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- In SIC/XE specification of instructions set, the location of the address of operand is given by the addressing modes of the instruction. Given the format 3 Instruction format below, extensively deduce all the possibleaddressing modesThis question assumes the machine architecture at the right. Note the stack pointer register, SP, is not part of the register file. SEL is a multiplexor used to select one of the inputs to the ALU. Assume memory addresses require only one memory cycle to fetch or store (unlike the 68000). MAR Register File (RO-RI5) MDR Show the machine code control IR constants sequence of an instruction that will set a block of from 1 to 127 memory locations to zero. The size of the block is in RO and the address of the block is in R1. Assume the instruction fetch sequence is the same as in Question 4 and start with the next step. R0 and R1 can change in the execution of the sequence. SEL PC SP ALU TEMP StatusDetermine the physical address of the source operand base on the Based Indexed Addressing Mode. The MOV instruction MOV AX, [BX].[1234] [SI] The contents of IP and CS are 0200, and 2AF2 respectively. PA is 32D24 which use to compute DS Also, the contents of BX and SI are 5252, and A620, respectively. Explain by the draw the registers and the logical of the system memory. Note: the content of PA is 95AB and the coding of this instruction is XXXX Activate Windows Go to Setting dal
- An instruction in address (021)16 in the simple machine has a mode bit I = 0, an operation code of theAND instruction, and an address part equal to (083)16. The memory word at address (083)16 contains theoperand (B8F2)16 and the content of the AC is (A937)16. Go over the fetch and execute cycles and determine thecontent of the following registers at the end of the execute cycle: PC, MAR, MBR, AC, and OPR. Repeat theproblem six more times starting with the operation code of another memory reference instruction with the initialvalues as defined earlier.is stored in the memory starting 2- The ISR address of interrupt number at address (0039CH). 3- In the instruction: (MOV AL,[3AFH]), data is transferred to 8086Mp over data clock cycles. lines: using 4- In the instruction: (MOVAX,[5BC2H]), data is transferred to 8086Mp over data lines: clock cycles. usingThe hexadecimal data 36AB4CFD4CA2 is located in the real mode memory within Little Endian format using a register indirect addressing mode. If the data index, DI, register contains the value 0004h and the data segment, DS, register contains the value 0001h. What will be the value stored into the 16-bit register, AX, after executing the mnemonic opcode/operand instruction MOV AX, [DI]? Use the figure below to solve this question. MOV AX, [DI] МЕMORY Data Address EAX EDI DS O a AX register is loaded with the data AB36. AX register is loaded with the data 36AB. Oc. AX register is loaded with the data AB9A. Od. AX register is loaded with the data BA36.
- An instruction at address 021 in the basic computer has I = 0, an operation code of the AND instruction, and an address part equal to 083 (all numbers are in hexadecimal). The memory word at address 083 contains the operand B8F2 and the content of AC is A937. Go over the instruction cycle and determine the contents of the following registers at the end of the execute phase: PC, AR, DR, AC, and IR. Repeat the problem six more times starting with an operation code of another memory-reference instruction. 5-10.In the following indexed addressing mode instruction, MOV 5(R1), LOC the effective address is А. EA = [R1] EA = 5+R1 C. EA = 5+[R1] D. EA= R1 B.12. In a BSL instruction block B3:10 holds the word 8ECOH, and the bit starting address is B3:0/15. What word is held in the B3:10 after one low-to-high transition signals are sent to this BSL instruction block's input?
- On a typical microprocessor, a distinct I/O address is used to refer to the I/O data reg- isters and a distinct address for the control and status registers in an I/O controller for a given device. Such registers are referred to as ports. In the Intel 8088, two I/O in- struction formats are used. In one format, the 8-bit opcode specifies an I/O operation; this is followed by an 8-bit port address. Other I/O opcodes imply that the port ad- dress is in the 16-bit DX register. How many ports can the 8088 address in each I/O addressing mode? .3. Let say BX = 1000H, SI = 2000H, DISP = 1234H, DS =1200H. %3D Determine the effective address of the Word that will be transferred to DX when executing this instruction: MOV DX,[BX+SI+1234]Suppose we have the instruction Load 100. Given memory and register R1 contain the decimal values below: Метory Address Content R1 200 100 500 300 700 500 900 700 100 900 300 Assuming R1 is implied in the indexed addressing mode, determine the actual value loaded into the accumulator and fill in the table below: Mode Immediate Value Loaded into AC Direct Indirect Indexed