Remote programming of microprocessor equipment over a standard serial port
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United States of America Patent
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Jun 15, 1999
Grant Date -
N/A
app pub date -
Sep 25, 1996
filing date -
Sep 25, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and apparatus for reprogramming a microprocessor through a serial port (18) is disclosed. An administrative computer (14) is connected to a serial port (18) on a machine (12) containing the microprocessor to be reprogrammed. A first sequence of signals is sent from the administrative computer (14) to the microprocessor (30) to change the microprocessor from a normal mode to a bootstrap mode. A new program is then loaded from the administrative computer (14) to the microprocessor (30). A second sequence of signals is sent from the administrative computer (14) to the microprocessor (30) to change the microprocessor (30) from the bootstrap mode to the normal mode.
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