Revision as of 05:33, 19 January 2006 by SHARD
This dictionary defines some terms that are used in the OS X on x86 world.
- A normal x86 PC (white box/gray box) running OSx86.
- A Macintosh computer containing an Intel processor.
- Physical Address Extension - An extension originally implemented by Intel first found in the Pentium Pro processor that allows your CPU to address more than 4 GB of physical memory. This is a requirement for the 10.4.3 build, and seems to be missing in a lot of the Pentium M processors.
- PowerPC (or PPC):
- The processor design used in all of Apple's current Macs. This CPU was developed in a collaborative effort between Apple, IBM, and Motorola and has been the main desktop rival to traditional x86 CPUs since the mid-1990s.
- The first version of the SSE instructions. It is used in the Pentium III (and Pentium III-based Celeron) and the AMD Athlon XP. SSE has been largely replaced by SSE2 and 3. Mac OS X will not run on SSE-only systems.
- A much improved version of Intel's SSE instruction set. SSE2 is supported by the Intel Pentium 4 (and Pentium 4-based Celeron), AMD Athlon 64/AMD Opteron, and Intel Xeon Willamette Series CPUs.
- An extension to SSE2. SSE3 is supported in the revision E Athlon 64 (released in April 2005), Prescott Pentium 4 and Celeron D (introduced in early 2004). Wikipedia has a more exhaustive list.
- White Box/Gray Box:
- Normal x86 PC.
- The processor type used in almost all PCs today. AMD, Intel, Cyrix, Transmeta, and most other CPUs are all compatible with this standard.
Software and Operating Systems
- Dev DVD or Developer DVD:
- The original OSx86 DVD released to Apple developers.
- The rumored Apple internal project to keep OSx86 in sync with OS X for PowerPC. See OSx86 History for more.
- Programs that do not require Rosetta to run on OSx86 PCs. See here for examples.
- The operating system, Mac OS X, for an x86 machine.
- Quartz Extreme:
- Starting with Mac OS X v10.2, Quartz Compositor was extended by Quartz Extreme, which uses OpenGL to render screen displays faster by presenting them as textures within a 3D OpenGL context. This permits faster compositing of screen images using 3D hardware acceleration. To use Quartz Extreme, the Macintosh must have an AGP graphics card with support for arbitrary texture dimensions and a minimum of 16 MB of VRAM. In practice, this means either any nVidia, an ATI Radeon, or better.
- Apple's official emulation layer. It allows PPC Mac applications to run on OSx86. Rosetta only runs on SSE3 or patched SSE2 computers.
- An application for Windows and Linux that allows people to create virtual computers, each running their own OS and software.
- The Knowledge Base is a great source of information about many of these terms.