IBM PowerPC 405GP User Manual page 311

Status information includes error type and master read/write status. DCPO_ESRO field and
DCPO_PLBBEAR or DCPO_MEMBEAR lock status is also reported.
DETO
. FLO
DET1 FL1 DET2 FL2 DET3
FL3
RWO ALO RW1 AL1 RW2 AL2 RW3 AL3
Figure 14-8. Decompression Controller Error Status Register 0 (DCPO_ESR)
0:2 DETO Decompression Error Type for Master 0 Master 0 is the processor core instruction
000 Time-out during ITE fetch cache unit (ICU).
001 Time-out during block fetch
010 Memory controller error during ITE
fetch
011 Memory controller error during block
fetch
100-111 Reserved
3
RWO ReadlWrite Status for Master
°
This implementation only reports errors for
°
Error operation was a write
compressed reads.
1 Error operation was a read
4 FLO DCPO_ESR Field Lock for Master 0
DCPO_ESR register fields are locked when
°
DCPO_ESR fields are unlocked the PLB_lockErr signal was active in the
1 DCPO_ESR fields are locked
cycle in which the error occurred.
5 ALO DCPO_MEMBEARlDCPO_PLBBEAR DCPO_MEMBEAR and DCPO_PLBBEAR
Address Lock for Master 0 are locked to this master address when the
o
Master has not locked PLB_lockErr signal was active in the cycle
DCPO_MEMBEAR and in which the error occurred.
DCPO_PLBBEAR
1 Master has locked DCPO_MEMBEAR
and DCPO_PLBBEAR
6:8 DET1 Decompression Error Type for Master 1 See description for DCPO_ESR[DETO].
Master1 is the processor core data cache
unit (DCU).
9
RW1
ReadlWrite Status for Master 1 This implementation only reports errors for
o
Error operation was a write compressed reads.
1 Error operation was a read
10 FL1 DCPO_ESR Field Lock for Master 1 DCPO_ESR register fields are locked when
o
DCPO_ESR fields are unlocked the PLB_lockErr signal was active in the
1 DCPO_ESR fields are locked
cycle in which the error occurred.
11 AL1 DCPO_MEMBEAR/DCPO_PLBBEAR DCPO_MEMBEAR and DCPO_PLBBEAR
Address Lock for Master 1 are locked to this master address when the
o
Master has not locked PLB_lockErr signal was active in the cycle
DCPO_MEMBEAR and in which the error occurred.
DCPO_PLBBEAR
1 Master has locked DCPO MEMBEAR
-
and DCPO_PLBBEAR
14-8 PPC405GP User's Manual Preliminary