i meet the trouble:
intel h61 no problem
amd 770t,p55 will be crashed with xfx 470 cards, the driver is 16.9.2 or 16.11.4
the same rig,with amd 270 ,is no problem.
see below:
ZEC: 1 pool is specified
Main ZCash pool is zec.f2pool.com:3357
Catalyst 15.12 is REQUIRED for best performance and compatibility
At least 16 GB of Virtual Memory is required for multi-GPU systems
Make sure you defined GPU_MAX_ALLOC_PERCENT 100
Be careful with overclocking, use default clocks for first tests
Press "s" for current statistics, "0".."9" to turn on/off cards, "r" to reload pools
NOTE: miner uses 3000 rounds to calculate average speed, so it may take about a minute to get correct speed.
OpenCL initializing...
AMD Cards available: 1
GPU #0: Ellesmere, 3072 MB available, 32 compute units
POOL version
GPU #0 intensity 4
Total cards: 1
then the window tip: '........ stop working' and exit