memory to memory instruction
1.An instruction where each parameter is independent of the others, for example, when moving data from memory to a floating-point register.
2.It is compatible with the industry-standard 80C51 instruction set and pinout. The 8K Bytes on-chip downloadable Flash ROMs allows the program memory to be reprogrammed In-System through an SPI serial interface or by a conventional nonvolatile memory programmer. It can fully static operate at 24 MHz.
3.In this dissertation, the hardware/software co-design flow and AC3 decoding algorithm is analyzed and the AC3 audio decoding on the Virgo RISC-core. Then the extended instruction is added to lessen the CPU cycles used and to reduce the memory space used by the decoding program.
4.In order to estimate how the storage subsystem parameters influence the system performance, the address flow is simulated by random number sequence. An equal probability model is established to analyse the dispatching time of main memory and disc storage, and the distributions of the access time demanded by instruction flow and of the access time providing for data flow are presented.
5.Most modern microprocessors employ on-chip caches to bridge the enormous speed disparities between the main memory and central processing unit (CPU), but these caches consume a significant fraction of total energy dissipation, especially the power dissipated by instruction cache itself is often a significant part of the power dissipated by the entire on-chip caches.
6.Because of the complexity of the microprocessor structuing and the difficulty of its testing, the authors insert built-in-self-test (BIST) circuits in a microprocessor to test programmable-logic-array (PLA) in the instruction-decode unit and control-read-only-memory (CROM) in the execution unit.
