Lazyweb: Sending Sun Stop-A from a serial console

So I’m currently connected to a v100 over a serial line to a keyspan USB adapter thingee, and a terminal running `screen /dev/tty.usbserial 9600`. This works swell for talking to Sun boxes, right up until I need to send Stop-A.

Sending ‘break’ (cmd-.) doesn’t work, and I can’t make any of the screen break thingees do much of anything.

Halp?

Update. Apparently the answer is one of:
1. Purchase ZTerm, which is not a Universal Binary and seems like it never will be, or
2. Find a Windows machine that has a proper break key