Compaq AlphaServer ES40 User Manual

D-8 Compaq AlphaServer ES40 Service Guide
D.4 Cbox Read Register
The Cbox Read Register is read only by PAL code and is an element in
the CPU or system uncorrectable and correctable machine check error
logout frame.
Table D–4 Cbox Read Register Fields
Name Description
C_SYNDROME_1<7:0>
Syndrome for the upper QW in the OW of victim that
was scrubbed. See Appendix E.
C_SYNDROME_0<7:0> Syndrome for the lower QW in the OW of victim that
was scrubbed. See Appendix E.
Bits Error Status
00000 Either no error, or error on a speculative
load, of a B-cache victim read due to a
D-cache/B-cache miss.
00001 BC_PERR (B-cache tag parity error)
00010 DC_PERR (duplicate tag parity error)
00011 DSTREAM_MEM_ERR
00100 DSTREAM_BC_ERR
00101 DSTREAM_DC_ERR
0011X PROBE_BC_ERR
01000 Reserved
01001 Reserved
01010 Reserved
C_STAT<4:0>
01011 ISTREAM_MEM_ERR

Compaq AlphaServer ES40 Specifications

General

Brand	Compaq
Model	AlphaServer ES40
Category	Server
Language	English