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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.
An instruction set simulator (ISS) is a simulation model, usually coded in a high-level programming language, which mimics the behavior of a mainframe or microprocessor by "reading" instructions and maintaining internal variables which represent the processor's registers.
A cycle-accurate simulator is a computer program that simulates a microarchitecture on a cycle-by-cycle basis. In contrast an instruction set simulator simulates an instruction set architecture usually faster but not cycle-accurate to a specific implementation of this architecture; they are often used when emulating older hardware, where time precision is important for legacy reasons.
It is a tool for modeling the design and behavior of a microprocessor and its components, such as the ALU, cache memory, control unit, and data path, among others. The simulation allows researchers to explore the design space as well as to evaluate the performance and efficiency of novel microarchitecture features.
GNUSim8085 is a graphical simulator, assembler and debugger for the Intel 8085 microprocessor in Linux and Windows. It is among the 20 winners of the FOSS India Awards announced in February 2008. [1] GNUSim8085 was originally written by Sridhar Ratnakumar in fall 2003 when he realized that no proper simulators existed for Linux.
LISA (Language for Instruction Set Architectures) is a language to describe the instruction set architecture of a processor.LISA captures the information required to generate software tools (compiler, assembler, instruction set simulator, ...) and implementation hardware (in VHDL or Verilog) of a given processor.
There is one instruction register, a minimum of a 1-bit bypass register, one boundary scan register and optionally a 32 bit device_id register. The registers other than the instruction register are called TDRs or Test Data Registers. The boundary scan register (BSR) is unique as it is the register which is also mapped to the I/O of the device.
TRIPS was a microprocessor architecture designed by a team at the University of Texas at Austin in conjunction with IBM, Intel, and Sun Microsystems.TRIPS uses an instruction set architecture designed to be easily broken down into large groups of instructions (graphs) that can run on independent processing elements.