now the emphasis is transferred to the design and implementation of memory system . before a deep discussing, some basic knowledge is introduced, such as the memory classification and hierarchy, address space, access controlling, cache, memory coherence, and the popular memory system implementation method . then the archteture of the target memory system is presented and divided into two subsystems, the virtual memory management subsystem and memory access subsystem, according to their function 接下來(lái)本文將重點(diǎn)轉(zhuǎn)移到研究已定目標(biāo)vliw處理器存儲(chǔ)系統(tǒng)的設(shè)計(jì)和實(shí)現(xiàn),先對(duì)存儲(chǔ)系統(tǒng)設(shè)計(jì)涉及的存儲(chǔ)器及其組織層次、地址空間、訪問(wèn)控制、cache、存儲(chǔ)一致性、常見(jiàn)的實(shí)現(xiàn)方式等因素作了分析,然后給出了目標(biāo)存儲(chǔ)系統(tǒng)的總體框架,并按功能將其劃分為虛存管理和訪存兩個(gè)子系統(tǒng)。