flushbus(D3X)flushbus(D3X)NAMEflushbus - make sure contents of the write buffer are flushed to the
system bus
SYNOPSISflushbus();
DESCRIPTIONflushbus performs the necessary actions to ensure that any writes in the
write buffer have actually been flushed to the system bus. This is
sometimes necessary when a device requires delays between PIOs,
particularly between a write and a read, since they might otherwise
arrive at the device back-to-back.
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