Here, the highest 6 bits of the address are given by :
1010 01
The remaining bits can span the entire range, with each bit taking a 0 or 1.
Thus,
which is equivalent to the hex range :
0xA4000000 - 0xA7FFFFFF
Question 4. A computer with a 32-bit address bus uses a logic circuit to select a...
Design a computer system with an 8-bit address bus, an 8-bit data bus and it uses isolated I/O. It has: 1128 bytes of PROM starting at address 00H (H meaning in hexadecimal) constructed usin ( one 64x8 chip and multiple 32x2 chips; g (2) 96 bytes of RAM constructed 32x4 chips; (3) an output device with a READY signal at address ABH; (4) an input device with a READY signal at address CDH; (5) a bidirectional input/output device with a...
A computer system has a 20-bit address bus and can address an 8-bit wide memory. The memory of this computer system contains 64 Kbytes of ROM and 256 Kbytes of RAM. The ROM and RAM form a contiguous block of memory starting at address 0. What is the maximum number of addressable memory locations can this computer system address? Give your answer in power of 2. Draw a memory map for the computer system. Indicate the starting and ending addresses...
Given a computer with 16-bit data bus and 20-bit address bus,
what is the maximum memory capacity? Design the memory using the
128k × 8 memory chip shown below.
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Consider the following hypothetical microprocessor. Assume this processor uses a 32-bit address and 32-bit data bus. Consider a 4-bit I/O port number. How many 16-bit I/O ports can be supported?
Q2. (4 pts) A certain microprocessor (uP) has a 37-bit address bus and a 32-bit wide data bus. Here, similar to Q1, we are using byte packing, that is, we should be able to access each byte in the memory. Assume that you are using a memory chips organized as 128K by 8 bits. Q2-1.Divide the 37-bit address lines into page number bits, offset bits and byte address bits. Q2-2.How many 128K by 8 memory devices would you need to...
A 64-bit word computer employs a 128KB cache. The address bus in this system is 32-bits. Determine the number of bits in each field of the memory address register (MAR) as seen by cache in the following organizations (show your calculations): a. Fully associative mapping with line size of 1 word. b. Fully associative mapping with line size of 4 words c. Direct mapping with the line size of 1 word. d. Direct mapping with the line size of 8...
A computer with a 24‐bit address bus has a main memory of size 16 MB and a cache size of 64 KB. The word length is two bytes. a. What is the address format for a direct mapped cache with a line size of 32 words? b. What is the address format for a fully associative cache with a line size of 32 words? c. What is the address format for a 4‐way set associative cache with a line size...
The handheld in previous question uses a microcontroller with a 12‐bit address bus. The memory chips selected have a size of 4K×4 bits. If the handheld device is to have a maximum amount of addressable memory, how many memory chips are required per device?
Question 20 5 pts Suppose a computer has 32-bit instructions. The instruction set consists of 64 different operations. All instructions have an opcode and two address fields (allowing for two addresses). The first of these addresses must be a register direct address, and the second must be a memory address. Expanding opcodes are not used. The machine has 16 registers. What's the size of the largest memory space that can be addressed by this computer?Assume byte addressable memory.
Suppose that we have a computer system using 32-bit logical address and 46–bit physical address. It also uses paging for memory management with a single-level page table organization. The page size is 4K bytes and each page table entry is 32 bits or 4 bytes in size. Calculate the number of bits in each field in the logical address, the size in bytes of the page table, and the number of frames.