Final System (2)

Architecture

• Several ROD crates (3-10)
• Require VME 64x capable crate?
• CPU per crate
• ...could just run simple busserver
• ...but more sensible if higher level (run controller, daq producer, other services via CORBA?)

Crate CPU Functions

• Run controller(s) for the crate (standard or custom?)
  (read database, configure modules, load trigger, start/stop run actions, producer for test/calib events?)
• CPU runs other run-independent (monitor?) processes
• All hardware action via high level services (allow low level access via busserver?)
• Controls access to its modules (Resource Manager?)
• NB System crate/workstation has overall run controller for level 1 calo trigger system