U2/Uturn, Runway to GSC Bus bridge
uturn* at mainbus?
astro* at uturn?
dino* at uturn?
lasi* at uturn?
gecko* at uturn?
sti* at uturn?
uturn provides the functionality of IOA
(not currently supported) as a bridge from the Runway bus (see
runway(4) for more information) to GSC. Modern systems, based on the
PA-8000 and later 64-bit CPUs, use the
version, whilst earlier systems, based on the PA-7200 CPU, used a different
version of the chip called
astro(4), cpu(4), dino(4), gecko(4), gsc(4), intro(4), pci(4), runway(4), sti(4)
uturn driver appeared in