MOTOROLA
Chapter 8. Instruction and Data Caches
8-13
Part II. PowerPC Microprocessor Module
The DC_ADR register, shown in Figure 8-7, has an SPR encoding of 569.
4Ð7
CMD
Data cache command
0000 Reserved
0001 Set forced write-through bit
0010 Cache enable
0011 Clear forced write-through bit
0100 Cache disable
0101 Set true little-endian swap bit
0110 Load & lock cache block
0111 Clear little-endian swap bit
1000 Unlock cache block
1001 Reserved
1010 Unlock all
1011 Reserved
1100 Invalidate all
1101 Reserved
1110 Flush cache block
1111 Reserved
Note that reading these bits always returns 0b0000
8Ð9
Reserved
10
CCER1 Data cache error type 1Ñcopyback error during
dcbf
or
dcbst
instruction execution or during
DC_CST ßush cache block command. A machine check exception is generated when this bit is set.
0
No error detected
1
Error detected
Note that this is a read-only, sticky bit, set only by the MPC860 when an error is detected. Reading
this bit clears it.
11
CCER2 Data cache error type 2. This bit indicates one of two possible errorsÑeither a bus error during
DC_CST load & load cache block or ßush cache block command or there is no unlocked way
available for a DC_CST load & lock cache block or ßush cache block command.
0
No error detected
1
Error detected
Note that this is a read-only, sticky bit, set only by the MPC860 when an error is detected. Reading
this bit clears it.
12
CCER3 Data cache error type 3Ñreserved
13Ð31
Ñ
Reserved
BIT
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
FIELD
ADR
RESET
Ñ
R/W
R/W
SPR
569
Figure 8-7. Data Cache Address Register (DC_ADR)
Table 8-6. Data Cache Control and Status RegisterÑDC_CST (Continued)
Bits
Name
Description
Summary of Contents for MPC860 PowerQUICC
Page 3: ...MPC860UM AD 07 98 REV 1 MPC860 PowerQUICC ª UserÕs Manual ...
Page 36: ...xxxvi MPC860 PowerQUICC UserÕs Manual MOTOROLA CONTENTS Paragraph Number Title Page Number ...
Page 78: ...I iv MPC860 PowerQUICC UserÕs Manual MOTOROLA Part I Overview ...
Page 88: ...1 10 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part I Overview ...
Page 114: ...3 16 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part I Overview ...
Page 226: ...8 32 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part II PowerPC Microprocessor Module ...
Page 262: ...9 36 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part II PowerPC Microprocessor Module ...
Page 274: ...III iv MPC860 PowerQUICC UserÕs Manual MOTOROLA Part III Configuration ...
Page 320: ...12 12 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part III Configuration ...
Page 325: ...MOTOROLA Part IV Hardware Interface IV v Part IV Hardware Interface ...
Page 326: ...IV vi MPC860 PowerQUICC UserÕs Manual MOTOROLA Part IV Hardware Interface ...
Page 352: ...13 26 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part IV Hardware Interface ...
Page 394: ...14 42 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part IV Hardware Interface ...
Page 426: ...15 32 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part IV Hardware Interface ...
Page 530: ...17 26 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part IV Hardware Interface ...
Page 632: ...21 44 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 660: ...22 28 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 708: ...24 24 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 748: ...27 20 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 846: ...31 20 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 914: ...35 12 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 948: ...36 34 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 998: ...37 48 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part VI Debug and Test ...
Page 1016: ...A 10 MPC860 PowerQUICC UserÕs Manual MOTOROLA Appendixes ...
Page 1024: ...B 8 MPC860 PowerQUICC UserÕs Manual MOTOROLA Appendixes ...
Page 1030: ...C 6 MPC860 PowerQUICC UserÕs Manual MOTOROLA Appendixes ...
Page 1086: ...Glossary 12 MPC860 PowerQUICC UserÕs Manual MOTOROLA ...
Page 1106: ......