E

ECC (error correcting code)
   secondary cache
   matrix for secondary cache data array
   matrix for secondary cache tag array
   matrix for System interface
ECC register [1] [2]
efficiency, program, suggestions for increasing
electrical specifications
   AC
   DC
Enable, field (FP)
enable/output delay
EntryHi register [1] [2]
   ASID field in
EntryLo registers, and FrameMask register
EntryLo0 register [1] [2]
EntryLo1 register [1] [2]
EPC register
ERET, instruction
ERL, (error level) bit [1] [2]
ERR completion response
ERR, signal
error correcting code see also ECC
Error Exception Program Counter (ErrorEPC) register
error
   correctable
   handling
      protocol
   levels, in the Status register
   protection
   protection schemes, used in R10000
      ECC
      parity
      sparse encoding
   protection
      schemes used in R10000
   uncorrectable
      handling an
      limiting the propagation of
   units that detect and report uncorrectable errors
Event, field
EW, bit in CacheErr register
ExcCode, field
exception levels, in the Status register
exception processing, CPU
   precise handling
   exception types
      Address Error
      Breakpoint
      Bus Error
      Cache Error [1] [2]
      Coprocessor Unusable
      Floating-Point
      Integer Overflow
      Interrupt
      NMI
      Reserved Instruction
      Soft Reset
      System Call
      TLB
      TLB Invalid
      TLB Modified
      TLB Refill
      Trap
      Virtual Coherency
      Watch
   exception vector location
      Reset
      TLB Refill
   exception vector selection
   priority of [1] [2]
   TLB refill vector locations
Exception Program Counter (EPC) register
executing, an instruction
execution order
execution pipelines
execution units, iterative
execution, speculative [1] [2]
EXL, (exception level) bit [1] [2] [3]
external ACK completion response [1] [2]
external agent [1] [2] [3]
   also referred to as cluster coordinator
   connecting to
external allocate request number request protocol
external block data response [1] [2]
   protocol
external coherency conflicts
external coherency request latency
external coherency requests, action taken
external completion response [1] [2]
external double/single/partial-word data response protocol
external duplicate tags, support for
external interface
   memory accesses
   priority operations
external interrupt request
   protocol
external intervention exclusive request
external intervention request [1] [2]
external intervention shared request
external invalidate request [1] [2]
external NACK completion response
external request [1] [2] [3]
external response [1] [2] [3]