Device and method for providing a simulation of an idle UART to prevent computer lockup
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United States of America Patent
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May 12, 1998
Grant Date -
N/A
app pub date -
Feb 12, 1996
filing date -
Feb 12, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention prevents an operating system from freezing operation of computer peripherals such as a PCMCIA modem card constructed using an AT&T HSM PID2 Chipset when a suspend mode is activated by the computer. The invention provides a simulation (device: 100, 200; method: 300, 600, 700) of an idle Universal Asynchronous Receiver Transmitter, UART, in a computer peripheral operably coupled to the computer wherein the simulation provides a logic one in a least significant bit position for the PCMCIA data bus, thereby indicating that no data remains to be sent on the PCMCIA data bus.
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