>> Are you aware that Sun's hardware flow control only works in one
>> direction? This is mentioned in zs(4). It sounds like you are
>> getting a buffer overrun.
>
>Hmmmm ... not being a serial communication expert (or even close), this
>sounds kinda brain dead to me. Is this suppose to be the case?
Yes.
The CPU serial port hardware on Suns is incapable of performing flow
control on incoming data; it can only control the flow of data going out
*from* the Sun. Thus, the hardware flow control only works in one
direction.
*Bi*-directional RTS/CTS flow control would have to be done in software,
and the SunOS 4.x driver doesn't do that. Given that SVR4 has an
"ioctl" interface to request bi-directional RTS/CTS flow control, SunOS
5.0 may support it.
This archive was generated by hypermail 2.1.2 : Fri Sep 28 2001 - 23:06:40 CDT