>Question is, will a V.34 modem overrun the serial port if compression
>clicks in? If so, how the !@#$% do I attach an external clock signal
>to the serial controller? Any hardware hackers out ther who might
>describe this? What is the max. speed a modem has been driven by a
>Personal DS?

You can do up to 115200, in a 5000/50, with -current. I beleive 1.3.3
has most of the improvements -current, apart from the 115200. My
5000/150 handles 115200 too, even with all devices at the same spl.

A 5000/25 should be fine up to 57.6.  (I think a /240 can handle two
ports at that speed.) If you realy need to go higher, we can put a
patch up on the FTP site.  The patch would have been in 1.3.4, but it
looks like 1.4 is going to beat that out the door ;)