In the future, this can be used for actual data, but for now, it's
so that devices can respond to timing accesses properly. This way,
an uncached access on a bus further away will take longer to respond.
dev/alpha_console.cc:
dev/alpha_console.hh:
suport the separate IO bus
--HG--
extra : convert_revision : ececb70f5febfd00231f6e406f93b2a79be01261
