Question

This will very likely look like a very simple question to some, but when looking at the following register schema:

enter image description here

and considering that the 'general' flag register is an 8-bit representation of the flag bits, I'm wondering:

Does the 'alternate' F' register always point to the exact same flag bits, or can it contain a different byte in any way (I know alternate registers can not be directly accessed but only be swapped in).

In other words, are the byte contents of 'general' register F content always equal to 'alternate' register F' (representing the same unique flag bits - assuming the 'swap the alternate register' instruction does not alter the flag bits) ?

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Solution

They are completely different. Alt-F is simply the flag register for the Alt-set.

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