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Appendix E. Processor Core Register Summary
E-19
PowerPC Register Set
E.1.3.7 DSISR
The 32-bit DSISR is shown in Figure E-17.
Figure E-17. DSISR
For information about bit settings, see Chapter 4, “Exceptions,” in the MPC603e User’s
Manual.
E.1.3.8 Machine Status Save/Restore Register 0 (SRR0)
The format of SRR0 is shown in Figure E-18.
Figure E-18. Machine Status Save/Restore Register 0 (SRR0)Machine Status
Save/Restore Register 1 (SRR1)
The format of SRR1 is shown in Figure E-19.
Figure E-19. Machine Status Save/Restore Register 1 (SRR1)
E.1.3.9 Time Base Facility (TB)—OEA; Writing to the Time Base
Note that writing to the TB is reserved for supervisor-level software.
The simplified mnemonics, mttbl and mttbu, write the lower and upper halves of the TB,
respectively. The simplified mnemonics listed above are for the mtspr instruction. The
mtspr, mttbl, and mttbu instructions treat TBL and TBU as separate 32-bit registers;
setting one leaves the other unchanged. It is not possible to write the entire 64-bit time base
with a single instruction.
E.1.3.10 Decrementer Register (DEC)
The decrementer register (DEC), shown in Figure E-20, is a 32-bit decrementing counter
that is decremented once every four sys_logic_clk cycles and provides a mechanism for
causing a decrementer exception after a programmable delay.
DSISR
0
31
SRR0
0
29
30 31
00
Reserved
SRR1
0
31
Содержание MPC8240
Страница 1: ...MPC8240UM D Rev 1 1 2001 MPC8240 Integrated Processor User s Manual ...
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Страница 48: ...xlviii MPC8240 Integrated Processor User s Manual Acronyms and Abbreviations ...
Страница 312: ...6 94 MPC8240 Integrated Processor User s Manual ROM Flash Interface Operation ...
Страница 348: ...7 36 MPC8240 Integrated Processor User s Manual PCI Host and Agent Modes ...
Страница 372: ...8 24 MPC8240 Integrated Processor User s Manual DMA Register Descriptions ...
Страница 394: ...9 22 MPC8240 Integrated Processor User s Manual I2O Interface ...
Страница 412: ...10 18 MPC8240 Integrated Processor User s Manual Programming Guidelines ...
Страница 454: ...12 14 MPC8240 Integrated Processor User s Manual Internal Arbitration ...
Страница 466: ...13 12 MPC8240 Integrated Processor User s Manual Exception Latencies ...
Страница 516: ...16 14 Watchpoint Trigger Applications ...
Страница 538: ...B 16 MPC8240 Integrated Processor User s Manual Setting the Endian Mode of Operation ...
Страница 546: ...C 8 MPC8240 Integrated Processor User s Manual ...
Страница 640: ...INDEX Index 16 MPC8240 Integrated Processor User s Manual ...