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assembly - Differences between general purpose …?

assembly - Differences between general purpose …?

WebBased operands use a base register, BX or BP. Indexed operands use an index register, DI or SI. Based and indexed operands may both be used with displacements. … Web• It is like indexed, except you use a second register instead of a constant e.g. [ BX + SI ] • During execution, the processor uses a temporary register to calculate sum of register … ea all access ps5 WebIn x86 the registers bx and bp are totally unrelated. The only common thing about them is the word base.. bx (base index) is a general-purpose register (like ax, cx and dx), typically used as a pointer to data (used for arrays and such); bp (base pointer) is typically used … WebAug 18, 2016 · adding the displacement to the contents of a base or an index register (BP, BX, DI, or SI). Figure 3–10 shows the operation of the MOV AX,[BX+1000H] instruction. In this example, BX = 0100H and DS = 0200H, so the address generated is the sum of DS * 0H, BX, and the displacement of 1000H, which addresses location 03100H. Remember … class 9 half yearly syllabus 2022-23 social science WebSS – Stack Segment. Base location of the stack ES – Extra Segment. Additional base location for variables in memory. Index Registers The index registers contain offsets from a segment register for information we are interested about. There are four index registers: BP – Base Pointer, offset from SS register to locate variables on the stack WebNote that no addressing mode involving cx exists, so [cx] is not a valid memory operand.. The registers ax, cx, dx, bx, sp, bp, si, and di are called general purpose registers … ea alma science workshop Web- Data in a segment of memory are addressed by adding the displacement to the contents of a base or an index register (BP, BX, DI, or SI) - Uses a base or index register, plus …

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