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US 4,513,368 AGranted
Digital data processing system having object-based logical memory addressing and self-structuring modular memory
AssigneeData General Corporation
InventorDavid L. Houseman
Life of this patent
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Abstract
A digital computer system in which the memory is structured into objects, which are blocks of storage of arbitrary length, in which the data items are accessed by specifying the desired object and the desired data item's offset into that object. The memory controls accommodate any number of memory arrays of any size, automatically transforming the addresses to present the appearance of a single unified memory bank.
Claims2
A memory for use in a digital data system, comprising:
- memory bank means (MSB 1810) comprising a plurality of memory array means (MA 1812) for storing data,
- memory control means (MIC 1822, BC 1814) connected from certain portions (ATU 10228 via PD 10146, FIGS. 270 & 18) of said data system for receiving first addresses for controlling operation of said memory, for providing second addresses corresponding to said first addresses for controlling said memory bank means, said second addresses representing storage locations for said data in said memory bank means, and for conducting said data between said memory bank means and said certain portions of said digital data system, and
- memory array bus means (within MSB 1810) connected from said memory control means and to each one of said plurality of memory array means in parallel for conducting said data and said second addresses between said memory control means and each one of said plurality of memory array means,
- each one of said plurality of memory array means comprising
- data storage means connected from said memory array bus means for storing said data, and
- memory array address means connected from said memory array bus means and responsive to said second addresses for controlling said data storage means, said memory array address means including adaptive address means (A within MA 1812), the adaptive address means comprising
- means for indicating data storage capacity of said data storage means,
- address range indicating means for:
- (1) receiving from the memory control means a minimum address which the address range indicating means assigns to the lowest storage location within the corresponding memory array means, and
- (2) adding said data storage capacity to said minimum address to produce the address of the highest storage location within the memory array means, and,
- address comparison means for initiating operation of said memory array address means when one of the said second addresses occurs in the range between said lowest storage location within the corresponding memory array means and said highest storage location within the memory array means.
8 more elements
A digital data processing system including:
- memory means (MSB 1810) for storing the data organized as operands and instructions which specify operations to be performed on the operands,
- processing means (JP 114) responsive to the instructions for performing the operations on the operands,
- memory control means (MIC 1822) responsive to memory addresses for accessing the data in the memory means,
- bus means (MOD 140, JPD 142, PD 146, JPMC 147) for conducting the data between the memory means and the processing means,
- and address means (ATU 1928) for providing the memory addresses to the memory control means, the address means comprising:
- means (Parser 1964, Name Cache 1926) for receiving logical addresses from the instructions executing in the processing means, the logical addresses comprising:
- a first number denoting a certain one of a plurality of variable-length blocks of data, and
- a second number denoting an offset from the beginning of said certain block to a certain operand;
- means (ATU 1928) for translating each of the logical addresses to its corresponding memory address by translating said second number into a memory page number and an offset within that page, and translating said first number and said page number to yield a memory frame number, said memory frame number and said offset together comprising said memory address (FIG. 106c), and
- means (PD 146) connected from said address means to said memory control means for forwarding said memory addresses to the memory control means,
- whereby the memory means may be logically organized as a plurality of variable-length blocks of data, and the instructions may identify each operand by a logical address indicating a block and an offset within that block.
8 more elements
Dependencies are inferred from the claim text.