8086 EMP

Which of the following addressing method does the instruction, MOV AX,[BX] represent?

• register indirect addressing mode

• direct addressing mode

• register addressing mode

• register relative addressing mode

Which of the following is the correct sequence of operations in a microprocessor?

• Opcode fetch, memory read, memory write, I/O read, I/O write

• Opcode fetch, memory write, memory read, I/O read, I/O write

• I/O read, opcode fetch, memory read, memory write, I/O write

• I/O read, opcode fetch, memory write, memory read, I/O write

The ________ directive instructs the assembler to begin memory allocation for a segment/block/code from the stated address.

• GROUP

• OFFSET

• ORG

• LABLE

The instruction, MOV AX, 0005H belongs to the address mode

• REGISTER

• DIRECT

• IMMEDIATE

• REGISTER RELATIVE

The instruction, MOV AX, 1234H is an example of

• based indexed addressing mode

• register addressing mode

• immediate addressing mode

• direct addressing mode

The instruction, MOV AX, [2500H] is an example of

• INDIRECT ADDRESSING

• DIRECT ADDRESSING

• REGISTER ADDRESSING

• IMMEDIATE ADDRESSING

The instruction, MOV AX,[BX] is an example of

• direct addressing mode

• register addressing mode

• register relative addressing mode

• register indirect addressing mode

If the location to which the control is to be transferred lies in a different segment other than the current one, then the mode is called

• intersegment direct mode

• intersegment indirect mode

• intersegment direct and indirect mode

• intrasegment mode

In the instruction, ASSUME CS : CODE, DS : DATA, SS : STACK
the ASSUME directive directs to the assembler the

• name of the stack segment

• name of the stack, code and data segments

• pointer address of the stack segment

• address of the stack segment

8086 does not support

• BCD operations

• Direct BCD packed multiplication

• logical operations

• Arithmetic operations