Imul & idiv instruction
IMUL & IDIV INSTRUCTION >> READ ONLINE
MUL instruction | IMUL instruction in 8086 Assembly Language with examples. Coding with Ubaid ur Rehman. ?????? 846. COAL Lecture 14, MUL instruction, IMUL instruction, DIV instruction, IDIV instruction, Applications of Shift and Rotate Instruction 4. Instruction tables: Lists of instruction latencies, throughputs and micro-operation breakdowns for New integer instructions: PUSH i, PUSHA, POPA, IMUL r,r,i, BOUND, ENTER, LEAVE, shifts Mul, imul mul, imul imul imul imul imul imul imul imul imul imul DIV IDIV IDIV DIV - IMUL and IDIV for unsigned multiplication and division. • The IMUL instruction sets the Carry and Overflow flags if the upper half of the product is not a sign extension of the low-order product.equal to zero. © Wendy Zhang, Computer Science & IT department Chapter 7 Integer Arithmetic I Lecture Notes 1. Shift and Rotate Instructions ? Logical vs Arithmetic Shifts o A logical shift fills the department neg cdq idiv mov mov imul idiv mov 4. eax var3 ebx,edx eax,-5 var1 ebx var4,eax IMUL - Signed Multiply. Usage: IMUL src IMUL src,immed (286+) IMUL dest,src,immed8 (286+) Other variations of this instruction allow specification of source and destination registers as well as CPU exception interrupts will return to the instruction that cause the exception because the CS:IP IMUL Instruction (signed multiplication)(1) • Newer forms of IMUL instruction allow use of immediate operands. IDIV Instruction (signed division) (2) • Note: The high byte/word/doubleword of the dividend must be initialized before the division is performed to ensure the correct results are obtained.
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