> For whatever it's worth, I've always maintained that stealing the Watchpoint > registers in this way was a pretty questionable hack to be avoided. Watchpoint > registers are *optional* in MIPS64 and may not even exist. And yes, someone > might want to use them for their intended purpose some day. However, please > note that the EJTAG breakpoint registers are completely orthogonal to the > watchpoint registers. That is true, but in SB1, watchpoint registers can be used by the JTAG debugger, and I do it all the time. It doesn't have the EJTAG breakpoint registers, but rather overloads (I know, I know) use of the watchpoint registers and has a mode bit for causing a debug exception instead of a general exception when they are tripped. Kip