Motorola MVME1X7P manual Error Logger Register

Models: MVME1X7P

1 316
Download 316 pages 46.44 Kb
Page 275
Image 275

Programming Model

Error Logger Register

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

 

 

 

 

 

 

 

 

 

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 (MInot 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.

4

http://www.motorola.com/computer/literature

4-27

Page 275
Image 275
Motorola MVME1X7P manual Error Logger Register