Motorola MVME1X7P - Manual (Page 275)

Programming Model
http://www.motorola.com/computer/literature 4-27
4
Error Logger Register
SBE SINGLE BIT ERROR is set when the last error logged
was due to a single-bit error. It is cleared when a 1 is
written to the ERRLOG bit. The syndrome code reflects
the bit in error. (Refer to the
Syndrome Decoding section.)
MBE MULTIPLE BIT ERROR is set when the last error logged
was due to a multiple bit error. It is cleared when a 1 is
written to the ERRLOG bit. The syndrome code is
meaningless if MBE is set.
ERA This bit provides status for a function that is not currently
used in the MCECC sector.
EALT EALT indicates that the last logging of an error occurred
on a DRAM access by an alternate (MI
∗
not asserted)
local bus master.
ESCRB ESCRB indicates the entity that was accessing DRAM at
the last logging of a single- or double-bit error. If ESCRB
is 1, it indicates that the scrubber was accessing DRAM.
If ESCRB is 0, it indicates that the local MC680x0 bus
master was accessing DRAM.
ERD ERD reflects the state of the local bus READ signal pin at
the last logging of a single- or double-bit error. ERD = 1
corresponds to READ = high and ERD = 0 to READ =
low. ERD is meaningless if ESCRB is set.
ADR/SIZ 1st $FFF4305C/2nd $FFF4315C (8-bits)
BIT 31 30 29 28 27 26 25 24
NAME ERRLOG ERD ESCRB ERA EALT 0 MBE SBE
OPER R/C R R R R R R R
RESET 0 PLS 0 PLS 0 PLS 0 PLS 0 PLS X 0 PLS 0 PLS