Appendix E. Processor Core Register Summary
E-23
MPC8240-Specific Registers
Table E-18 describes the bit settings of the RPA register.
E.2.5 Instruction Address Breakpoint Register (IABR)
The IABR, shown in Figure E-26, controls the instruction address breakpoint exception.
IABR[CEA] holds an effective address to which each instruction is compared. The
exception is enabled by setting bit 30 of IABR. The exception is taken when there is an
instruction address breakpoint match on the next instruction to complete. The instruction
tagged with the match will not be completed before the breakpoint exception is taken.
Figure E-26. Instruction Address Breakpoint Register (IABR)
The bits in the IABR are defined as shown in Table E-19.
E.3 MPC8240-Specific Registers
The hardware implementation-dependent registers (HIDx) are implemented differently in
the MPC8240 as described in the following subsections.
Table E-18. RPA Bit Settings
Bits
Name Description
0–19
RPN
Physical page number from PTE
20–22
—
Reserved
23
R
Referenced bit from PTE
24
C
Changed bit from PTE
25–28
WIMG
Memory/cache access attribute bits
29
—
Reserved
30–31
PP
Page protection bits from PTE
Table E-19. Instruction Address Breakpoint Register Bit Settings
Bit
Description
0–29
Word address to be compared
30
IABR enabled. Setting this bit indicates that the IABR exception is enabled.
31
Reserved
0
29 30 31
Reserved
CEA
IE 0
Summary of Contents for MPC8240
Page 1: ...MPC8240UM D Rev 1 1 2001 MPC8240 Integrated Processor User s Manual ...
Page 38: ...xviii MPC8240 Integrated Processor User s Manual TABLES Table Number Title Page Number ...
Page 48: ...xlviii MPC8240 Integrated Processor User s Manual Acronyms and Abbreviations ...
Page 312: ...6 94 MPC8240 Integrated Processor User s Manual ROM Flash Interface Operation ...
Page 348: ...7 36 MPC8240 Integrated Processor User s Manual PCI Host and Agent Modes ...
Page 372: ...8 24 MPC8240 Integrated Processor User s Manual DMA Register Descriptions ...
Page 394: ...9 22 MPC8240 Integrated Processor User s Manual I2O Interface ...
Page 412: ...10 18 MPC8240 Integrated Processor User s Manual Programming Guidelines ...
Page 454: ...12 14 MPC8240 Integrated Processor User s Manual Internal Arbitration ...
Page 466: ...13 12 MPC8240 Integrated Processor User s Manual Exception Latencies ...
Page 516: ...16 14 Watchpoint Trigger Applications ...
Page 538: ...B 16 MPC8240 Integrated Processor User s Manual Setting the Endian Mode of Operation ...
Page 546: ...C 8 MPC8240 Integrated Processor User s Manual ...
Page 640: ...INDEX Index 16 MPC8240 Integrated Processor User s Manual ...