Motorola MVME2600 Series Reference Manual page 193

Falcon ECC Memory Controller Chip Set
3
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embt embt is set when the last error logged was due to a
multiple-bit error. It is cleared when a 1 is written to the
elog bit. The syndrome code is meaningless if embt is set.
esbt esbt is set when the last error logged was due to a single-
bit error. It is cleared when a 1 is written to the elog bit or
when a multiple-bit error is logged. The syndrome code
reflects the bit in error. (Refer to the section on ECC
Codes.)
ERROR_SYNDROME
syndrome value at the last logging of an error. This eight-
bit code indicates the position of the data error. When all
the bits are zero, there was no error. Note that if the logged
error was non-correctable, then these bits are
meaningless. Refer to the section on ECC Codes for a
decoding of the syndromes.
esblk0,esblk1 Together these two read-only bits indicate which
block of DRAM was being accessed at the last logging of
a scrub error. esblk0,esblk1 are 0,0 for Block A; 0,1 for
Block B; 1,0 for Block C; and 1,1 for Block D.
scof scof is set by the SBE COUNT register rolling over from
$FF to $00. It is cleared by software writing a 1 to it.
SBE COUNT This register keeps track of the number of single-bit
errors that have occurred since it was last cleared. It
counts up by one each time its half of the Falcon pair
detects a single-bit error (independent of the state of the
elog bit). It is cleared by power-up reset and by software
writing all zeros to it. When SBE COUNT rolls over from
$FF to $00, the Falcon sets the scof bit. It also pulses the
INT_ signal low if the scien bit is set.
ERROR_SYNDROME reflects the