can this be used to debug non-arm based ucs? routers and modems? im wondering because i am trying to find a cheap solution to modify some firmware.
You can use the STLink together with a OpenOCD. Many chips are supported. If you use a packaged version of openocd and your chip is not yet supported, look at git://git.code.sf.net/p/openocd/code an the pending patches at http://openocd.zylin.com/#/q/status:open
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