Question

The upper 16 bits of the ECX register can be accessed independently like the lower 16 bits (CX) true or false?​

Answer 1

Answer:

FALSE - The upper 16 bits of the ECX register can be accessed independently like the lower 16 bits (CX)

Explanation:

The lower 16 bits of the ECX register can be accessed from (CX).

However, there is no direct access to upper 16-bit in extended register (ECX). Here upper 16 bit means - bit 16 to 31

Answer 2

‘The upper 16 bits of the ECX register can be accessed independently like the lower 16 bits (CX)’ is a FALSE statement.

Explanation:

• Nowadays, the modern x86 processors have 8 32-bit general purpose registers.  

• In that, EAX is used to be referred as accumulator which was used by the number of arithmetic operations.  

• ECX can be referred as counter where it is used for holding the loop index.  

• The remaining two namely ESP (stack pointer) and EBP (base pointer) are used for special purposes. For these 4 registers, subsections might be used.