_ DEC-O-LOG for KN7AA

_ DOL, KN7AA-O001, Memory config restrictions/Cache error corrrection routine

APR 94

APPLICABILITY:  This "O" coded FCO should be in
stalled on all DEC 7XXX and   DEC 10000-6XX sys
tems, replacing all E2040-AA(all revs),E2040-AB (all 
revs)   and E2040-YA (rev. A01, B01 and C01) CPU 
modules with new E2040-YA rev. D01   CPU module.	
	
These FCOs incorporate the following ECOs:
(1) E2040-AB-TWO001 and	 (2) E2040-YA-TWO003.	
	
This FCO will also upgrade all 182 MHZ systems to 
200 MHZ performance.    

PROBLEM & SYMPTOM:	
 (1) System currently has certain memory configuration 
restrictions that are checked by console prior to 
booting the system. The console will display the following 
message "INVALID MEMORY INTERLEAVING- boot disallowed", when  
a boot is attempted on the system.	
	
 (2) The Cache error correction routine does not prop
erly correct cache signal   bit errors. This problem has 
the potential to severely disrupt normal system operation.	

SOLUTION: Replace the E2040-AA(all revs); E2040-AB (all revs)
and E2040-YA(Rev. A01,B01,C01) CPU modules as per a procedure 
(see below) with new E2040-YA Rev. D01 module, minimum revision 
must be D01.
NOTE: All modules at Rev. D01 need a minimum Con
sole version V2.5	

QUICK CHECK: Verify that all System modules are 
E2040-YA at the minimum   Rev. D01 and the Spares 
kits are at Rev D01.	

FCO KIT ORDERING:                                            
EQ-01694-01 1 E2040-YA CPU module at Rev. D01 or higher	
FA-05031-01 1 Field Application (FA) Document	


_ DOL, KN7AA-F002, T2028-AA LAMB module

NOV 93  

PROBLEM: The T2028-AA LAMB module only al- 
lows longword aligned addressing on the XMI.

FIELD EFFECTIVITY: This "F" coded FCO will up 
grade all T2028-AA field spares. This FCO does not  
affect the systems. 

SOLUTION: Installation of a new LGA gate array  
will allow lower address bits (1,0) to be passed on to  
the XMI. This FCO will replace the field spares with  
revision "E*".

QUICK CHECK: Look for revision "E*" on the T2028  
module spare. 

FCO KIT ORDERING:
EQ-01686-01   T2028-AA LAMB Module, Rev. "E*"
FA-05022-01    FCO Document