I have been able to figure out some of the memory available and mapping for
the PRUSS.
ddrMem and extRAM are both part of the 500MByte DDR memory on the L3 buss.
This memory has a physical location starting at 0x8000 and goes to
0x9fef. It can be seen by doing >sudo cat /proc/iomem (a v
For any interested, I found the 2 lost cycle counts; I had changed my
cycle-counting macros to always load PCNTL0 for both PRUS using a MOV op
code which added 2 cycles of over-head I hadn't corrected for. The
SBCO r0, CONST_DDR, PARAM_OFFSET+0, 32 does take 9 cycles as expected. If
the ddrMem w
