IBM POWERPC 750GL Manual de usuario

IBM PowerPC 750GX and 750GL RISC Micro-processorUser’s Manual Version 1.2March 27, 2006 Title Page

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPage 10 of 377750gx_umTOC.fm.(1.2)March 27, 20068.6.2 No-DRTRY Mode ...

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorProgramming ModelPage 100 of 377gx_02.fm.(1.2)March 27, 2006Implementation Notes—The foll

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_02.fm.(1.2)March 27, 2006 Programming ModelPage 101 of 377Integer Store Instructions

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorProgramming ModelPage 102 of 377gx_02.fm.(1.2)March 27, 2006If store gathering is enabled

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_02.fm.(1.2)March 27, 2006 Programming ModelPage 103 of 377Integer Load-and-Store Stri

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorProgramming ModelPage 104 of 377gx_02.fm.(1.2)March 27, 2006For software compatibility, t

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_02.fm.(1.2)March 27, 2006 Programming ModelPage 105 of 377Table 2-24 summarizes the s

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorProgramming ModelPage 106 of 377gx_02.fm.(1.2)March 27, 2006Architecturally, all single-p

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_02.fm.(1.2)March 27, 2006 Programming ModelPage 107 of 377speculatively executed inst

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorProgramming ModelPage 108 of 377gx_02.fm.(1.2)March 27, 2006Trap Instructions The trap in

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_02.fm.(1.2)March 27, 2006 Programming ModelPage 109 of 377Implementation Note: The Po

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessor750gx_umTOC.fm.(1.2)March 27, 2006 Page 11 of 37711.1 Performance-Monitor Interrupt ...

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorProgramming ModelPage 110 of 377gx_02.fm.(1.2)March 27, 2006DBAT7L 575 10001 11111 Superv

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_02.fm.(1.2)March 27, 2006 Programming ModelPage 111 of 377TBL2268 01000 01100 User (V

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorProgramming ModelPage 112 of 377gx_02.fm.(1.2)March 27, 2006Encodings for the 750GX-speci

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_02.fm.(1.2)March 27, 2006 Programming ModelPage 113 of 3772.3.4.7 Memory Synchronizat

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorProgramming ModelPage 114 of 377gx_02.fm.(1.2)March 27, 2006Table 2-36 shows the mftb ins

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_02.fm.(1.2)March 27, 2006 Programming ModelPage 115 of 3772.3.5.3 Memory Control Inst

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorProgramming ModelPage 116 of 377gx_02.fm.(1.2)March 27, 2006Table 2-38 summarizes the cac

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_02.fm.(1.2)March 27, 2006 Programming ModelPage 117 of 3772.3.5.4 Optional External C

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorProgramming ModelPage 118 of 377gx_02.fm.(1.2)March 27, 2006output the 4-bit resource ID

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_02.fm.(1.2)March 27, 2006 Programming ModelPage 119 of 3772.3.6.3 Memory Control Inst

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPage 12 of 377750gx_umTOC.fm.(1.2)March 27, 2006

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorProgramming ModelPage 120 of 377gx_02.fm.(1.2)March 27, 2006Translation Lookaside Buffer

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_03.fm.(1.2)March 27, 2006 Instruction-Cache and Data-Cache OperationPage 121 of 3773.

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction-Cache and Data-Cache OperationPage 122 of 377gx_03.fm.(1.2)March 27, 2006Both

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_03.fm.(1.2)March 27, 2006 Instruction-Cache and Data-Cache OperationPage 123 of 3773.

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction-Cache and Data-Cache OperationPage 124 of 377gx_03.fm.(1.2)March 27, 20063.2

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_03.fm.(1.2)March 27, 2006 Instruction-Cache and Data-Cache OperationPage 125 of 3773.

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction-Cache and Data-Cache OperationPage 126 of 377gx_03.fm.(1.2)March 27, 2006Thes

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_03.fm.(1.2)March 27, 2006 Instruction-Cache and Data-Cache OperationPage 127 of 377Th

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction-Cache and Data-Cache OperationPage 128 of 377gx_03.fm.(1.2)March 27, 2006Sect

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_03.fm.(1.2)March 27, 2006 Instruction-Cache and Data-Cache OperationPage 129 of 377An

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessor750gx_umLOF.fm.(1.2)March 27, 2006 List of FiguresPage 13 of 377List of FiguresFigure 1-

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction-Cache and Data-Cache OperationPage 130 of 377gx_03.fm.(1.2)March 27, 20063.3.

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_03.fm.(1.2)March 27, 2006 Instruction-Cache and Data-Cache OperationPage 131 of 377at

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction-Cache and Data-Cache OperationPage 132 of 377gx_03.fm.(1.2)March 27, 20063.4.

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_03.fm.(1.2)March 27, 2006 Instruction-Cache and Data-Cache OperationPage 133 of 3773.

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction-Cache and Data-Cache OperationPage 134 of 377gx_03.fm.(1.2)March 27, 2006are

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_03.fm.(1.2)March 27, 2006 Instruction-Cache and Data-Cache OperationPage 135 of 377Fo

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction-Cache and Data-Cache OperationPage 136 of 377gx_03.fm.(1.2)March 27, 20063.4.

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_03.fm.(1.2)March 27, 2006 Instruction-Cache and Data-Cache OperationPage 137 of 377Fi

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction-Cache and Data-Cache OperationPage 138 of 377gx_03.fm.(1.2)March 27, 2006If a

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_03.fm.(1.2)March 27, 2006 Instruction-Cache and Data-Cache OperationPage 139 of 377Th

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorList of FiguresPage 14 of 377750gx_umLOF.fm.(1.2)March 27, 2006Figure 8-5. First Level Ad

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction-Cache and Data-Cache OperationPage 140 of 377gx_03.fm.(1.2)March 27, 2006Burs

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_03.fm.(1.2)March 27, 2006 Instruction-Cache and Data-Cache OperationPage 141 of 3773.

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction-Cache and Data-Cache OperationPage 142 of 377gx_03.fm.(1.2)March 27, 20063.6.

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_03.fm.(1.2)March 27, 2006 Instruction-Cache and Data-Cache OperationPage 143 of 377th

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction-Cache and Data-Cache OperationPage 144 of 377gx_03.fm.(1.2)March 27, 2006Writ

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_03.fm.(1.2)March 27, 2006 Instruction-Cache and Data-Cache OperationPage 145 of 3773.

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction-Cache and Data-Cache OperationPage 146 of 377gx_03.fm.(1.2)March 27, 2006Tabl

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_03.fm.(1.2)March 27, 2006 Instruction-Cache and Data-Cache OperationPage 147 of 3773.

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction-Cache and Data-Cache OperationPage 148 of 377gx_03.fm.(1.2)March 27, 2006dcbs

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_03.fm.(1.2)March 27, 2006 Instruction-Cache and Data-Cache OperationPage 149 of 377tl

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessor750gx_umLOT.fm.(1.2)March 27, 2006 List of TablesPage 15 of 377List of TablesTable 1-1.

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction-Cache and Data-Cache OperationPage 150 of 377gx_03.fm.(1.2)March 27, 2006

User’s ManualIBM PowerPC 750GX and GL RISC Microprocessorgx_04.fm.(1.2)March 27, 2006 ExceptionsPage 151 of 3774. ExceptionsThe operating environmen

User’s ManualIBM PowerPC 750GX and GL RISC MicroprocessorExceptionsPage 152 of 377gx_04.fm.(1.2)March 27, 2006Note: The PowerPC Architecture documen

User’s ManualIBM PowerPC 750GX and GL RISC Microprocessorgx_04.fm.(1.2)March 27, 2006 ExceptionsPage 153 of 3774.2 Exception Recognition and Priorit

User’s ManualIBM PowerPC 750GX and GL RISC MicroprocessorExceptionsPage 154 of 377gx_04.fm.(1.2)March 27, 2006• Exceptions caused by asynchronous eve

User’s ManualIBM PowerPC 750GX and GL RISC Microprocessorgx_04.fm.(1.2)March 27, 2006 ExceptionsPage 155 of 377Table 4-3. Exception Priorities Prior

User’s ManualIBM PowerPC 750GX and GL RISC MicroprocessorExceptionsPage 156 of 377gx_04.fm.(1.2)March 27, 2006System reset and machine-check exceptio

User’s ManualIBM PowerPC 750GX and GL RISC Microprocessorgx_04.fm.(1.2)March 27, 2006 ExceptionsPage 157 of 3774.3.2 Machine Status Save/Restore Reg

User’s ManualIBM PowerPC 750GX and GL RISC MicroprocessorExceptionsPage 158 of 377gx_04.fm.(1.2)March 27, 20064.3.3 Machine State Register (MSR)Reser

User’s ManualIBM PowerPC 750GX and GL RISC Microprocessorgx_04.fm.(1.2)March 27, 2006 ExceptionsPage 159 of 377The IEEE floating-point exception mod

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorList of TablesPage 16 of 377750gx_umLOT.fm.(1.2)March 27, 2006Table 2-34. SPR Encodings f

User’s ManualIBM PowerPC 750GX and GL RISC MicroprocessorExceptionsPage 160 of 377gx_04.fm.(1.2)March 27, 2006 4.3.4 Enabling and Disabling Exception

User’s ManualIBM PowerPC 750GX and GL RISC Microprocessorgx_04.fm.(1.2)March 27, 2006 ExceptionsPage 161 of 3770x000n_nnnn. If IP is set, exceptions

User’s ManualIBM PowerPC 750GX and GL RISC MicroprocessorExceptionsPage 162 of 377gx_04.fm.(1.2)March 27, 20064.4 Process SwitchingThe following inst

User’s ManualIBM PowerPC 750GX and GL RISC Microprocessorgx_04.fm.(1.2)March 27, 2006 ExceptionsPage 163 of 377The setting of the exception prefix b

User’s ManualIBM PowerPC 750GX and GL RISC MicroprocessorExceptionsPage 164 of 377gx_04.fm.(1.2)March 27, 20064.5.1.1 Soft ResetIf SRESET is asserted

User’s ManualIBM PowerPC 750GX and GL RISC Microprocessorgx_04.fm.(1.2)March 27, 2006 ExceptionsPage 165 of 377The hard reset exception is a nonreco

User’s ManualIBM PowerPC 750GX and GL RISC MicroprocessorExceptionsPage 166 of 377gx_04.fm.(1.2)March 27, 2006Table 4-7. Settings Caused by Hard Rese

User’s ManualIBM PowerPC 750GX and GL RISC Microprocessorgx_04.fm.(1.2)March 27, 2006 ExceptionsPage 167 of 377The following is also true after a ha

User’s ManualIBM PowerPC 750GX and GL RISC MicroprocessorExceptionsPage 168 of 377gx_04.fm.(1.2)March 27, 2006A TEA indication on the bus can result

User’s ManualIBM PowerPC 750GX and GL RISC Microprocessorgx_04.fm.(1.2)March 27, 2006 ExceptionsPage 169 of 377When a machine-check exception is tak

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessor750gx_umLOT.fm.(1.2)March 27, 2006 List of TablesPage 17 of 377Table 5-7. Table-Search O

User’s ManualIBM PowerPC 750GX and GL RISC MicroprocessorExceptionsPage 170 of 377gx_04.fm.(1.2)March 27, 2006stops dispatching and waits for all pen

User’s ManualIBM PowerPC 750GX and GL RISC Microprocessorgx_04.fm.(1.2)March 27, 2006 ExceptionsPage 171 of 3774.5.8 Floating-Point Unavailable Exce

User’s ManualIBM PowerPC 750GX and GL RISC MicroprocessorExceptionsPage 172 of 377gx_04.fm.(1.2)March 27, 20064.5.13 Performance-Monitor Interrupt (0

User’s ManualIBM PowerPC 750GX and GL RISC Microprocessorgx_04.fm.(1.2)March 27, 2006 ExceptionsPage 173 of 3774.5.14 Instruction Address Breakpoint

User’s ManualIBM PowerPC 750GX and GL RISC MicroprocessorExceptionsPage 174 of 377gx_04.fm.(1.2)March 27, 2006Like the external interrupt, a system m

User’s ManualIBM PowerPC 750GX and GL RISC Microprocessorgx_04.fm.(1.2)March 27, 2006 ExceptionsPage 175 of 377The thermal-management interrupt is s

User’s ManualIBM PowerPC 750GX and GL RISC MicroprocessorExceptionsPage 176 of 377gx_04.fm.(1.2)March 27, 20064.5.19 Exception LatenciesLatencies for

User’s ManualIBM PowerPC 750GX and GL RISC Microprocessorgx_04.fm.(1.2)March 27, 2006 ExceptionsPage 177 of 3774.5.21 Timer FacilitiesAt power-on re

User’s ManualIBM PowerPC 750GX and GL RISC MicroprocessorExceptionsPage 178 of 377gx_04.fm.(1.2)March 27, 2006

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_05.fm.(1.2)March 27, 2006 Memory ManagementPage 179 of 3775. Memory ManagementThis ch

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorList of TablesPage 18 of 377750gx_umLOT.fm.(1.2)March 27, 2006Table 11-7. HID2 Checkstop

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorMemory ManagementPage 180 of 377gx_05.fm.(1.2)March 27, 2006Basic features of the 750GX M

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_05.fm.(1.2)March 27, 2006 Memory ManagementPage 181 of 3775.1.1 Memory AddressingA pr

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorMemory ManagementPage 182 of 377gx_05.fm.(1.2)March 27, 2006the memory subsystem. The MMU

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_05.fm.(1.2)March 27, 2006 Memory ManagementPage 183 of 377Figure 5-1. MMU Conceptual

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorMemory ManagementPage 184 of 377gx_05.fm.(1.2)March 27, 2006Figure 5-2. PowerPC 750GX Mic

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_05.fm.(1.2)March 27, 2006 Memory ManagementPage 185 of 377Figure 5-3. 750GX Microproc

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorMemory ManagementPage 186 of 377gx_05.fm.(1.2)March 27, 20065.1.3 Address-Translation Mec

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_05.fm.(1.2)March 27, 2006 Memory ManagementPage 187 of 377When the processor generate

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorMemory ManagementPage 188 of 377gx_05.fm.(1.2)March 27, 2006The no-execute option provide

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_05.fm.(1.2)March 27, 2006 Memory ManagementPage 189 of 3775.1.6 General Flow of MMU A

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_preface.fm.(1.2)March 27, 2006 Page 19 of 377About This ManualThis user’s manual defi

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorMemory ManagementPage 190 of 377gx_05.fm.(1.2)March 27, 20065.1.6.2 Page-Address-Translat

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_05.fm.(1.2)March 27, 2006 Memory ManagementPage 191 of 377Figure 5-6. General Flow of

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorMemory ManagementPage 192 of 377gx_05.fm.(1.2)March 27, 2006If the T bit in the Segment R

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_05.fm.(1.2)March 27, 2006 Memory ManagementPage 193 of 377The state saved by the proc

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorMemory ManagementPage 194 of 377gx_05.fm.(1.2)March 27, 20065.1.8 MMU Instructions and Re

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_05.fm.(1.2)March 27, 2006 Memory ManagementPage 195 of 377Figure 5-6 summarizes the r

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorMemory ManagementPage 196 of 377gx_05.fm.(1.2)March 27, 2006For information on the synchr

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_05.fm.(1.2)March 27, 2006 Memory ManagementPage 197 of 377page-address translation an

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorMemory ManagementPage 198 of 377gx_05.fm.(1.2)March 27, 2006• Accesses that cause excepti

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_05.fm.(1.2)March 27, 2006 Memory ManagementPage 199 of 377For more information, see “

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User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPage 20 of 377gx_preface.fm.(1.2)March 27, 2006Conventions Used in This ManualNotational

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorMemory ManagementPage 200 of 377gx_05.fm.(1.2)March 27, 2006Each TLB contains 128 entries

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_05.fm.(1.2)March 27, 2006 Memory ManagementPage 201 of 377To uniquely identify a TLB

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorMemory ManagementPage 202 of 377gx_05.fm.(1.2)March 27, 2006Other than the possible TLB m

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_05.fm.(1.2)March 27, 2006 Memory ManagementPage 203 of 377Figure 5-8. Page-Address-Tr

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorMemory ManagementPage 204 of 377gx_05.fm.(1.2)March 27, 20065.4.5 Page Table-Search Opera

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_05.fm.(1.2)March 27, 2006 Memory ManagementPage 205 of 377Figure 5-9. Primary Page Ta

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorMemory ManagementPage 206 of 377gx_05.fm.(1.2)March 27, 2006The load store unit (LSU) ini

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_05.fm.(1.2)March 27, 2006 Memory ManagementPage 207 of 3775.4.6 Page Table UpdatesWhe

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorMemory ManagementPage 208 of 377gx_05.fm.(1.2)March 27, 2006

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_06.fm.(1.2)March 27, 2006 Instruction TimingPage 209 of 3776. Instruction TimingThis

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_preface.fm.(1.2)March 27, 2006 Page 21 of 377Terminology ConventionsThe following tab

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction TimingPage 210 of 377gx_06.fm.(1.2)March 27, 2006Fetch The process of bringin

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_06.fm.(1.2)March 27, 2006 Instruction TimingPage 211 of 3776.2 Instruction Timing Ove

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction TimingPage 212 of 377gx_06.fm.(1.2)March 27, 2006• 64-bit floating-point unit

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_06.fm.(1.2)March 27, 2006 Instruction TimingPage 213 of 377The instruction pipeline s

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction TimingPage 214 of 377gx_06.fm.(1.2)March 27, 2006The notation conventions use

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_06.fm.(1.2)March 27, 2006 Instruction TimingPage 215 of 3776.3 Timing ConsiderationsT

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction TimingPage 216 of 377gx_06.fm.(1.2)March 27, 2006The 750GX’s instruction-cach

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_06.fm.(1.2)March 27, 2006 Instruction TimingPage 217 of 3776.3.2.1 Cache ArbitrationW

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction TimingPage 218 of 377gx_06.fm.(1.2)March 27, 2006Figure 6-4. Instruction Flow

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_06.fm.(1.2)March 27, 2006 Instruction TimingPage 219 of 377Figure 6-5 on page 220 sho

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPage 22 of 377gx_preface.fm.(1.2)March 27, 2006Using This Manual with the Programming Env

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction TimingPage 220 of 377gx_06.fm.(1.2)March 27, 2006Figure 6-5. Instruction Timi

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_06.fm.(1.2)March 27, 2006 Instruction TimingPage 221 of 377The instruction timing for

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction TimingPage 222 of 377gx_06.fm.(1.2)March 27, 200610. In cycle 9, instruction

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_06.fm.(1.2)March 27, 2006 Instruction TimingPage 223 of 377Figure 6-6. Instruction Ti

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction TimingPage 224 of 377gx_06.fm.(1.2)March 27, 20066.3.2.4 L2 Cache Access Timi

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_06.fm.(1.2)March 27, 2006 Instruction TimingPage 225 of 377When the dispatch unit dis

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction TimingPage 226 of 377gx_06.fm.(1.2)March 27, 2006Performance features such as

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_06.fm.(1.2)March 27, 2006 Instruction TimingPage 227 of 377Figure 6-8 shows the remov

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction TimingPage 228 of 377gx_06.fm.(1.2)March 27, 2006In this example, the Branch

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_06.fm.(1.2)March 27, 2006 Instruction TimingPage 229 of 377does not write back its re

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_01.fm.(1.2)March 27,2006 PowerPC 750GX OverviewPage 23 of 3771. PowerPC 750GX Overvie

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction TimingPage 230 of 377gx_06.fm.(1.2)March 27, 2006Predicted Branch Timing Exam

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_06.fm.(1.2)March 27, 2006 Instruction TimingPage 231 of 3771. During clock cycle 0, i

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction TimingPage 232 of 377gx_06.fm.(1.2)March 27, 20062. In clock cycle 1, instruc

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_06.fm.(1.2)March 27, 2006 Instruction TimingPage 233 of 3776.4.5 Load/Store Unit Exec

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction TimingPage 234 of 377gx_06.fm.(1.2)March 27, 20066.4.7 Integer Store Gatherin

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_06.fm.(1.2)March 27, 2006 Instruction TimingPage 235 of 3776.5 Memory Performance Con

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction TimingPage 236 of 377gx_06.fm.(1.2)March 27, 20066.5.2 Effect of TLB Miss If

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_06.fm.(1.2)March 27, 2006 Instruction TimingPage 237 of 3776.6.1 Branch, Dispatch, an

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction TimingPage 238 of 377gx_06.fm.(1.2)March 27, 2006• Requirements for completin

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_06.fm.(1.2)March 27, 2006 Instruction TimingPage 239 of 377Move-from Special Purpose

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPowerPC 750GX OverviewPage 24 of 377gx_01.fm.(1.2)March 27,2006and data block-address-tra

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction TimingPage 240 of 377gx_06.fm.(1.2)March 27, 2006Table 6-6 lists condition re

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_06.fm.(1.2)March 27, 2006 Instruction TimingPage 241 of 377AND Immediate Shifted andi

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction TimingPage 242 of 377gx_06.fm.(1.2)March 27, 2006Table 6-8 shows latencies fo

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_06.fm.(1.2)March 27, 2006 Instruction TimingPage 243 of 377Floating Multiply-Subtract

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction TimingPage 244 of 377gx_06.fm.(1.2)March 27, 2006Table 6-9 shows load-and-sto

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_06.fm.(1.2)March 27, 2006 Instruction TimingPage 245 of 377Load Floating-Point Single

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction TimingPage 246 of 377gx_06.fm.(1.2)March 27, 2006Store Floating-Point Doubles

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_06.fm.(1.2)March 27, 2006 Instruction TimingPage 247 of 377Store Word with Update Ind

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorInstruction TimingPage 248 of 377gx_06.fm.(1.2)March 27, 2006

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_07.fm.(1.2)March 27, 2006 Signal DescriptionsPage 249 of 3777. Signal Descriptions Th

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_01.fm.(1.2)March 27,2006 PowerPC 750GX OverviewPage 25 of 3771.2 750GX Microprocessor

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorSignal DescriptionsPage 250 of 377gx_07.fm.(1.2)March 27, 20067.1 Signal ConfigurationFig

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_07.fm.(1.2)March 27, 2006 Signal DescriptionsPage 251 of 3777.2 Signal DescriptionsTh

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorSignal DescriptionsPage 252 of 377gx_07.fm.(1.2)March 27, 20067.2.1.2 Bus Grant (BG)—Inpu

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_07.fm.(1.2)March 27, 2006 Signal DescriptionsPage 253 of 377Address Bus Busy (ABB)—In

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorSignal DescriptionsPage 254 of 377gx_07.fm.(1.2)March 27, 20067.2.3 Address Transfer Sign

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_07.fm.(1.2)March 27, 2006 Signal DescriptionsPage 255 of 3777.2.3.2 Address-Bus Parit

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorSignal DescriptionsPage 256 of 377gx_07.fm.(1.2)March 27, 20067.2.4.1 Transfer Type (TT[0

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_07.fm.(1.2)March 27, 2006 Signal DescriptionsPage 257 of 377Table 7-2 describes the 6

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorSignal DescriptionsPage 258 of 377gx_07.fm.(1.2)March 27, 20067.2.4.2 Transfer Size (TSIZ

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_07.fm.(1.2)March 27, 2006 Signal DescriptionsPage 259 of 3777.2.4.3 Transfer Burst (T

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPowerPC 750GX OverviewPage 26 of 377gx_01.fm.(1.2)March 27,2006made available from the in

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorSignal DescriptionsPage 260 of 377gx_07.fm.(1.2)March 27, 20067.2.4.4 Cache Inhibit (CI)—

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_07.fm.(1.2)March 27, 2006 Signal DescriptionsPage 261 of 3777.2.4.6 Global (GBL)The g

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorSignal DescriptionsPage 262 of 377gx_07.fm.(1.2)March 27, 20067.2.5 Address Transfer Term

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_07.fm.(1.2)March 27, 2006 Signal DescriptionsPage 263 of 3777.2.5.2 Address Retry (AR

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorSignal DescriptionsPage 264 of 377gx_07.fm.(1.2)March 27, 2006Address Retry (ARTRY)—Input

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_07.fm.(1.2)March 27, 2006 Signal DescriptionsPage 265 of 3777.2.6.2 Data-Bus Write-On

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorSignal DescriptionsPage 266 of 377gx_07.fm.(1.2)March 27, 2006Data Bus Busy (DBB)—Input7.

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_07.fm.(1.2)March 27, 2006 Signal DescriptionsPage 267 of 377Data Bus (DH[0–31], DL[0–

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorSignal DescriptionsPage 268 of 377gx_07.fm.(1.2)March 27, 2006Data-Bus Parity (DP[0–7])—I

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_07.fm.(1.2)March 27, 2006 Signal DescriptionsPage 269 of 3777.2.8.2 Data Retry (DRTRY

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_01.fm.(1.2)March 27,2006 PowerPC 750GX OverviewPage 27 of 377– Retires as many as two

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorSignal DescriptionsPage 270 of 377gx_07.fm.(1.2)March 27, 20067.2.9 System Status Signals

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_07.fm.(1.2)March 27, 2006 Signal DescriptionsPage 271 of 3777.2.9.3 Machine-Check Int

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorSignal DescriptionsPage 272 of 377gx_07.fm.(1.2)March 27, 20067.2.10 Reset SignalsThere a

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_07.fm.(1.2)March 27, 2006 Signal DescriptionsPage 273 of 3777.2.11 Processor Status S

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorSignal DescriptionsPage 274 of 377gx_07.fm.(1.2)March 27, 20067.2.11.4 Time Base Enable (

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_07.fm.(1.2)March 27, 2006 Signal DescriptionsPage 275 of 3777.2.13 I/O Voltage Select

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorSignal DescriptionsPage 276 of 377gx_07.fm.(1.2)March 27, 20067.2.14.3 L1_TSTCLK7.2.14.4

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_07.fm.(1.2)March 27, 2006 Signal DescriptionsPage 277 of 3777.2.15.1 System Clock (SY

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorSignal DescriptionsPage 278 of 377gx_07.fm.(1.2)March 27, 20067.2.15.4 PLL Range (PLL_RNG

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_08.fm.(1.2)March 27, 2006 Bus Interface OperationPage 279 of 3778. Bus Interface Oper

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPowerPC 750GX OverviewPage 28 of 377gx_01.fm.(1.2)March 27,2006• TLBs are hardware-reload

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorBus Interface OperationPage 280 of 377gx_08.fm.(1.2)March 27, 20068.1 Bus Interface Overv

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_08.fm.(1.2)March 27, 2006 Bus Interface OperationPage 281 of 377In addition to the lo

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorBus Interface OperationPage 282 of 377gx_08.fm.(1.2)March 27, 2006Cache lines are selecte

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_08.fm.(1.2)March 27, 2006 Bus Interface OperationPage 283 of 377one, two, or eight be

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorBus Interface OperationPage 284 of 377gx_08.fm.(1.2)March 27, 20068.2 Memory-Access Proto

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_08.fm.(1.2)March 27, 2006 Bus Interface OperationPage 285 of 377Data tenure:The 750GX

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorBus Interface OperationPage 286 of 377gx_08.fm.(1.2)March 27, 20068.2.2 Miss-under-Miss T

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_08.fm.(1.2)March 27, 2006 Bus Interface OperationPage 287 of 377data cache. If there

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorBus Interface OperationPage 288 of 377gx_08.fm.(1.2)March 27, 2006The BIU has both AR buf

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_08.fm.(1.2)March 27, 2006 Bus Interface OperationPage 289 of 377Load multiple and loa

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_01.fm.(1.2)March 27,2006 PowerPC 750GX OverviewPage 29 of 3771.2.1 Instruction FlowAs

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorBus Interface OperationPage 290 of 377gx_08.fm.(1.2)March 27, 20068.2.2.2 Speculative Loa

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_08.fm.(1.2)March 27, 2006 Bus Interface OperationPage 291 of 377External arbiters mus

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorBus Interface OperationPage 292 of 377gx_08.fm.(1.2)March 27, 2006System designers should

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_08.fm.(1.2)March 27, 2006 Bus Interface OperationPage 293 of 377Figure 8-8. Address-B

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorBus Interface OperationPage 294 of 377gx_08.fm.(1.2)March 27, 20068.3.2.1 Address-Bus Par

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_08.fm.(1.2)March 27, 2006 Bus Interface OperationPage 295 of 377The basic coherency s

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorBus Interface OperationPage 296 of 377gx_08.fm.(1.2)March 27, 20068.3.2.4 Effect of Align

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_08.fm.(1.2)March 27, 2006 Bus Interface OperationPage 297 of 377The 750GX supports mi

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorBus Interface OperationPage 298 of 377gx_08.fm.(1.2)March 27, 2006Effect of Alignment in

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_08.fm.(1.2)March 27, 2006 Bus Interface OperationPage 299 of 377Misaligned data trans

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessor750gx_umTOC.fm.(1.2)March 27, 2006 Page 3 of 377 List of Figures ...

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPowerPC 750GX OverviewPage 30 of 377gx_01.fm.(1.2)March 27,2006are flushed from the proce

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorBus Interface OperationPage 300 of 377gx_08.fm.(1.2)March 27, 20068.3.2.5 Alignment of Ex

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_08.fm.(1.2)March 27, 2006 Bus Interface OperationPage 301 of 377address tenures occur

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorBus Interface OperationPage 302 of 377gx_08.fm.(1.2)March 27, 2006A qualified data-bus gr

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_08.fm.(1.2)March 27, 2006 Bus Interface OperationPage 303 of 3778.4.2 Data-Bus Write-

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorBus Interface OperationPage 304 of 377gx_08.fm.(1.2)March 27, 2006(or only) data beat, th

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_08.fm.(1.2)March 27, 2006 Bus Interface OperationPage 305 of 377Normal termination of

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorBus Interface OperationPage 306 of 377gx_08.fm.(1.2)March 27, 2006For read bursts, DRTRY

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_08.fm.(1.2)March 27, 2006 Bus Interface OperationPage 307 of 377Figure 8-15 shows the

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorBus Interface OperationPage 308 of 377gx_08.fm.(1.2)March 27, 2006Note: TEA generates a

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_08.fm.(1.2)March 27, 2006 Bus Interface OperationPage 309 of 3778.5 Timing ExamplesTh

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_01.fm.(1.2)March 27,2006 PowerPC 750GX OverviewPage 31 of 377For a more detailed disc

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorBus Interface OperationPage 310 of 377gx_08.fm.(1.2)March 27, 2006Figure 8-17. Fastest Si

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_08.fm.(1.2)March 27, 2006 Bus Interface OperationPage 311 of 377Figure 8-18 illustrat

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorBus Interface OperationPage 312 of 377gx_08.fm.(1.2)March 27, 2006Figure 8-19 shows three

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_08.fm.(1.2)March 27, 2006 Bus Interface OperationPage 313 of 377Figure 8-20 shows dat

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorBus Interface OperationPage 314 of 377gx_08.fm.(1.2)March 27, 2006Figure 8-21 shows the u

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_08.fm.(1.2)March 27, 2006 Bus Interface OperationPage 315 of 377Figure 8-22 shows the

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorBus Interface OperationPage 316 of 377gx_08.fm.(1.2)March 27, 20068.6 Optional Bus Config

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_08.fm.(1.2)March 27, 2006 Bus Interface OperationPage 317 of 377An example of a two-b

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorBus Interface OperationPage 318 of 377gx_08.fm.(1.2)March 27, 2006The 750GX selects 64-bi

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_08.fm.(1.2)March 27, 2006 Bus Interface OperationPage 319 of 3778.7 Processor State S

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPowerPC 750GX OverviewPage 32 of 377gx_01.fm.(1.2)March 27,20061.2.2.3 Load/Store Unit (L

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorBus Interface OperationPage 320 of 377gx_08.fm.(1.2)March 27, 20068.9 Using Data-Bus Writ

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_08.fm.(1.2)March 27, 2006 Bus Interface OperationPage 321 of 377Note that although th

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorBus Interface OperationPage 322 of 377gx_08.fm.(1.2)March 27, 2006

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_09.fm.(1.2)March 27, 2006 L2 CachePage 323 of 3779. L2 CacheThis chapter describes th

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorL2 CachePage 324 of 377gx_09.fm.(1.2)March 27, 2006If multiple read requests from the L1

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_09.fm.(1.2)March 27, 2006 L2 CachePage 325 of 377Whenever a way in the set is referen

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorL2 CachePage 326 of 377gx_09.fm.(1.2)March 27, 2006110 x011 11x1 xxx0 31x1 xx01 2101 0x11

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_09.fm.(1.2)March 27, 2006 L2 CachePage 327 of 377Figure 9-1. L2 Cache 60x Bus 64-bitB

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorL2 CachePage 328 of 377gx_09.fm.(1.2)March 27, 2006The execution of the Store Word Condit

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_09.fm.(1.2)March 27, 2006 L2 CachePage 329 of 3779.3 L2 Cache Control Register (L2CR)

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_01.fm.(1.2)March 27,2006 PowerPC 750GX OverviewPage 33 of 377The 750GX supports the f

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorL2 CachePage 330 of 377gx_09.fm.(1.2)March 27, 20069.6 L2 Cache Used as On-Chip MemoryThe

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_09.fm.(1.2)March 27, 2006 L2 CachePage 331 of 3779.6.1.1 Loading the Locked L2 CacheC

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorL2 CachePage 332 of 377gx_09.fm.(1.2)March 27, 2006The dcbz instruction has no effect on

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_09.fm.(1.2)March 27, 2006 L2 CachePage 333 of 3779.8.2 L2 Cache TestingA typical test

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorL2 CachePage 334 of 377gx_09.fm.(1.2)March 27, 2006

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_10.fm.(1.2)March 27, 2006 Power and Thermal ManagementPage 335 of 37710. Power and Th

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPower and Thermal ManagementPage 336 of 377gx_10.fm.(1.2)March 27, 2006Figure 10-1. 750GX

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_10.fm.(1.2)March 27, 2006 Power and Thermal ManagementPage 337 of 37710.2.1 Power Man

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPower and Thermal ManagementPage 338 of 377gx_10.fm.(1.2)March 27, 2006750GX will then be

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_10.fm.(1.2)March 27, 2006 Power and Thermal ManagementPage 339 of 37710.2.1.4 Sleep M

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPowerPC 750GX OverviewPage 34 of 377gx_01.fm.(1.2)March 27,2006written into an 8-word buf

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPower and Thermal ManagementPage 340 of 377gx_10.fm.(1.2)March 27, 200610.2.2 Power Manag

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_10.fm.(1.2)March 27, 2006 Power and Thermal ManagementPage 341 of 377Note: If the PL

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPower and Thermal ManagementPage 342 of 377gx_10.fm.(1.2)March 27, 200610.3.3 Dual PLL Im

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_10.fm.(1.2)March 27, 2006 Power and Thermal ManagementPage 343 of 37710.4 Thermal Ass

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPower and Thermal ManagementPage 344 of 377gx_10.fm.(1.2)March 27, 2006The TAU provides t

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_10.fm.(1.2)March 27, 2006 Power and Thermal ManagementPage 345 of 37710.4.2.1 TAU Sin

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPower and Thermal ManagementPage 346 of 377gx_10.fm.(1.2)March 27, 200610.4.2.2 TAU Dual-

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_10.fm.(1.2)March 27, 2006 Power and Thermal ManagementPage 347 of 37710.4.2.4 Power S

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPower and Thermal ManagementPage 348 of 377gx_10.fm.(1.2)March 27, 2006The bit field sett

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_11.fm.(1.2)March 27, 2006 Performance Monitor and System Related FeaturesPage 349 of

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_01.fm.(1.2)March 27,2006 PowerPC 750GX OverviewPage 35 of 377instruction-cache flash

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPerformance Monitor and System Related FeaturesPage 350 of 377gx_11.fm.(1.2)March 27, 200

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_11.fm.(1.2)March 27, 2006 Performance Monitor and System Related FeaturesPage 351 of

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPerformance Monitor and System Related FeaturesPage 352 of 377gx_11.fm.(1.2)March 27, 200

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_11.fm.(1.2)March 27, 2006 Performance Monitor and System Related FeaturesPage 353 of

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPerformance Monitor and System Related FeaturesPage 354 of 377gx_11.fm.(1.2)March 27, 200

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_11.fm.(1.2)March 27, 2006 Performance Monitor and System Related FeaturesPage 355 of

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPerformance Monitor and System Related FeaturesPage 356 of 377gx_11.fm.(1.2)March 27, 200

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_11.fm.(1.2)March 27, 2006 Performance Monitor and System Related FeaturesPage 357 of

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPerformance Monitor and System Related FeaturesPage 358 of 377gx_11.fm.(1.2)March 27, 200

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_11.fm.(1.2)March 27, 2006 Performance Monitor and System Related FeaturesPage 359 of

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPowerPC 750GX OverviewPage 36 of 377gx_01.fm.(1.2)March 27,2006The address and data buses

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPerformance Monitor and System Related FeaturesPage 360 of 377gx_11.fm.(1.2)March 27, 200

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_11.fm.(1.2)March 27, 2006 Performance Monitor and System Related FeaturesPage 361 of

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPerformance Monitor and System Related FeaturesPage 362 of 377gx_11.fm.(1.2)March 27, 200

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_11.fm.(1.2)March 27, 2006 Performance Monitor and System Related FeaturesPage 363 of

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPerformance Monitor and System Related FeaturesPage 364 of 377gx_11.fm.(1.2)March 27, 200

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_acronyms.fm.(1.2)March 27, 2006 Acronyms and AbbreviationsPage 365 of 377Acronyms and

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorAcronyms and AbbreviationsPage 366 of 377gx_acronyms.fm.(1.2)March 27, 2006FPR Floating

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_acronyms.fm.(1.2)March 27, 2006 Acronyms and AbbreviationsPage 367 of 377NaN not a n

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorAcronyms and AbbreviationsPage 368 of 377gx_acronyms.fm.(1.2)March 27, 2006THRM n Therma

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessor750gx_umIX.fm.(1.2)March 27, 2006 IndexPage 369 of 377IndexAAACK (address acknowledge) si

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_01.fm.(1.2)March 27,2006 PowerPC 750GX OverviewPage 37 of 377The system interface sup

User’s Manual IBM PowerPC 750GX and 750GL RISC MicroprocessorIndexPage 370 of 377750gx_umIX.fm.(1.2)March 27, 2006L2 interfacecache global invalidatio

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessor750gx_umIX.fm.(1.2)March 27, 2006 IndexPage 371 of 377register settingsMSR, 162SRR0/SRR1,

User’s Manual IBM PowerPC 750GX and 750GL RISC MicroprocessorIndexPage 372 of 377750gx_umIX.fm.(1.2)March 27, 2006integer, 99byte reverse instructions

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessor750gx_umIX.fm.(1.2)March 27, 2006 IndexPage 373 of 377OOEAexception mechanism, 151memory

User’s Manual IBM PowerPC 750GX and 750GL RISC MicroprocessorIndexPage 374 of 377750gx_umIX.fm.(1.2)March 27, 2006DABR, 62DAR, 61DEC, 62DSISR, 61EAR,

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessor750gx_umIX.fm.(1.2)March 27, 2006 IndexPage 375 of 377Stall, definition, 211Static branch

User’s Manual IBM PowerPC 750GX and 750GL RISC MicroprocessorIndexPage 376 of 377750gx_umIX.fm.(1.2)March 27, 2006

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_revlog.fm.(1.2)March 27, 2006 Revision LogPage 377 of 377Revision LogRevision Date Co

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPowerPC 750GX OverviewPage 38 of 377gx_01.fm.(1.2)March 27,2006Note: A bar over a signal

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_01.fm.(1.2)March 27,2006 PowerPC 750GX OverviewPage 39 of 377Signal functionality is

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPage 4 of 377750gx_umTOC.fm.(1.2)March 27, 20062. Programming Model ...

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPowerPC 750GX OverviewPage 40 of 377gx_01.fm.(1.2)March 27,20061.2.9 Clocking The 750GX r

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_01.fm.(1.2)March 27,2006 PowerPC 750GX OverviewPage 41 of 377The PowerPC Architecture

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPowerPC 750GX OverviewPage 42 of 377gx_01.fm.(1.2)March 27,20061.4 PowerPC Registers and

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_01.fm.(1.2)March 27,2006 PowerPC 750GX OverviewPage 43 of 377The OEA defines numerous

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPowerPC 750GX OverviewPage 44 of 377gx_01.fm.(1.2)March 27,2006Table 1-3 describes the SP

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_01.fm.(1.2)March 27,2006 PowerPC 750GX OverviewPage 45 of 3771.5 Instruction SetAll P

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPowerPC 750GX OverviewPage 46 of 377gx_01.fm.(1.2)March 27,2006– Translation-lookaside-bu

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_01.fm.(1.2)March 27,2006 PowerPC 750GX OverviewPage 47 of 3771.5.2 750GX Microprocess

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPowerPC 750GX OverviewPage 48 of 377gx_01.fm.(1.2)March 27,20061.7 Exception ModelThe fol

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_01.fm.(1.2)March 27,2006 PowerPC 750GX OverviewPage 49 of 377The PowerPC Architecture

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessor750gx_umTOC.fm.(1.2)March 27, 2006 Page 5 of 3772.3.6.1 System Linkage Instructions—OEA

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPowerPC 750GX OverviewPage 50 of 377gx_01.fm.(1.2)March 27,2006Table 1-5. Exceptions and

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_01.fm.(1.2)March 27,2006 PowerPC 750GX OverviewPage 51 of 3771.8 Memory ManagementThe

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPowerPC 750GX OverviewPage 52 of 377gx_01.fm.(1.2)March 27,20061.8.2 750GX Microprocesso

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_01.fm.(1.2)March 27,2006 PowerPC 750GX OverviewPage 53 of 377Note: Figure 1-5 does n

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPowerPC 750GX OverviewPage 54 of 377gx_01.fm.(1.2)March 27,2006• The execution units proc

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_01.fm.(1.2)March 27,2006 PowerPC 750GX OverviewPage 55 of 377In addition, the 750GX a

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPowerPC 750GX OverviewPage 56 of 377gx_01.fm.(1.2)March 27,2006The TAU is controlled thro

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_02.fm.(1.2)March 27, 2006 Programming ModelPage 57 of 3772. Programming ModelThis cha

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorProgramming ModelPage 58 of 377gx_02.fm.(1.2)March 27, 2006Figure 2-1. PowerPC 750GX Micr

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_02.fm.(1.2)March 27, 2006 Programming ModelPage 59 of 377The PowerPC UISA registers a

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPage 6 of 377750gx_umTOC.fm.(1.2)March 27, 20064.2 Exception Recognition and Priorities .

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorProgramming ModelPage 60 of 377gx_02.fm.(1.2)March 27, 2006“PowerPC Register Set” of the

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_02.fm.(1.2)March 27, 2006 Programming ModelPage 61 of 377– Memory-management register

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorProgramming ModelPage 62 of 377gx_02.fm.(1.2)March 27, 2006Register 1 (SRR1)” in Chapter

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_02.fm.(1.2)March 27, 2006 Programming ModelPage 63 of 377– Hardware-Implementation-De

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorProgramming ModelPage 64 of 377gx_02.fm.(1.2)March 27, 20062.1.2 PowerPC 750GX-Specific R

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_02.fm.(1.2)March 27, 2006 Programming ModelPage 65 of 3772.1.2.2 Hardware-Implementat

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorProgramming ModelPage 66 of 377gx_02.fm.(1.2)March 27, 20069NAP2Nap mode enable. Operates

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_02.fm.(1.2)March 27, 2006 Programming ModelPage 67 of 37718 ILOCKInstruction-cache lo

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorProgramming ModelPage 68 of 377gx_02.fm.(1.2)March 27, 200622 SPDSpeculative cache access

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_02.fm.(1.2)March 27, 2006 Programming ModelPage 69 of 37729 BHTBranch history table e

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessor750gx_umTOC.fm.(1.2)March 27, 2006 Page 7 of 3775.1.8 MMU Instructions and Register Summ

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorProgramming ModelPage 70 of 377gx_02.fm.(1.2)March 27, 20062.1.2.3 Hardware-Implementatio

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_02.fm.(1.2)March 27, 2006 Programming ModelPage 71 of 3772.1.2.4 Hardware-Implementat

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorProgramming ModelPage 72 of 377gx_02.fm.(1.2)March 27, 20062.1.2.5 Performance-Monitor Re

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_02.fm.(1.2)March 27, 2006 Programming ModelPage 73 of 377User Monitor Mode Control Re

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorProgramming ModelPage 74 of 377gx_02.fm.(1.2)March 27, 2006Monitor Mode Control Register

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_02.fm.(1.2)March 27, 2006 Programming ModelPage 75 of 377The following tables list th

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorProgramming ModelPage 76 of 377gx_02.fm.(1.2)March 27, 2006User Sampled Instruction Addre

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_02.fm.(1.2)March 27, 2006 Programming ModelPage 77 of 3772.1.3 Instruction Cache Thro

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorProgramming ModelPage 78 of 377gx_02.fm.(1.2)March 27, 20062.1.4 Thermal-Management Regis

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_02.fm.(1.2)March 27, 2006 Programming ModelPage 79 of 3772.1.4.2 Thermal-Management R

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorPage 8 of 377750gx_umTOC.fm.(1.2)March 27, 20066.6.1.3 Completion-Unit Resource Requireme

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorProgramming ModelPage 80 of 377gx_02.fm.(1.2)March 27, 20062.1.4.3 Thermal-Management Reg

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_02.fm.(1.2)March 27, 2006 Programming ModelPage 81 of 3772.1.5 L2 Cache Control Regis

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorProgramming ModelPage 82 of 377gx_02.fm.(1.2)March 27, 20062.2 Operand ConventionsThis se

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_02.fm.(1.2)March 27, 2006 Programming ModelPage 83 of 3772.2.3 Floating-Point Operand

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorProgramming ModelPage 84 of 377gx_02.fm.(1.2)March 27, 20062.2.3.3 Time-Critical Floating

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_02.fm.(1.2)March 27, 2006 Programming ModelPage 85 of 377Table 2-6 summarizes the mod

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorProgramming ModelPage 86 of 377gx_02.fm.(1.2)March 27, 20062.3 Instruction Set SummaryThi

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_02.fm.(1.2)March 27, 2006 Programming ModelPage 87 of 377that the architecture specif

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorProgramming ModelPage 88 of 377gx_02.fm.(1.2)March 27, 20062.3.1.3 Illegal Instruction Cl

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_02.fm.(1.2)March 27, 2006 Programming ModelPage 89 of 3772.3.1.4 Reserved Instruction

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessor750gx_umTOC.fm.(1.2)March 27, 2006 Page 9 of 3777.2.11.4 Time Base Enable (TBEN)—Input

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorProgramming ModelPage 90 of 377gx_02.fm.(1.2)March 27, 20062.3.2.3 Effective Address Calc

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_02.fm.(1.2)March 27, 2006 Programming ModelPage 91 of 377For example, if the mtmsr se

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorProgramming ModelPage 92 of 377gx_02.fm.(1.2)March 27, 2006Summary” in the PowerPC Microp

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_02.fm.(1.2)March 27, 2006 Programming ModelPage 93 of 377Although there is no Subtrac

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorProgramming ModelPage 94 of 377gx_02.fm.(1.2)March 27, 2006Integer Logical InstructionsTh

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_02.fm.(1.2)March 27, 2006 Programming ModelPage 95 of 377The integer rotate instructi

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorProgramming ModelPage 96 of 377gx_02.fm.(1.2)March 27, 2006Double-precision arithmetic in

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_02.fm.(1.2)March 27, 2006 Programming ModelPage 97 of 377Examples of uses of these in

User’s ManualIBM PowerPC 750GX and 750GL RISC MicroprocessorProgramming ModelPage 98 of 377gx_02.fm.(1.2)March 27, 2006Note: The PowerPC Architectur

User’s ManualIBM PowerPC 750GX and 750GL RISC Microprocessorgx_02.fm.(1.2)March 27, 2006 Programming ModelPage 99 of 377Little Endian Misaligned Acc