http://bugs.winehq.org/show_bug.cgi?id=4633
------- Additional Comments From fairy_maiden1999@yahoo.com 2006-15-07 15:14 ------- Apparently set_queue_size isn't what is causing the issue, per an op on #winehq. "Wine's serial port doesn't work in asynch mode for input" is apparently at least part of the problem. This issue appears to be related to bug 5398.