Keil’s latest debug and trace unit supports ETM Instruction Trace on ARM Cortex-M3 microcontroller devices.
ULINKpro, together with MDK-ARM, is intended to provide extended on-the-fly debug capabilities for all Cortex-M devices.
“Users are able to control the processor, set breakpoints, and read/write memory contents, all while the processor is running at full speed,” said the company.
With the introduction of 
ETM Instruction Trace, ULINKpro enables users to examine which instructions were executed, processor memory accesses, and the actual application program flow.
“These are essential in debugging complex applications or measuring program code coverage during validation,” said Keil.
ULINKpro supports all ARM7, ARM9, and Cortex-M processor-based devices with JTAG speeds of up to 50MHz, and CPU clocks up to 200MHz.
Available from 
href="http://www.hitex.co.uk">Hitex.