Question

13. In 32-bit mode, if EBX is holding 0x004105BC, answer the following questions: a. How many bytes can the register EBX hold? b. How many bits can the register EBX hold? c. What is the hexadecimal value in the register BX? d. What is the hexadecimal value in the register BL?_ e. What is the hexadecimal value in the register BH? 14. In an 8-bit register, will 01111111 +00000001 cause the Carry Flag to set? Show the calculated result and briefly justify your answer. [2 points] 15. In an 8-bit register, will the addition of the signed numbers, 01111111 + 00000011 cause the il lounted result and briefly justify your answer. [2 points

Answer 1

3 EbX 16 32bits BX BH BL 8 8 Give eBX holding 004105BC EBX is 32 bit register so it can hold 4 bytes EBX can hold 32 bits 0 0 4 105BC7 BX register BX has OX05BC register B2 has OXBC (on (BC) 16 regesto BH has ox05 or (0516.

Olllllll + 00000011 10000010 since addition of two positive numbers resulted in a negative number, the overflow Hag is set. olodo Sign flag will be set when the -ool result is negative/ if the most significant от oto bit is set. In our case the sign flag is not set 16 I! 1000 ooolo OOOI!
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