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公开(公告)号:EP0108346A2
公开(公告)日:1984-05-16
申请号:EP83110751.1
申请日:1983-10-27
IPC分类号: G06F12/06
CPC分类号: G06F12/0684 , G06F12/0653
摘要: Memory mapping method in a data processing system wherein the memory comprises a plurality of modules having a capacity variable by multiples of a basic capacity, said modules being totally passive, that is they provide no signal indicative of their own capacity or presence. Each memory locations is ideally belonging to one of several memory blocks, each of capacity equal to the basic one and belonging to one of the modules.
The addressing of a memory location involves the selection of the module containing such location by means of an auxiliary memory or directory where each addressable location is related to one of the possible memory blocks, such location being loaded with an information representative of the belonging of the related block to the pertaining module.
Each directory location, when read, provides a suitable signal of module selection.
The invention method solves the problem of the initial loading of the directory with the information corresponding to the real constitution of the memory and consists of the following steps:
- writing in the directory locations of an information of belonging of the memory blocks to a hypothetical first module,
- writing of test codes into memory locations belonging to different blocks
- checking by reading out the content of the same memory locations if such locations belong to the first module.
Once this checking has been performed, the above operations are repeated by writing into directory locations related to memory blocks not belonging to the first module information of belonging to a hypothetical subsequent module, by writing test codes into memory locations included in blocks not belonging to the first module and by checking the belonging of such blocks to the subsequent module, and so on for further subsequent modules up to depletion of the possible modules.摘要翻译: 在数据处理系统中的存储器映射方法,其中存储器包括多个模块,其容量可变为基本容量的倍数,所述模块是完全被动的,即它们不提供指示其自身容量或存在的信号。 每个存储器位置理想地属于几个存储器块中的一个,每个存储器块的容量等于基本容量,并且属于其中一个模块。 存储器位置的寻址涉及借助于辅助存储器或目录选择包含这种位置的模块,其中每个可寻址位置与可能的存储器块中的一个相关,这样的位置被加载有表示该 相关模块到相关模块。 每个目录位置在读取时提供一个合适的模块选择信号。 本发明方法解决了利用与存储器的实际构成相对应的信息初始加载目录的问题,并且包括以下步骤: - 将存储器块的所有权信息写入目录位置到假定的第一 模块, - 将测试代码写入属于不同块的存储器位置 - 如果这些位置属于第一模块,则通过读出相同存储器位置的内容来进行检查。 一旦执行了该检查,通过写入与不属于属于假设的后续模块的第一模块信息有关的存储器块的目录位置,通过将测试代码写入包含在不属于 第一个模块,并通过检查这些块到下一个模块的所属,等等,以便进一步后续的模块直到可能的模块耗尽。
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公开(公告)号:EP0108346B1
公开(公告)日:1989-07-05
申请号:EP83110751.1
申请日:1983-10-27
IPC分类号: G06F12/06
CPC分类号: G06F12/0684 , G06F12/0653
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