S3S2*S1*S0M*C0 CPET DM 1->ST[SR*] 1->DT[SR.DR*] 1->ET[SR.DR] ST0 R0->A[IR5*IR4*] CPMAR R1->A[IR5*IR4] CPR0[IR5*IR4*] PC->A[IR5.IR4] CPR1[IR5*IR4] DM CPT[P*] T+1 ST1 EMAR CPPC R CPT[P*] SMBR CPST MBR->B CPDT S3S2*S1S0*M CPET DM 1->DT[DR*] 1->ET[DR] DT0 R0->A[IR2*IR1*] CPMAR R1->A[IR2*IR1] CPR0[IR2*IR1*] PC->A[IR2.IR1] CPR1[IR2*IR1] DM CPT[P*] 1->ET ET0 R0->A[IR5*IR4*] CPPC R1->A[IR5*IR4] CPR0[IR5*IR4*] PC->A[IR5.IR4] CPR1[IR5*IR4] C->A[SR*] CPMBR[DR*] CPT[P*] Y=A DM T+1 ET1 EMAR[DR*] CPT[P*] W[DR*] CPMAR T+1
ET2 PC->A CPST Y=A CPDT DM CPET 1->FT CPT ADD\\SUB双操作指令 FT0 EMAR CPPC R CPT[P*] SIR CPFT PA->A CPDT S3S2*S1*S0M*C0 CPET DM 1->ST[SR*] 1->DT[SR.DR*] 1->ET[SR.DR] ST0 R0->A[IR5*IR4*] CPMAR R1->A[IR5*IR4] CPR0[IR5*IR4*] PC->A[IR5.IR4] CPR1[IR5*IR4] DM CPT[P*] T+1 ST1 EMAR CPPC R CPT[P*] SMBR CPST MBR->B CPDT S3S2*S1S0*M CPET DM 1->DT[DR*] 1->ET[DR] DT0 R0->A[IR2*IR1*] CPMAR R1->A[IR2*IR1] CPR0[IR2*IR1*] PC->A[IR2.IR1] CPR1[IR2*IR1] DM CPT[P*] T+1
DT1 EMAR CPD SMBR CPST MBR->B CPDT S3S2*S1S0*M CPET DM CPT 1->ET ET0 R0->A[IR5*IR4*] CPMAR R1->A[IR5*IR4] CPR0 PC->A[IR5.IR4] CPR1 R0->B[IR2*IR1*] CPC R1->B[IR2*IR1] CPD PC->B[IR2.IR1] CPMBR C->A[SR*] D->B[DR*] Y=A+B\\A-B DM T+1 ET1 EMAR[DR*] W[DR*] CPT[P*] CPMAR T+1 ET2 PC->A CPST DM CPDT 1->FT CPET CPT COM单操作数 FT0 EMAR CPPC R CPT[P*] SIR CPFT PA->A CPDT S3S2*S1*S0M*C0 CPET DM
1->ST[SR*] 1->DT[SR.DR*] 1->ET[SR.DR] DT0 R0->A[IR2*IR1*] CPMAR R1->A[IR2*IR1] CPR0[IR2*IR1*] PC->A[IR2.IR1] CPR1[IR2*IR1] DM CPT[P*] T+1 DT1 EMAR CPD SMBR CPST MBR->B CPDT S3S2*S1S0*M CPET DM CPT 1->ET ET0 R0->A[IR2*IR1*] CPMAR R1->A[IR2*IR1] CPR0[IR2*IR1*] PC->A[IR2.IR1] CPR1[IR2*IR1] D->A[DR*] Y=A* DM T+1 ET1 EMAR[DR*] W[DR*] CPT[P*] CPMAR T+1 ET2 PC->A CPST DM CPDT 1->FT CPET CPT
4.7微指令码 取指 微地址 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 操作 M->IR PC+1->PC 微代码 000 000 00000 00 00 100 110 0 00 0000 100 000 11110 01 00 111 000 0 00 0000 000 000 00000 00 00 000 000 0 00 0010 0010 0101 0000000000000 0 00 0111 0010 1001 0000000000000 0 00 0111 按OP·DR分支，SC=0011 010 000 11111 00 00 110 000 0 00 0000 000 000 00000 00 00 000 101 0 00 0000 100 000 11111 00 00101 000 0 00 0000 0000 0000 0000000000000 0 00 0001 010 000 11111 00 00 001 000 0 00 0000 0000 1000 00000 00 000 000 0 00 0001 0010 0101 0000000000000 0 00 0111 0010 1001 0000000000000 0 00 0111 000 100 10101 00 00 011 110 0 00 0000 按OP·DR分支，SC=0011 010 011 10010 10 00 110 000 0 00 0000 0000 0111 0000000000000 0 00 0001 010 001 10010 10 00 001 000 0 00 0000 0000 1000 0000000000000 0 00 0001 010 011 01100 01 00 110 000 0 00 0000 0000 0111 0000000000000 0 00 0001 010 001 01100 01 00 001 000 0 00 0000 0000 1000 0000000000000 0 00 0001 0010 1001 0000000000000 0 00 0111 000 100 10101 00 00 011 110 0 00 0000 按OP·DR分支，SC=0011 011 000 00001 00 00 110 000 0 00 0000 0000 0111 0000000000000 0 00 0001 001 000 00001 00 00 001 000 0 00 0000 0000 1000 0000000000000 0 00 0001 按源寻址方式分支，SC=0101 001 000 11111 00 00 010 000 0 00 1000 001 000 11111 00 00 101 000 0 00 0000 000 100 10101 00 00 010 110 0 00 1000 按目的寻址方式分支，SC=0110 0000 0000 0000000000000 0 00 1000 000 001 11111 00 00 101 000 0 00 1000
MOV MOV·DR▔ MOV·DR 双操作数 C->MBR MBR->M PC->MAR C->R(j) M->MBR->D C+D->MBR C+R(j)->R(j) C-D->MBR C-R(j)->R(j) M->MBR->D D▔->MBR R(i)▔->R(i) R(i)->C R(i)->MAR M->MBR->C R(j)->MAR ADD·DR▔ ADD·DR SUB·DR▔ SUB·DR 单操作数 COM·DR▔ COM·DR 取源操作数 R (R) 取目的地 R (R)
八位模型机设计 - 图文
