Hi everyone! I am new to ARM development and have a few concerns about
setting up the whole development environment.

First of all, I would like to use a universal ARM programmer/debugger.
It seems like OpenOCD supports the USB Blaster/clone. The USB Blaster
was intended to program Altera CPLDs; does this mean I can use that
adapter to to program/debug ARM chips?

Second, I am quite confused that OpenOCD does not support Cortex M0
devices, but has support for the SWD transport. What does this mean? Can
I use the USB Blaster/clone adapter for both JTAG and SWD?

Last of all, I would like to know what debugging is like. I have been
using the LPCxpresso and its debugging session allows users to view
peripheral register contents (GPIO, ADC, SPI, etc), as shown in the
bottom right hand corner in this picture
http://torlus.com/images/2011/lpcx-blinky.png. Is this possible with the
open-source toolchains?

Thanks in advance!
Sincerely,

John