Subject: None
To: None <newsham@uhunix.uhcc.Hawaii.Edu>
From: Niklas Hallqvist <niklas@appli.se>
List: amiga-dev
Date: 08/15/1994 20:58:48
>>>>> "Tim" == Tim Newsham <newsham@uhunix.uhcc.Hawaii.Edu> writes:
Tim> I found out what my PPP problems where. It appears the serial
Tim> line cant keep up with large packets at 14.4 on my computer. I
Tim> noticed this while downloading files with rz. I would get errors
Tim> very periodically. I lowered the speed to 9.6 and everything
Tim> worked ok. In ppp I tried ping -s <size> pearl where pearl is my
Tim> gateway. The biggest packet that I could get through is 890
Tim> bytes (counting the IP/ICMP header). After 890 bytes all packets
Tim> are dropped. When I set the MRU to 890 everything works fine but
Tim> slow. I am using hardware flow-control btw...
You think you're using hw flowcontrol, I'd say. The only thing that works
are outgoing flocontrol i.e. CTS, RTS is *never* dealt with. We discover
it due to slow processors and the ridiculously cheap designed UART Amiga
is equipped with. Other archs have the problem as well but 16550's *do*
make a difference.
Tim> Someone else mentioned problems with the serial line but I dont
Tim> remember the exact details. Is anyong currently going through
Tim> the serial code?
I'll mail some patches to the list later this evening.
Niklas
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