The 74882

The somewhat exotic 74AS882 from TI was designed for linking
8 ALUs together... but it only had 4 carry outputs.

Makes sense, because it reduces the circuitry inside
the carry chain, and the wiring between the ICs looks
a little bit nicer.

I wish, I would have used a similar concept in my MT15 CPU.

Using/abusing a 74882 as a "74182 replacement":

A trick of connecting two 74882 ICs together
for getting 8 fast carry outputs:

A similar IC was the 100179 (National Semiconductor),
except that it had a different pinout, low active /P, /G
and /Cn, /Cn+something signals... and that it was ECL.

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