CS401-Midterm
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decrements SP (the stack pointer) by two and then transfers a word from the source operand to the top of stack
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When a 32 bit number is divided by a 16 bit number, the quotient is of
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| 0 |--›| 1 | 1 | 0 | 1 | 0 | 0 | 0 | --›| C | is a example of ______
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To transfer control back the RET instruction take
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While using STOBS, if DF=1 then
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The iAPX888 architecture consists of _______ register.
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Which is the unidirectional bus ?
Control Bus
(II) Data Bus
(III) Address Bus
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assembly the CX register is used normally as a ______________register.
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The physical address of the stack is obtained by
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The basic function of SCAS instruction is to
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The execution of the instruction “mov word [ES: 0], 0x0741” will print “A” on the screen, color of the character will be
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allow changing specific processor behaviors and are used to play with it.
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In 8088 architecture, whenever an element is pushed on the stack
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Which mathematical operation is dominant during the execution of SCAS instruction
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The routine that executes in response to an INT instruction is called
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_________ is one of the reasons due to which string instructions are used in 8088
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One screen location corresponds to a
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In STOSB instruction, when DF is Set, SI is
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_______ register holds the address of next instruction is to be executed
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In STOS instruction, the implied source will always be in
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Each screen location corresponds to a word, the lower byte of this word contains ____
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When an item is pushed on the decrementing stack, the top of the stack is
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The first instruction of “COM” file must be at offset:
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physical address of the stack is obtained by
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Assembly language is:
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After the execution of REP instruction CX will be decremented then which of the following flags will be affected?
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RETF will pop the offset in the
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“mov byte [num1], 5” is _________ instruction.
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In the instruction MOV AX, 5 the number of operands are
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Only instructions allow moving data from memory to memory.
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one RET is executed, it recovers the values from
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After the execution of SAR instruction:
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In the instruction “CMP AX,BX” the contents of
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Regarding assembler, which statement is true:
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The execution of the instruction “mov word [ES : 0], 0x0741” will print character “A” on screen, color of the character will be
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After the execution of instruction “RET”
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In string manipulation whenever an instruction needs a memory source, which of the following will hold the pointer to it?
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Which bit of the attributes byte represents the red component of background color ?
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When a 32 bit number is divided by a 16 bit number, the quotient will be stored in
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“mov byte [num1],5” is _______ instruction.
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After the execution of instruction “RET ”
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After the execution of “PUSH AX” statement
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ASCII stands for ____________. The screen is two dimensional space having:
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After the execution of STOSW the CX will be
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JC and JNC test the ____________ flag.
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After the execution of MOVS instruction which of the following registers are updated
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All the addressing mechanisms in iAPX88 return a number called _____________ address.
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An offset alone is not complete without
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If the address of memory location Num1 is 0117 and its content is 0005 then after execution of the instruction “ mov bx, Num1” bx will contain
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