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#154 Suport for interrupted block instruction undocumented flags behaviour
I don't know if this is really a feature request or a bug, but I'd like to know if there is any interest in implementing the subtle "interrupted block instruction" Z80 behaviour that was discovered recently?
See https://github.com/hoglet67/Z80Decoder/wiki/Undocumented-Flags
There is an example test for this behaviour here: https://github.com/MrKWatkins/ZXSpectrumNextTests/tree/1aa521d460fbbf838a350bfcde2556b89d832d8b/Tests/ZX48_ZX128/Z80BlockInstructionFlags
These tests do not pass on fuse currently, and I believe that one of the fuse z80 tests ( edb9_2 ) may fail when the behaviour is correct.
