Search results
Results From The WOW.Com Content Network
The Intel 8085 ("eighty-eighty-five") is an 8-bit microprocessor produced by Intel and introduced in March 1976. [2] It is the last 8-bit microprocessor developed by Intel. It is software-binary compatible with the more-famous Intel 8080 with only two minor instructions added to support its added interrupt and serial input/output features.
existing instructions extended to a 64 bit operand size (remaining instructions) Most instructions with a 64 bit operand size encode this using a REX.W prefix; in the absence of the REX.W prefix, the corresponding instruction with 32 bit operand size is encoded. This mechanism also applies to most other instructions with 32 bit operand size.
In computer science, the fetch-and-add (FAA) CPU instruction atomically increments the contents of a memory location by a specified value. That is, fetch-and-add performs the following operation: increment the value at address x by a , where x is a memory location and a is some value, and return the original value at x .
For most instructions that accept a ModR/M byte, encodings with the SIB byte will result in the computation of a single effective address as (scale * index) + base + displacement as described above. However, some newer x86 instruction set extensions have added instructions that use the SIB byte in other, more specialized ways: VSIB addressing ...
Consider the simple task of adding two numbers, 5 + 4. In this case, the program would have to load the value 5 into the accumulator with the LOAD address instruction, use the ADD address instruction pointing to the address for the 4, and finally SAVE address to store the result, 9, back to another memory location. [4]
M/M/1 Model (Single Queue Single Server/ Markovian): In this model, elements of queue are served on a first-come, first-served basis. Given the mean arrival and service rates, then actual rates vary around these average values randomly and hence have to be determined using a cumulative probability distribution function .
The instruction set architecture (ISA) that the computer final version (SAP-3) is designed to implement is patterned after and upward compatible with the ISA of the Intel 8080/8085 microprocessor family. Therefore, the instructions implemented in the three SAP computer variations are, in each case, a subset of the 8080/8085 instructions. [2]
AMD was the first to introduce the instructions that now form Intel's BMI1 as part of its ABM (Advanced Bit Manipulation) instruction set, then later added support for Intel's new BMI2 instructions. AMD today advertises the availability of these features via Intel's BMI1 and BMI2 cpuflags and instructs programmers to target them accordingly.