Question

Hex Viewer Case Study to be used for questions 1: Review this excerpt from a hex viewer. You can assume that all data shown is in hex. You can assume that two's complement is used to store signed integers with a 16-bit architecture which is byte addressable. Refer to this excerpt to answer the questions below: 000000 8A00 8E00 CFA1 48BF 7900 3202 9015 AD34 000010 0218 6D30 028D 3402 AD35 0288 3102 8035 000020 030 0290 DAEE 3102 4COO 0200 0040 004B 1. Refer to the first byte of memory shown above, address 000000. Assume that this byte is used to store an 8-bit unsigned integer. Write the decimal value stored in this byte. Show your work. GRADING RUBRIC: Finding the correct word is worth 1 point. Using the correct byte of the 16 bit word is worth 1 point. Converting the hex value to decimal is worth 4 points. Byte at address 000000: Decimal Value of the above byte as an unsigned 8 bit integer: 2. Assume that the byte stored at address 000002 holds a signed 8 bit integer. What is the decimal value of that byte? Show your work. GRADING RUBRIC: Finding the correct word is worth 1 point. Using the correct byte of the 16 bit word is worth 1 point. Converting the hex value to decimal is worth 4 points. Byte at address 000002: Decimal Value of the above byte as a signed 8 bit integer:

please show your steps and note that question 2 has a byte address of 000002 not 000000.
thanks

Answer 1

Answer 1 :
Address - 000000

Word at above address - 8A00
Value at first byte at address - 8A
Binary value of first byte at above address - 10001010
Decimal value of first byte at above address - 138

Answer 2 :
Address - 000002

Word at above address - CFA1
Value at first byte at address - CF
Binary value of first byte at above address - 11001111
Since, left most bit in binary representation is 1, that means the number is negative
Convert 2's complement to decimal :
1. Value = 11001111
2. Invert the bits = 00110000
3. Add 1 = 00110001
4. Decimal value of 00110001 is 49
Therefore, decimal value of first byte at above address : -49