K 10 svn:author V 3 bde K 8 svn:date V 27 1995-07-31T21:10:36.000000Z K 7 svn:log V 367 Sleep on a better address to wait for output to drain out of the hardware. Set the sleep-on flag for the address so there is more than a small chance that the sleep address is actually used (this used to work by timing out). Don't bother clearing the sleep-on flag after a timeout here or elsewhere since leaving it set just generates a few null calls to wakeup(). END