There are four major supported &architecture; subarchitectures: PMac (Power-Macintosh), PReP, APUS (Amiga Power-UP System), and CHRP machines. Each subarchitecture has its own boot methods. In addition, there are four different kernel flavours, supporting different CPU variants. Ports to other &architecture; architectures, such as the Be-Box and MBX architecture, are underway but not yet supported by Debian. We may have a 64-bit port in the future. There are four flavours of the powerpc kernel in Debian, based on the CPU type: powerpc Most systems use this kernel flavour, which supports the PowerPC 601, 603, 604, 740, 750, and 7400 processors. All Apple Power Macintosh systems up to and including the G4 use one of these processors. power3 The POWER3 processor is used in older IBM 64-bit server systems: known models include the IntelliStation POWER Model 265, the pSeries 610 and 640, and the RS/6000 7044-170, 7043-260, and 7044-270. power4 The POWER4 processor is used in more recent IBM 64-bit server systems: known models include the pSeries 615, 630, 650, 655, 670, and 690. The Apple G5 is also based on the POWER4 architecture, and uses this kernel flavour. apus This kernel flavour supports the Amiga Power-UP System. Apple (and briefly a few other manufacturers — Power Computing, for example) makes a series of Macintosh computers based on the PowerPC processor. For purposes of architecture support, they are categorized as NuBus, OldWorld PCI, and NewWorld. Macintosh computers using the 680x0 series of processors are not in the PowerPC family but are instead m68k machines. Those models start with Mac II or have a 3-digit model number such as Centris 650 or Quadra 950. Apple's pre-iMac PowerPC model numbers have four digits. NuBus systems are not currently supported by debian/powerpc. The monolithic Linux/PPC kernel architecture does not have support for these machines; instead, one must use the MkLinux Mach microkernel, which Debian does not yet support. These include the following: Power Macintosh 6100, 7100, 8100 Performa 5200, 6200, 6300 Powerbook 1400, 2300, and 5300 Workgroup Server 6150, 8150, 9150 A linux kernel for these machines and limited support is available at OldWorld systems are most Power Macintoshes with a floppy drive and a PCI bus. Most 603, 603e, 604, and 604e based Power Macintoshes are OldWorld machines. The beige colored G3 systems are also OldWorld. The so called NewWorld PowerMacs are any PowerMacs in translucent colored plastic cases. That includes all iMacs, iBooks, G4 systems, blue colored G3 systems, and most PowerBooks manufactured in and after 1999. The NewWorld PowerMacs are also known for using the ROM in RAM system for MacOS, and were manufactured from mid-1998 onwards. Specifications for Apple hardware are available at AppleSpec, and, for older hardware, AppleSpec Legacy. Model Name/Number Generation Apple iMac Bondi Blue, 5 Flavors, Slot Loading NewWorld iMac Summer 2000, Early 2001 NewWorld iMac G5 NewWorld iBook, iBook SE, iBook Dual USB NewWorld iBook2 NewWorld iBook G4 NewWorld Power Macintosh Blue and White (B&W) G3 NewWorld Power Macintosh G4 PCI, AGP, Cube NewWorld Power Macintosh G4 Gigabit Ethernet NewWorld Power Macintosh G4 Digital Audio, Quicksilver NewWorld Power Macintosh G5 NewWorld PowerBook G3 FireWire Pismo (2000) NewWorld PowerBook G3 Lombard (1999) NewWorld PowerBook G4 Titanium NewWorld PowerBook G4 Aluminum NewWorld Xserve G5 NewWorld Performa 4400, 54xx, 5500 OldWorld Performa 6360, 6400, 6500 OldWorld Power Macintosh 4400, 5400 OldWorld Power Macintosh 7200, 7300, 7500, 7600 OldWorld Power Macintosh 8200, 8500, 8600 OldWorld Power Macintosh 9500, 9600 OldWorld Power Macintosh (Beige) G3 Minitower OldWorld Power Macintosh (Beige) Desktop, All-in-One OldWorld PowerBook 2400, 3400, 3500 OldWorld PowerBook G3 Wallstreet (1998) OldWorld Twentieth Anniversary Macintosh OldWorld Workgroup Server 7250, 7350, 8550, 9650, G3 OldWorld Power Computing PowerBase, PowerTower / Pro, PowerWave OldWorld PowerCenter / Pro, PowerCurve OldWorld UMAX C500, C600, J700, S900 OldWorld APS APS Tech M*Power 604e/2000 OldWorld Motorola Starmax 3000, 4000, 5000, 5500 OldWorld Model Name/Number Motorola Firepower, PowerStack Series E, PowerStack II MPC 7xx, 8xx MTX, MTX+ MVME2300(SC)/24xx/26xx/27xx/36xx/46xx MCP(N)750 IBM RS/6000 40P, 43P Power 830/850/860 (6070, 6050) 6030, 7025, 7043 p640 Model Name/Number IBM RS/6000 B50, 43P-150, 44P Genesi Pegasos I, Pegasos II Model Name/Number Amiga Power-UP Systems (APUS) A1200, A3000, A4000