, 60H, 5DH, 5AH, 57H, 55H, 51H
    DB 4EH, 4CH, 48H, 45H, 43H, 40H, 3DH, 3AH
    DB 38H, 35H, 33H, 30H, 2EH, 2BH, 29H, 27H
    DB 25H, 22H, 20H, 1EH, 1CH, 1AH, 18H, 16H
    DB 15H, 13H, 11H, 10H, 0EH, 0DH, 0BH, 0AH
    DB 09H, 08H, 07H, 06H, 05H, 04H, 03H, 02H
    DB 02H, 01H, 00H, 00H, 00H, 00H, 00H, 00H
    DB 00H, 00H, 00H, 00H, 00H, 00H, 01H, 02H
    DB 02H, 03H, 04H, 05H, 06H, 07H, 08H, 09H
    DB 0AH, 0BH, 0DH, 0EH, 10H, 11H, 13H, 15H
    DB 16H, 18H, 1AH, 1CH, 1EH, 20H, 22H, 25H
    DB 27H, 29H, 2BH, 2EH, 30H, 33H, 35H, 38H
    DB 3AH, 3DH, 40H, 43H, 45H, 48H, 4CH, 4EH
    DB 51H, 55H, 57H, 5AH, 5DH, 60H, 63H, 66H
    DB 69H, 6CH, 6FH, 72H, 76H, 79H, 7CH, 80H
END