Storing data in a grey code system
AssigneeInternational Business Machines Corporation
InventorJunka Okazawa
Life of this patent
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Abstract
To provide an improved memory in which code or data can be read out in the original order even when it is successively accessed by a processor of a successive type according to addressing in a grey code system and a method of storing code/data in such memory. Code/data addressed in the original binary code system are stored in a memory in the form in which the original order and continuity are not lost even after the addresses are converted to a grey code system. Accordingly, a processor of successive type can read out code or data in the original order by consecutively outputting addresses according to a grey code address system. The power consumption of the address generator can be reduced in accessing to consecutive addresses by having addresses of the memory space expressed in a grey code.
Claims4
A method of storing data ordered in a binary code system in a memory with addresses converted to a grey code system comprising;
- a step of reading out data in the order of addresses expressed in a binary code from an external memory,
- a step of sequentially allocating addresses expressed in a grey code to the read out data,
- a step of storing the readout data according to the allocated grey code addresses in the memory, and
- a step of generating addresses from a successor type processor which is ordered in sequence of addresses in a binary code system is reordered to data in the sequence of addresses of a grey code system to the memory.
Dependencies are inferred from the claim text.