On Wed, 23 Sep 1998, Dave Huang wrote:

> On Wed, 23 Sep 1998, Ulrich Hausmann wrote:
> > I second this: Even the Apple IIGS can keep fine with 57.6 on its ser
> > port (having technically the same as the SE) and it's only at 4 Mhz and
> > 16 bit data bus! Well, you have to not run other processes or desk
> > accessories . . .

This thread started w/ talking about running IP-NAT. I think the ethernet
card and the routing counts enough as another process to mess things up
for the serial port.

> Um, it's more like 2.5MHz (the //c+ is the 4MHz machine). And I could
> never get 57.6Kbaud without silo overflows on an unaccelerated IIgs, even
> with something like ProTerm. My machine runs at 10MHz, and can handle
> 57.6K if (as you say) no other processes are running. The IIgs could
> handle localtalk though, I think by having the chip interrupt at the start
> of a packet, then polling for the rest (isn't that how it's also done
> under MacOS? At least for the non-DMA capable machines?)

Yes, you interupt on the first character & poll from there.

Take care,

Bill