21.5.3 Register Access Protection
Certain registers cannot be modified while DIVAS is busy. The following registers are write-protected while busy:
- Control A (CTRLA21.6.1 Control A)
- Dividend (DIVIDEND21.6.3 Dividend)
- Divisor (DIVISOR21.6.4 Divisor)
- Square Root Input (SQRNUM21.6.7 Square Root Input)
Accessing these registers while protected will result in an error.