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Northbridge or host bridge for PowerPC CPU is an Integrated Circuit (IC) for interfacing PowerPC CPU with memory, and Southbridge IC. Some Northbridge also provide interface for Accelerated Graphics Ports (AGP) bus, Peripheral Component Interconnect (PCI), PCI-X, PCI Express, or Hypertransport bus.
Northbridge chips are most commonly found on X86-based PCs, but they can also be found on other platforms, such as the PowerPC platform. A common example of a northbridge on a PowerPC platform is in Apple's older PowerPC-based computers like the iMac G5, which utilized an IBM CPC945 Northbridge chip.
The new instruction set architecture was called Power ISA and merged the PowerPC v.2.02 from the POWER5 with the PowerPC Book E specification from Freescale as well as some related technologies like the Vector-Media Extensions known under the brand name AltiVec (also called VMX by IBM) and hardware virtualization. This new ISA was called 'Power ...
Common Hardware Reference Platform (CHRP) is a standard system architecture for PowerPC-based computer systems published jointly by IBM and Apple in 1995. Like its predecessor PReP, it was conceptualized as a design to allow various operating systems to run on an industry standard hardware platform, and specified the use of Open Firmware and RTAS for machine abstraction purposes.
Apple, wishing to seamlessly transition its Macintosh computers to PowerPC, found this to be particularly problematic. As it appeared no one was particularly happy with PReP, a new standard, the Common Hardware Reference Platform (CHRP), was developed and published in late 1995, incorporating the elements of both PReP and the Power Macintosh ...
Same as host No host OS Windows XP, 2003 Server (x86-64 only), Linux, Solaris GPL version 3: SVISTA 2004 Serenity Systems International: x86 x86 Windows, OS/2, Linux Windows, Linux, OS/2, BSD Proprietary: TRANGO: TRANGO Virtual Processors, Grenoble, France: ARM, XScale, MIPS, PowerPC Paravirtualized ARM, MIPS, PowerPC
PearPC is a PowerPC platform emulator capable of running many PowerPC operating systems, including pre-Intel versions of Mac OS X, Darwin, and Linux on x86 hardware. [1] It is released under the GNU General Public License (GPL). It can be used on Windows, Linux, FreeBSD and other systems based on POSIX-X11.
To Apple, the performance of the PowerPC was a bright spot in the face of increased competition from Windows 95 and Windows NT-based PCs. With the cancellation of Workplace OS, the general PowerPC platform (especially AIM's Common Hardware Reference Platform ) was instead seen as a hardware-only compromise to run many operating systems one at a ...