Real-time, concurrent, multifunction digital signal processor subsystem for personal computers
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United States of America Patent
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-
Mar 1, 1994
Grant Date -
N/A
app pub date -
Sep 3, 1991
filing date -
Sep 3, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A personal computer system includes a digital signal processor (DSP) subsystem that is connectable to a plurality of application specific hardware devices. A single DSP is operable under a DSP real-time operating system (RTOS) to concurrently handle a plurality of different signal processing functions on a real-time basis. A DSP data store is connected to the DSP and to the personal computer and includes addressable locations that emulate addressable I/O registers associated with the application specific hardware devices to enable the personal computer to run a plurality of application programs controlling operation of the hardware devices. Performance is enhanced for I/O read and write operations by delaying halting of the DSP allowing such operations to complete in a cycle during which the DSP is not accessing the data store.
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