Arithmetic-logicunit（ALU）
作者: SP Dandamudi 摘要: To discuss the significance of the six status flags To describe in detail the arithmetic instructions of the Pentium instruction set To illustrate how multiword arithmetic operations are done To demonstrate the performance implications of various ways of performing ...
When the 8086 CPU first appeared in the late 1970's, semiconductor technology was not to the point where Intel could put floating point instructions directly on the 8086 CPU. Therefore, they devised a scheme whereby they could use a second chip to perform the floating point calculations - the...
Extended-precision integer arithmetic and logical instructions The invention set forth herein describes a mechanism for efficiently performing extended precision operations on multi-word source operands. Corresponding data words of the source operands are processed together via each instruction of a... RC ...
When the 8086 CPU first appeared in the late 1970's, semiconductor technology was not to the point where Intel could put floating point instructions directly on the 8086 CPU. Therefore, they devised a scheme whereby they could use a second chip to perform the floating point calculations - the...