20 Consider the following assembly program Write down the co

20. Consider the following assembly program. Write down the content of EAX register and value of the Carry flag after each instruction is executed: e-bt names 16 32 bn AH AX AL Accumulator EAX mov EAX, 0 Doos oo 78 mov AL, 78h EAX 600 12 AC add AX, 1234h I i CF O EAX add EAX, E4325678 CF 0 EAX E 132 6 12AC

Solution

In a assembly program, EAX is a 32-bit data register.

In assembly programs, four 32-bit data registers are used for arithmetic, logical, and other operations. These 32-bit registers can be used in three ways

As complete 32-bit data registers: EAX, EBX, ECX, EDX.

Lower halves of the 32-bit registers can be used as four 16-bit data registers: AX, BX, CX and DX.

Lower and higher halves of the above-mentioned four 16-bit registers can be used as eight 8-bit data registers: AH, AL, BH, BL, CH, CL, DH, and DL.

Now, Let\'s consider the given set of instructions one by one: