Explain why the max size of a memory segment in the real addressing mode is 64K.
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Explain why the max size of a memory segment in the real addressing mode is 64K.
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- If a microprocessor has a cycle time of 0.5 nanoseconds, what’s the processor clock rate? If the fetch cycle is 40% of the processor cycle time, what memory access speed is required to implement load operations with zero wait states and load operations with two wait states?A(n) __________ is a storage location implemented in the CPU.The time it takes to perform the fetch instruction and decode instruction steps is called the execution time. True or false?
- Register R1 (used for indexed addressing mode) contains the value: 0x200 Memory contains the values below (memory address -> contents) : 0x100 -> 0x600 ... 0x400 -> 0x300 ... 0x500 -> 0x100 ... 0x600 -> 0x500 ... 0x700 -> 0x800 When the instruction "Load 0x500" is executed, the value loaded into the AC is when using immediate addressing, it is when using direct addressing, it is when using indirect addressing, and when using indexed addressing.REAL MODE MEMORY ADDRESSING In the real mode, show the starting and ending address of the segment located by the following segment register values (in hex): a) SR= DC28 b) SR=FA91REAL MODE MEMORY ADDRESSING Find the memory location addressed by the microprocessor, when operated in the real mode, for the following segment register and 80286 register combinations: a) DS=8EBC & DX=A3D7 b) CS=DCAF & IP=FAC8
- ISA of a hypothetical CPU 1 Address Memory: Address Data - (8-bits) LOAD M 100 25 STORE M 101 90 ADD M 102 65 SUB M 103 36 MUL M 104 22 105 77 DIV M 106 89 Where: Note: all numbers are hexadecimal M-a memory address AC - accumulator Sample program: //line 1 /line 2 //line 3 //line 4 //line 5 //line 6 LOAD 100 ADD 101 STORE 106 LOAD 102 SUB 103 STORE 105 Answer the following questions based on the given information above. 1. What is the content of memory location 106 after executing line 3? 2. What is the content of memory location 105 after executing line 6? 3. Write a program segment that will multiply the content of memory location 105 with the content of AC and store the result at memory location 100. а. b. 4. For this CPU, what is the width of the program counter? (express answer in terms of bits, do not include the word "bits" in your answer)A certain computer has a memory of 1M words, and each word is 32 bits long. Each instruction is 32 bits long and is consisted of an opcode field, a register address field to specify one of 32 registers, and a memory address field. How large must the register field be? How large must the address field be? How many different opcodes can be supported by this format? Show your reasoningThe memory unit of a computer has 2M words of 32 bits each. The computer has an instruction format with 4 fields: an opcode field; a mode field to specify 1 of 4 addressing modes; a register address field to specify one of 9 registers; and a memory address field. Assume an instruction is 32 bits long. Answer the following: a) How large must the mode field be?
