Are 4 Suppose We Have A 16 Bit Cpu With 8 Regular Registers And Their Current Values Ro 0x0002 R1 0x0000 R2 0x 1101 1 (31.57 KiB) Viewed 43 times
Are 4 Suppose We Have A 16 Bit Cpu With 8 Regular Registers And Their Current Values Ro 0x0002 R1 0x0000 R2 0x 1101 2 (45.49 KiB) Viewed 43 times
are: 4. Suppose we have a 16-bit CPU, with 8 regular registers, and their current values RO=0x0002 R1=0x0000 R2=0x 1101 R3=0x0009 R4=0x0001 R5=0x0002 R6=0x0000 R7=Ox 0009 PC=0x1008 Also, the following cells represent some parts of the memory, where each cell contains one byte, and the addresses are labeled on the right side. Eg the value in address Ox1000 is: 0101 1010. Here the address is in hexadecimal format DIO 1010 cade 1000 10000010 0100 0101 1000 1001 0000 0010 addox 100 addr:1009 tar OxIOOA -addr: autoon Based on von Neuman model, answer the following questions. 1) Currently PC (program counter) register value is Ox 1008, what is the meaning of this number? 2) what is the data that CPU is going to fetch? 3) By default, what is the PC value after the current cycle? 4) What is the data CPU is going to fetch in the next cycle?
1. Using 256 Byte RAM chips to provide 4096-byte memory a) How many chips are needed? b) How many bits will each address contain? c) How many bits must be used select a chip? 2. Suppose 2M memory space in a 16-bit system, using 256K Byte RAM chips and memory is byte-addressable (I word=16bits). a) How many RAM chips are necessary? b) How many address bits at least are needed for each RAM chip? c) How many address bits at least are needed for all of memory? d) If high-order interleaving is used, where would be the address Ox 1C located? e) Repeat d) for low-order interleaving. 3. Assuming a 16M memory for a 16-bits system, using 512K Byte RAM chips. a) How many RAM chips are necessary? b) If we were accessing one full word, how many chips would be involved? c) How many address bits are needed for each RAM chip? d) How many address bits are needed for all of memory? e) If high-order interleaving is used, where would be the address OxB2 located? 1) Repeat e) for low-order interleaving
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