5-32
Computer Group Literature Center Web Site
MCECC
5
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 MC68060 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.
ERRLOG When set, ERRLOG indicates that a single or a double bit
error has been logged by this MCECC, and that no more
is logged until it is cleared. The bit can only be set by
logging an error and cleared by writing a one to it. When
ERRLOG is cleared, the MCECC is ready to log a new
error. Note that because hardware duplicates control
register writes to both MCECCs, clearing ERRLOG in
one MCECC clears it in the other. Any available error
information in either MCECC should be recovered before
clearing ERRLOG.
Error Address (Bits 31-24)
This register reflects the value that was on bits 31-24 of the local MC68060
address bus at the last logging of an error.
ADR/SIZ
1st $FFF43060/2nd $FFF43160 (8-bits)
BIT
31
30
29
28
27
26
25
24
NAME
EA31
EA30
EA29
EA28
EA27
EA26
EA25
EA24
OPER
R
R
R
R
R
R
R
R
RESET
0 PLS
0 PLS
0 PLS
0 PLS
0 PLS
0 PLS
0 PLS
0 PLS
Содержание MVME172
Страница 1: ...MVME172 VME Embedded Controller Programmer s Reference Guide VME172A PG2 Edition of February 1999 ...
Страница 6: ...Place holder ...
Страница 18: ...xviii ...
Страница 78: ...1 60 Computer Group Literature Center Web Site Board Description and Memory Maps 1 ...
Страница 332: ...5 42 Computer Group Literature Center Web Site MCECC 5 ...
Страница 336: ...A 4 Related Documentation A ...
Страница 340: ...VMEchip2 Tick Timer 1 Periodic Interrupt Example B 4 Computer Group Literature Center Web Site B ...
Страница 352: ...Index IN 12 Computer Group Literature Center Web Site I N D E X ...
Страница 354: ......