The binary is read RIGHT to LEFT.
0 or 1 - 1 CPU/Core on or off. 10 - Core/CPU 2 On, 1 Off. 100 - Core/CPU 3 On, 1 and 2 off. 101010 - Odd cores on, even off, 6 core. 10101010 - Odd cores on, even off, 8 core. 10101010101 - Even cores on, Odds off, 12 core.
Now convert those binaries into hexadecimal (Bin/Hex Calculator)
8 Core, Odd cores on: 1010 1010 = Hex AA.
A bit of confusion. As with most computer/digital things... first place is 0. So 8 cores looks like: 0,1,2,3,4,5,6,7 Most trivial/non parallelized processes hit core 0 the most. It is best to start with core 1, 3, 5, 7 for a CPU miner. Those are the virtualized cores in an i7, but are also least under contention.
For the XU4/HC1 CPU ( Samsung Exynos5422 big.LITTLE Cortex™ ARM Cortex-A15 (2.0Ghz) / Cortex-A7 (1.4 Ghz) Octa core )
0x008F = 4 Little + 1 Big 0x0070 = 3 Big
On windows you can use
c:\windows\system32\cmd.exe /C start /belownormal /affinity AA yourminer.exe...