O_NONBLOCK serial I/O blocks on 95, OK on NT

[Town, Brad]

Christopher Faylor [ mailto:cgf@redhat.com ] wrote:
> Serial I/O in cygwin uses MS overlapped I/O.  Maybe this 
> isn't completely
> implemented on w9x.

Microsoft's overlapped I/O for serial ports is fully implemented, though
it's just different enough to drive you crazy.  I've had times when serial
I/O code (straight Win32 API stuff) would work perfectly under NT/2000, but
would fail under Win9x because some parameters were considered invalid.  I
wish I could remember the details.

Brad Town

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