The XDS100 emulator is Texas Instruments’ ultra-low-cost USB-interface JTAG hardware reference design.
You can learn more for XDS100 at TI WIKI http://processors.wiki.ti.com/index.php/XDS100.
In V3 is add upport for ARM Ltd’s Single Wire Output (SWO). and Operates with clock up to 25Mhz, this is possible by the use of FPGA. Supported devices are: F28xx, C674x, C64x+, ARM9, C54xx, C55xx, C66x, Cortex™
Preliminary Sell price prognosis is: EUR 55.00
Availability: April 2012