18 Questions
Which registers are used to hold the high 16-bit result in a 16 X 16 multiplication?
DL and DH
What is the purpose of the Stack Pointer (SP) in the stack segment?
Used as an offset for accessing stack data
When are the Stack Pointer (SP) and Base Pointer (BP) contents automatically updated?
During execution of POP or PUSH instructions
What is the role of the Base Pointer (BP) in the current SS?
Contains an offset address for based addressing mode
Which pair of registers are used together in indexed addressing for data string processing?
SI and DI
In a 32 ÷ 16 division, which registers hold the high 16-bit dividend (data) before division?
DL and DH
What is the main function of the Execution Unit in a microprocessor?
Executing instructions
Which register is used by I/O instructions for sending or receiving 16/8 bit data to/from an output/input device in the 8086 microprocessor?
Accumulator (AX)
What is the default segment register used with the Base Register (BX) in the 8086 microprocessor?
DS
Which register is used as a counter in instructions like SHIFT, ROTATE, and LOOP in the 8086 microprocessor?
Counter Register (CX)
In the 8086 microprocessor, which register consists of two 8-bit registers that can be combined to form a 16-bit register?
Base Register (BX)
Apart from general-purpose registers, which type of registers are present in the Execution Unit of the 8086 microprocessor?
Temporary Registers
What is the primary purpose of the AX register?
To store the 16-bit results of arithmetic and logic operations
Which register is used to hold the base value for accessing data from the stack memory using the SS register?
BP
What is the primary function of the SI and DI registers?
To hold the index values for source and destination operands in string operations
Which register is responsible for holding the status of the results after an execution is performed?
Flag Register
How many conditional flags are present in the 8086 microprocessor's Flag Register?
6
Which register is used to hold data for multiplication and division operations in the 8086 microprocessor?
DX
Explore the internal architecture of 8086 Microprocessor including the Bus Interface Unit, Execution Unit, Internal Registers, and Flags. Learn about the function and components of Execution Unit which includes a 16-bit ALU, Register Array, Flags, Temporary Registers, and Control Unit.
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