**I don’t understand the value in the register R10, in my code python I have 0xa0a00000 and in the device(stm32 I have 0xfd090000 the value of tmp2 after Montgomery reduction) can someone help me please** the code arm .syntax unified .cpu cortex-m4 .thumb .macro montgomery q, qinv, a, tmp smulbt tmp, a, qinv smlabb tmp, […]