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Assignment ITC544 Computer Organization and Architecture

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Charles Sturt University

   

IT Fundamentals (ITC544)

   

Added on  2020-04-07

Assignment ITC544 Computer Organization and Architecture

   

Charles Sturt University

   

IT Fundamentals (ITC544)

   Added on 2020-04-07

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Page 1 of 6Running head: MARIE AND ISAASSIGNMENT 2: MARIE & ISASUBJECT CODE: ITC544NAMESTUDENT ID
Assignment ITC544 Computer Organization and Architecture_1
MARIE AND ISA Page 2 of 6Question 1 RAM chips of capacity 1024 K *32are used to build a memory of 256M * 128 capacity. From this information, it is possible to determine the number of RAM chips necessary to build the memory, the RAM chips required per memory word, number of address bits neededby each RAM chip, banks in the memory and the address bits required for the whole memory.a)Number of RAM chips = ¿memory¿RAMchip(256∗1024K∗128)(1024K∗32)= 1024 chipsb)RAM chips required per memory word = memorywordwidthRAMchipwidth12832= 4 chipsc)The length of the RAM chip represents the number of address bits.1024 * 1024 = 1048576 ¿¿ = 20 address bitsd)Memory banks = RAMchipsRAMchipspermemoryword10244= 256 bankse)The memory requires the following address bits:log(256∗¿10242)log2¿ = 28 address bitsQuestion 2
Assignment ITC544 Computer Organization and Architecture_2
MARIE AND ISA Page 3 of 6A digital computer with a memory unit of 48 bits per word has an instruction set containing 240 different operations. All instructions have an operation code and an address part and eachinstruction is stored in one word of memory.a)The operation code will have the following number of bits:log240log2 = 7.9Bits cannot be in decimal hence the operation code needs 8 bits.b)Three bits are needed to specify the register. The address part of instruction will havethe following bits: 8 + 3 = 11 (bits required for opcode and specifying register)The remaining bits are therefore:48 - 11 = 37 (bits for address part)c)The largest unsigned binary number to be accommodated in one word of memory is given as:248 - 1
Assignment ITC544 Computer Organization and Architecture_3

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