Arhi needed to do some debugging on an ET-STM32F103 board. He whipped out his Bus Blaster v2 and got it working with the CooCox IDE, a free tool for working with ARM Cortex M0 and M3 32bit microcontrollers.
To summarize, if you want to program Cortex M0 or Cortex M3 on windows CooCox works perfectly with BusBlaster (fully operational, all debugging features enabled afaic).
p.s.
CooCox supports Atmel, Energy Micro, Holtek, NXP, Nuvoton, ST and TI made Cortex M0 and Cortex M3 mcu’s.
Thanks Arhi! Via the forum.