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Z80/8086/8088: 7805 vs. LM323K

I'm confused, as the S100 Z80 Master CPU parts-list specifies a 7805,
yet the silkscreen and images show a TO-3 case, and the general board
description indicates 3A.  These all seem to indicate that a LM323K is
the intended part.  Is that the case?  (I note that the LM323K has a
min. Vin of 7.5v ... which seems a bit iffy to me but 8v *is* still
higher :->).

Is the same also true for the 8086 and 8088 S100 boards -- use a LM323K?

Thanks for your insights and/or experience (for you builders out there).