[Solved]Q3 120 Marks Digital Computer Memory Unit Shown Fig1 B Capacity 16 384 Words 40 Bits Per W Q37037968

Q3) 120 marks] A digital computer has a memory unit as shown in Fig.1(b) with a capacity of 16,384 words, 40 bits per word. The instruction code format consists of six bits for the operation part and 14 bits for the address part (no indirect mode bit). Two ins the control unit. tructions are packed in one memory word, and a 20-bit instruction register IR is available in 31 SUB 890 SIP 500 symbol Symbolic designation Description in words Subtract AC from memory 32 SIP If MEA] is +ve then PC PC +2 If memory is positive, then increment PC twice 500 50 Fig. 1(a) 890 60 Fig. 1(b) 1) Write the RTL of fetch and execute instructions at address 3 11) Go over the instruction cycle and determine the contents of the following registers, PC, AR, IR, DR and AC to execute the instructions at address 31 in Fig.I(b). Assume the initial value for AC is 20. All the numbers are in decimal. The description of the instructions stored in memory in Fig. 1(b) is shown in Fig. 1(a). Show transcribed image text Q3) 120 marks] A digital computer has a memory unit as shown in Fig.1(b) with a capacity of 16,384 words, 40 bits per word. The instruction code format consists of six bits for the operation part and 14 bits for the address part (no indirect mode bit). Two ins the control unit. tructions are packed in one memory word, and a 20-bit instruction register IR is available in 31 SUB 890 SIP 500 symbol Symbolic designation Description in words Subtract AC from memory 32 SIP If MEA] is +ve then PC PC +2 If memory is positive, then increment PC twice 500 50 Fig. 1(a) 890 60 Fig. 1(b) 1) Write the RTL of fetch and execute instructions at address 3 11) Go over the instruction cycle and determine the contents of the following registers, PC, AR, IR, DR and AC to execute the instructions at address 31 in Fig.I(b). Assume the initial value for AC is 20. All the numbers are in decimal. The description of the instructions stored in memory in Fig. 1(b) is shown in Fig. 1(a).

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Answer to Q3) 120 marks] A digital computer has a memory unit as shown in Fig.1(b) with a capacity of 16,384 words, 40 bits per wo… . . .