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https://opencores.org/ocsvn/openfire2/openfire2/trunk
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[/] [openfire2/] [trunk/] [sw/] [lib/] [havebyte.c] - Rev 6
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#include "openfire.h" /* havebyte() -- poll if a byte is available in the serial port */ int havebyte(void) { return (*(volatile unsigned char *)UARTS_STATUS_REGISTER) & UART1_DATA_PRESENT; }