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CCR1
Core Configuration Register 1
PPC440x5 CPU Core User’s Manual Preliminary
Page 462 of 589
regsumm440core.fm.
September 12, 2002
CCR1
SPR 0x378 Supervisor R/W
See Core Configuration Register 1 (CCR1) on page 110.
Figure 10-2. Core Configuration Register 1 (CCR1)
0:7 ICDPEI
Instruction Cache Data Parity Error Insert
0 record even parity (normal)
1 record odd parity (simulate parity error)
Controls inversion of parity bits recorded when the
instruction cache is filled. Each of the 8 bits corre-
sponds to one of the instruction words in the line.
8:9 ICTPEI
Instruction Cache Tag Parity Error Insert
0 record even parity (normal)
1 record odd parity (simulate parity error)
Controls inversion of paritybits recordedfor the tag
field in the instruction cache.
10:11 DCTPEI
Data Cache Tag Parity Error Insert
0 record even parity (normal)
1 record odd parity (simulate parity error)
Controls inversion of paritybits recordedfor the tag
field in the data cache.
12 DCDPEI
Data Cache Data Parity Error Insert
0 record even parity (normal)
1 record odd parity (simulate parity error)
Controls inversion of parity bits recorded for the
data field in the data cache.
13 DCUPEI
Data Cache U-bit Parity Error Insert
0 record even parity (normal)
1 record odd parity (simulate parity error)
Controls inversion of parity bit recorded for the U
fields in the data cache.
14 DCMPEI
Data Cache Modified-bit Parity Error Insert
0 record even parity (normal)
1 record odd parity (simulate parity error)
Controls inversion of parity bits recorded for the
modified (dirty) field in the data cache.
15 FCOM
Force Cache Operation Miss
0 normal operation
1 cache ops appear to miss the cache
Force icbt , dcbt, dcbtst, dcbst, dcbf, dcbi, and
dcbz to appear to miss the caches. The intended
use is with icbt and dcbt only, which will fill a dupli-
cate line and allow testing of multi-hit parity errors.
See Section 4.2.4.7 Simulating Instruction Cache
Parity Errors for Software Testing on page 114 and
Figure 4.3.3.7 on page 130.
16:19 MMUPEI
Memory Management Unit Parity Error Insert
0 record even parity (normal)
1 record odd parity (simulate parity error)
Controls inversion of paritybits recordedfor the tag
field in the MMU.
20 FFF
Force Full-line Flush
0 flush only as much data as necessary.
1 always flush entire cache lines
When flushing 32-byte (8-word) lines from the data
cache, normal operation is to write nothing, a dou-
ble word, quad word, or the entire 8-word block to
the memory as required by the dirty bits. This bit
ensures that none or all dirty bits are set so that
either nothing or the entire 8-word block is written
to memory when flushing a line from the data
cache. Refer to Section 4.3.1.4 Line Flush Opera-
tions on page 121.
21:23
Reserved
0 7 8 9 10 11 12 13 14 15 16 19 20 21 23 24 25 31
MMUPEIDCMPEI
DCUPEI
FCOM
FFF
TCS
DCTPEI
DCDPEI
ICDPEI
ICTPEI