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Re: [PLUG] PLUG Wireless/ Co-op?
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It depends which sparc models. The IPC, IPX, and I think JavaStation
Prototype have NO serial buffer. Every byte in the port triggers an
interrupt and the processor has to grab the byte. No DMA, no UART chip,
etc. They did it the super-cheap way, knowing that the serial ports
were mainly used for:
a.) Console
b.) Modem (and at the time modems weren't 56k yet).
I had the same problems with Solaris btw.
The 68k Macs I have had (Centris 610, powerbook 550C) didn't have
problems with the serial ports. The newer sparc machines don't either.
-- noah silva
On Thu, 2002-04-25 at 02:14, gabriel rosenkoetter wrote:
> On Wed, Apr 24, 2002 at 11:32:25PM -0400, Noah Silva wrote:
> > so, to explain more clearly, the (GS and GT) modem has to hook up either
> > to USB or to serial. Since the sparcs in question (mainly accellerated
> > IPX machines) don't have USB, they have to connect via serial. I found
> > out the hard way that while the machines are very reliable, the serial
> > ports on them really suck for anything above 33.6.
>
> Um... you sure that's not just the Linux driver? The sparcs have the
> same serial hardware as the mac68k machines, unless I'm
> hallucinating that memory. It's got some weird quirks, but it's
> pretty reliable under NetBSD. Or are you running SunOS on those
> machines?
>
> (Incidentally, the same serial chipset is very *un*reliable under
> NetBSD/macppc, some times causing a kernel panic when you kill the
> terminal software at the other end while using the serial port for a
> console. This doesn't happen on NetBSD/mac68k, so something's broke
> about the macppc driver. There are some differences between the
> machine dependent code--which should be moved to machine independent
> code anyhow--between sparc, mac68k, and macppc, though.)
>
> --
> gabriel rosenkoetter
> gr@eclipsed.net
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