Lpc2000

Bob,

> your statement about micros with JTAG not having an ICE is definitely
> true. What JTAG is lagging is trace. ARM provides a debug interface
> called ETM, Embedded Trace Macrocell(tm). Surpisingly this trace
> interface did not make it onto many devices yet, usually only the high
> priced versions, except the LPC2000 devices. They have the ETM
> interface built in. So, if you need more than just 2 HW-breakpoints
> offered if debugging from Flash, the ETM offers trace and tells you
> HOW you got to the location you were never suppossed to end up at.

And on the LPC210x you pay by losing half your I/O to JTAG and ETM.  I
can't see the use of ETM on a device with limited I/O capability.

-- Paul.