Microprocessor with variable size register windowing

Details Microprocessor with variable size register windowing Microprocessor with variable size register windowing

1994-08-09

1997-06-24

Donaghue, Larry D.

395384, 395569, 395492, G06F 946, G06F 930

Patent

active

056425236

ABSTRACT:
The number of registers allocated to each register window (module) is stored in the memory means. The registers, constituting each module are determined by the number allocated in the memory means. Namely, in accordance with individual procedures in the program, a working register used on that procedure is determined and the number of registers constituting the working register is determined.
In addition, memorization of the number of registers allocated to each register window in the memory means is automatically carried out on the basis of address information for a working register. Alternatively, memorization of the number of allocation is carried out on the basis of one of the instructions that the CPU can execute.

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Borivoje Furht, "A RISC Architecture with Two-size, Overlapping Register Windows" p. 70, left col., line 31--right col., line 31; p. 71, left col., line 13--right col., line 35, IEEE Micro, vol. 8, No. 2, Apr. 1988, NY US.
Milt Leonard, "RISC microprocessors: many architectures thrive", p. 56, middle col., line 7-line 33, Electronic Design, vol. 36, No. 17, Jul. 1988, Hasbrouck Heights, NJ, pp. 49-58.
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Furht, "RISC Architecture with Multiple Overlapping Windows", Sep. 1985.
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Huguet, "C-Oriented Register Set Design" 1985, INSPEC Abstract.
Maejima et al 1986, "A 16-Bit Microprocessor with Multi-Register Bank Architecture".

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