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5.4 Zero flag ¶

The Zero Flag is a single-bit register used for conditional branching and control flow decisions.
It stores the result of comparison and test operations,
enabling the implementation of ‘if’ and ‘while’.

• Data type: ‘unsigned char’
• Default value: ‘1’

The Zero Flag follows this logic:

Condition	Zero Flag Value
!= 0	‘1’ (true)
== 0	‘0’ (false)