ppc powerpc

digits is 0x12, 0x11), as in the second figure.This also led to the computer world of the big and small end of the dispute, different CPU vendors have not reached a consensus:X86,mos Technology 6502,z80,vax,pdp-11 and other processors are little endian. · Motorola 6800,motorola 68000,powerpc 970,system/370,sparc (except for V9) processors such as big endian. · ARM, PowerPC (except

orderThe data transmitted on the network is a byte stream, for a multi-byte numeric value, in the network transmission, the first pass which bytes? That is, when the receiver receives the first byte, it will be a high-byte or low-byte processing, is a more meaningful problem; The UDP/TCP/IP protocol provides that the first byte received is treated as a high byte, which requires that the first byte sent by the sending side is a high byte, whereas the first byte sent when the sender sends the dat

want to learn something."What hardware engineers need to learn 1) basic Design specifications 2) CPU basic knowledge, architecture, performance and selection Guidance 3) MOTOROLA's PowerPC series basic knowledge, performance and Selection Guide 4) network processor (INTEL, MOTOROLA, IBM) basic knowledge, Architecture, performance and Selection 5) basic knowledge and performance of common bus 6) detailed performance introduction of various memory, des

to be relaxed, resulting in the relaxed memory order (RMO) and PowerPC memory models. Note that the processor's relaxation of read/write operations is premised on the absence of data dependencies between two operations (because the processor adheres to the as-if-serial semantics, the processor does not reorder the two memory operations that have data dependencies).The following table shows the details of the common processor memory model:

Generally, all we encounter is a small-end scenario. A typical X86 processor is a small-end scenario.However, many powerpc processors can be configured in the big-end mode or small-end mode. Therefore, the previous code is often run well, to the new board, or board configurationIf a change occurs, the result is incorrect and debugging is difficult. Because it is not considered wrong at all.The following is an issue that we have detected after a long t

exceptions of the system, such as fast interruption, switch interruption, clock interruption, software interruption, prefetch suspension, and undefined commands; start. S is the first file executed during U-boot startup. It mainly sets the system stack and the working style to lay the foundation for entering the C program. Disk: The partition processing code of the disk driver, DOC: document. Drivers: general-purpose device drivers, such as various NICs, flash supporting CFI, serial ports, and

instruction set (CISC) systems1. Simplified instruction set (reduced instruction set computer, RISC)In this kind of CPU design, the micro instruction set is more concise, the execution time of each instruction is very short, the completion of the action is very simple, the execution efficiency of the instruction is better; but to do something complex, it is done by multiple instructions . Common RISC Micro-instruction set CPU mainly such as Sun Company's SPARC series , IBM Company's Power Archi

first, Linux and AixOriginally designed for the x86 architecture, Linux now supports a variety of hardware platforms. such as: PowerPC, s/390, SPARC, Alpha, and other embedded systems. PowerPC and s/390 are IBM, SAPRC is Sun, Alpha is Dec and now HP. But the Linux version running on the inter chip is not available on the pseries, and Linux running on the pseries is designed specifically for the

to Linux" (developerworks,2005 year February) for tips and tricks on porting large multithreaded applications to Linux. "Porting Intel applications to a bit Linux PowerPC" discusses some of the issues to consider when porting Linux from IA32 to PowerPC. Linux Online (linux.org) Linux distributions site provides a wealth of information about the release, including distributions on 64-bit s

Although many high-end games are competing to use exaggerated styling, composite materials to highlight the design of the fuselage, but it is gradually bored. Cyber PowerPC has a good reputation in the gaming PC field, but its "Fangbook" game series is quite different from the previous product, with a lot of attractive hardware and a nice chassis, and the charm to stop and watch. The latest Fangbook X7 series has three models, including x7-100,x7-200

read-read operations in the program, resulting in the relaxed memory Order memory model (RMO) and the PowerPC memory model. Note that the processor's relaxation of read/write operations is premised on the absence of data dependencies between two operations (since the processor adheres to as-if-serial semantics, the processor does not reorder two memory operations that have data dependencies). The following table shows the detailed features of the c

-------------------------------------------------------------------Linux2.6.28/arch/powerpc/kernel/of_platform.cstruct Bus_type Of_platform_bus_type = {. uevent = Of_device_uevent,};Export_symbol (Of_platform_bus_type);static int __init of_bus_driver_init (void){Return Of_bus_type_init (of_platform_bus_type, "of_platform");}Postcore_initcall (Of_bus_driver_init);Of_platform_bus_type Bus registration is complete.The/sys/bus/directory will now have Of_p

Since 1998, under the leadership of CEO Steve Jobs, Apple has created "fudge" imac G3, "table lamp" imac G4 and "frame" G5. With its beautiful appearance and powerful performance, imac has quickly won the affection of consumers and even changed the way of life of the whole human society.Yesterday at the California San Jose Theatre, Apple released a new generation of imac machines. If there is anything special about this new product, it is not "thin". Although the fuselage is the thinnest place o

to be relaxed, resulting in the relaxed memory order (RMO) and PowerPC memory models. Note that the processor's relaxation of read/write operations is premised on the absence of data dependencies between two operations (because the processor adheres to the as-if-serial semantics, the processor does not reorder the two memory operations that have data dependencies).The following table shows the details of the common processor memory model:

pointer to the integer type, as shown below:Printf ("The hex value of % f is % x", f, * (int *) f );Back to TopConclusionMainstream hardware vendors have recently expanded their 64-bit products because the 64-bit platform provides better performance, value, and scalability. The 32-bit system restrictions, especially the 4 GB virtual memory ceiling, have greatly stimulated many companies to consider migrating to the 64-bit platform. Understanding how to port an application to a 64-bit architect

more details about various 64-bit programming models and the LP64 debate. On Wikipedia, learn about the 2038 issue of 32-bit systems. Read "porting enterprise applications from UNIX to Linux" (developerWorks, February 2005) to learn about tips and tips for porting large multi-threaded applications to Linux. "Porting Intel applications to 64-bit Linux PowerPC" discusses some issues to consider when Porting Linux from IA32 to

configurations Dual 1.8GHz dual 2GHz dual 2.5GHz lipeng m9454ll/a m9455ll/a M9457 ll/a mapabc dual 1.8GHz PowerPC G5 dual 2GHz PowerPC G5 dual 2.5GHz PowerPC G5 Map business Card 900MHz per processor 1GHz per processor 1.25GHz per processor Tu

upstream stable Linux kernel. the mainline v3.0 to v3.2 stable series update brings a number of new features. some highlights include: Ext4 gains support for larger base block sizesBtrfs has more work addressing data integrity issuesDevice mapper gains thin provisioning and recursive snapshotsMore work to improve performance under high writeback loadNetworking improvements for congested networksExt3 moves to using filesystem barriersMemory allocator improvementsVFS scalability improvementsA new

quite complex. The problem arises from internal policies, preferences, issues left behind by other schemes, lack of comprehensive or accurate information, and costs-the overall product cost needs to be taken into account, not just the CPU itself. Sometimes, once you take into account the bus logic and latency required for the CPU to use other peripheral devices, the fast and cheap CPU may also become expensive. To calculate the CPU speed required for any given project, we must first realistical

would return SRC with the byte order SWA pped; Otherwise it would return SRC unmodified.This function is introduced in Qt 4.3.T Qfromlittleendian (const UCHAR * src)Reads a Little-endian number from memory location, SRC and returns the number in the host byte order representation. On CPU architectures where the host byte order was Big-endian (such as PowerPC) this would swap the byte order; Otherwise it would just read from SRC.Note:template type T c