System for storing different categories of routines in internal

Details System for storing different categories of routines in internal System for storing different categories of routines in internal

1992-04-29

1995-04-04

Lee, Thomas C.

Boots, shoes, and leggings

395575, 395700, 3642211, 3642219, 3642303, 364DIG7, G06F 922

Patent

active

054045479

ABSTRACT:
This invention relates to electronic equipment comprising microprocessors, and more specifically microprocessors employed within radio receiver circuits, incorporating on-chip memory (301, 302, 303) and which have the ability to operate in either a single chip or expanded mode. The single chip mode restricts microprocessor (300) operation to internal operation and thereby inhibits external addressing and locally generated noise whereas the expanded mode allows external addressing. A software program, comprised from modules of program code, is categorised into a first and a second category of routines. First category routines are related to equipment functions which are affected by generated noise to a higher degree and, when in operation, are stored in the internal memory (301, 302, 303). Second category routines are stored in a memory external to the microprocessor (201, 202) and are related to equipment functions which are affected by generated noise to a lesser degree. The first and second category routines are executed in the microprocessor's single chip and expanded modes respectively.

REFERENCES:
patent: 5020093 (1991-05-01), Pireh
Motorola, DSP5600 Digital Signal Processor User's Manual, .COPYRGT.1986 pp. 3-1 to 3-17.

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