Solution 1:; ; INPUT: THE VALUES IN REGISTER B EN C ; OUTPUT: HL = B * C ; CHANGES: AF,DE,HL,B ; MUL: LD HL,0 LD A,B OR A RET Z LD D,0 LD E,C LOOP: ADD HL,DE DJNZ LOOP RET Solution 2: Très gourmand en mémoire , mets extremement rapide ; IN : A and D are to be multiplied ; OUT: HL is result ; CHANGES : AF,BC,E,HL ; ORG &1000 MUL: LD E,A SUB D LD H,MULTAB/256 LD L,A LD C,(HL) INC H LD B,(HL) LD A,E ADD A,D LD L,A LD E,(HL) DEC H LD L,(HL) LD H,E OR A SBC HL,BC RET ; MULTITAB dois avoir une adresse d'implémentaion ayant un poid ; faible nul ( &xx00 ) ORG &1300 MULTAB: DB 0, 0, 1, 2, 4, 6, 9, 12, 16, 20 DB 25, 30, 36, 42, 49, 56, 64, 72, 81, 90 DB 100, 110, 121, 132, 144, 156, 169, 182, 196, 210 DB 225, 240, 0, 16, 33, 50, 68, 86, 105, 124 DB 144, 164, 185, 206, 228, 250, 17, 40, 64, 88 DB 113, 138, 164, 190, 217, 244, 16, 44, 73, 102 DB 132, 162, 193, 224, 0, 32, 65, 98, 132, 166 DB 201, 236, 16, 52, 89, 126, 164, 202, 241, 24 DB 64, 104, 145, 186, 228, 14, 57, 100, 144, 188 DB 233, 22, 68, 114, 161, 208, 0, 48, 97, 146 DB 196, 246, 41, 92, 144, 196, 249, 46, 100, 154 DB 209, 8, 64, 120, 177, 234, 36, 94, 153, 212 DB 16, 76, 137, 198, 4, 66, 129, 192 DB 0, 192, 129, 66, 4, 198, 137, 76, 16, 212 DB 153, 94, 36, 234, 177, 120, 64, 8, 209, 154 DB 100, 46, 249, 196, 144, 92, 41, 246, 196, 146 DB 97, 48, 0, 208, 161, 114, 68, 22, 233, 188 DB 144, 100, 57, 14, 228, 186, 145, 104, 64, 24 DB 241, 202, 164, 126, 89, 52, 16, 236, 201, 166 DB 132, 98, 65, 32, 0, 224, 193, 162, 132, 102 DB 73, 44, 16, 244, 217, 190, 164, 138, 113, 88 DB 64, 40, 17, 250, 228, 206, 185, 164, 144, 124 DB 105, 86, 68, 50, 33, 16, 0, 240, 225, 210 DB 196, 182, 169, 156, 144, 132, 121, 110, 100, 90 DB 81, 72, 64, 56, 49, 42, 36, 30, 25, 20 DB 16, 12, 9, 6, 4, 2, 1, 0 DB 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 DB 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 DB 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 DB 0, 0, 1, 1, 1, 1, 1, 1, 1, 1 DB 1, 1, 1, 1, 1, 1, 2, 2, 2, 2 DB 2, 2, 2, 2, 2, 2, 3, 3, 3, 3 DB 3, 3, 3, 3, 4, 4, 4, 4, 4, 4 DB 4, 4, 5, 5, 5, 5, 5, 5, 5, 6 DB 6, 6, 6, 6, 6, 7, 7, 7, 7, 7 DB 7, 8, 8, 8, 8, 8, 9, 9, 9, 9 DB 9, 9, 10, 10, 10, 10, 10, 11, 11, 11 DB 11, 12, 12, 12, 12, 12, 13, 13, 13, 13 DB 14, 14, 14, 14, 15, 15, 15, 15 DB 16, 15, 15, 15, 15, 14, 14, 14, 14, 13 DB 13, 13, 13, 12, 12, 12, 12, 12, 11, 11 DB 11, 11, 10, 10, 10, 10, 10, 9, 9, 9 DB 9, 9, 9, 8, 8, 8, 8, 8, 7, 7 DB 7, 7, 7, 7, 6, 6, 6, 6, 6, 6 DB 5, 5, 5, 5, 5, 5, 5, 4, 4, 4 DB 4, 4, 4, 4, 4, 3, 3, 3, 3, 3 DB 3, 3, 3, 2, 2, 2, 2, 2, 2, 2 DB 2, 2, 2, 1, 1, 1, 1, 1, 1, 1 DB 1, 1, 1, 1, 1, 1, 1, 0, 0, 0 DB 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 DB 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 DB 0, 0, 0, 0, 0, 0, 0, 0https://CPCrulez.fr
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