assemblyLanguageChap2

sync the internal operations of the CPU with other system components

• register

• clock

• ALU

• CU

perform arithmetic operations

& logical operations

• CU

• clock

• register

• ALU

a group of parallel wires that transfer data from one port of computer to another

• data bus

• I/O bus

• control bus

• address bus

• bus

status flags are updated after this step.

• instruction fetch

• instruction decode

• operation execution

• store results

operand are fetched from registers and memory

• instruction fetch

• instruction decode

• operation execution

• store results

There are __ 32-bit general purpose registers

• 4

• 8

• 16

• 14

__ is used for loop counter

• EAX

• EBX

• ECX

• EDX

__ is commonly used for accumulator

• EAX

• EBX

• ECX

• EDX

Which flag is set after this calculation?

mov al, 1000 1100b

add al, 0000 0010b

• Carry Flag

• Overflow Flag

• Zero Flag

• Parity Flag

two unsigned 8 bit numbers (264, 230) were added and saved in an 8 bit register. Which flag will be set?

• Carry flag

• Overflow flag

• Auxiliary Carry flag

• Parity flag