Aspects of microarchitecture Microarchitecture

intel 80286 microarchitecture

the pipelined datapath commonly used datapath design in microarchitecture today. technique used in modern microprocessors, microcontrollers, , dsps. pipelined architecture allows multiple instructions overlap in execution, assembly line. pipeline includes several different stages fundamental in microarchitecture designs. of these stages include instruction fetch, instruction decode, execute, , write back. architectures include other stages such memory access. design of pipelines 1 of central microarchitectural tasks.

execution units essential microarchitecture. execution units include arithmetic logic units (alu), floating point units (fpu), load/store units, branch prediction, , simd. these units perform operations or calculations of processor. choice of number of execution units, latency , throughput central microarchitectural design task. size, latency, throughput , connectivity of memories within system microarchitectural decisions.

system-level design decisions such whether or not include peripherals, such memory controllers, can considered part of microarchitectural design process. includes decisions on performance-level , connectivity of these peripherals.

unlike architectural design, achieving specific performance level main goal, microarchitectural design pays closer attention other constraints. since microarchitecture design decisions directly affect goes system, attention must paid issues such chip area/cost, power consumption, logic complexity, ease of connectivity, manufacturability, ease of debugging, , testability.