Digital Equipment AlphaServer 1200, Руководство по обслуживанию

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Error Registers 5-5
Table 5-1 External Interface Status Register (continued)
Name Bits Type Description
<63:36> All ones.
SEO_HRD_ERR <35> R Second External Interface Hard Error.
Indicates that a fill from B-cache or main
memory, or a system address/command
received by the CPU has a hard error while
one of the hard error bits in the EI_STST
register is already set.
FIL_IRD <34> R Fill I-Ref D-Ref. When set, indicates that
the error occurred during an I-ref fill. When
clear, indicates that the error occurred during
a D-ref fill. This bit has meaning only when
one of the ECC or parity error bits is set.
This bit is not defined for a B-cache tag
parity error (BC_TPERR) or a B-cache tag
control parity error (BC_TC_ERR).
EI_PAR_ERR <33> R External Interface Command/Address
Parity Error. Indicates that an address and
command received by the CPU has a parity
error.
UNC_ECC_ER <32> R Uncorrectable ECC Error. Indicates that
fill data received from outside the CPU
contained an uncorrectable ECC error. In
parity mode, this bit indicates a data parity
error.