Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Patent
1997-05-12
1999-04-13
Swann, Tod R.
Electrical computers and digital processing systems: memory
Storage accessing and control
Control technique
395651, G06F 1300
Patent
active
058939237
ABSTRACT:
A circuit for selecting a base memory to be accessed by a microcontroller in response to a command from the microcontroller. An input receives the command from the microcontroller. The command selectively instructs the circuit to reset the microcontroller and signal the microcontroller to access an internal memory as the base memory. Also, the command selectively instructs the circuit to reset the microcontroller and signal the microcontroller to access an external memory as the base memory. A reset output is used to send the reset signal to the microcontroller, and a memory select output is used to send a memory select signal to the microcontroller. A logic circuit processes the command received from the microcontroller, and selectively sends an internal base memory select signal on the memory select output in response to the command received from the microcontroller, while the reset signal is being processed by the microcontroller, and selectively sends an external base memory select signal on the memory select output in response to the command received from the microcontroller while the reset signal is being processed by the microcontroller.
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Bush Craig Palmer
Langer David Brian
Aust Ronald K.
Lee Felix B.
Lexmark International Inc.
Neely Andrew S.
Swann Tod R.
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