Which floating-point instructions accept immediate operands?

There is no PEP/9 opcode for floating point arithmetic   True or False?

When a C function returns a 32-bit integer, at which memory address is the return result kept?

In (emu8086), Assembly code is used. To show any four letters from the ASCII code in ascending order, can you write a programme?

Use the following data declarations: .data byte Val word Val sbyte 1, 2, 3, FCh word 1000h, 2000h, 3000h, 4000h dwordVal dword 34567890h, 90785634h, 0Ah, 33445566h Show the value of the final destination operand after each of the following code fragments has executed: (If any instruction/s is invalid, indicate "INV" as the answer and briefly explain why) a. mov bh,byteVal+2 b. mov edx,1 C. add dx,[wordVal+4] mov ecx,5 xchg ecx,[dwordVal+12] d. mov ah, byte Val+3 sub ah,[ byte Val+0] sub ah,[ byte Val +2] e. mov eax, dword ptr dwordVal+7 f. movsx cx,byteVal+3 answer bh= answer edx= answer ecx= answer ah= answer eax= answer (show your answer in binary) CX=

Explain the concept of overflow and underflow in integer arithmetic. How can these issues be addressed in computer programming?

There are two kinds of right-shift: arithmetic and logical. Unlike Java, which has two different right-shift operators, C has just one. On the Linux machines in the lab, how does the compiler decide which right-shift instruction to use?