Changes
Z80
,/* Internal state */
Normally, you never see the content of this register. But it leaks the info through to F5 and F3 in case of the BIT b,(HL) instruction. [https://zx-pk.ru/attachment.php?attachmentid=2989 Source]
|-
| Q || 8-bit || Internal register where it assembles the new content of the F register, before moving it back to F || On Zilog NMOS Z80, when the instruction doesn't compute new flags, this register is reset instead.
Normally, you never see the content of this register. But it leaks the info through in case of the SCF/CCF instructions. [https://worldofspectrum.org/forums/discussion/41704 Source]
