Early versions of the Mac OS were accordant abandoned with Motorola 68000-based Macintoshes. As Apple alien computers with PowerPC hardware, the OS was ported to abutment this architectonics as well. Mac OS 8.1 was the aftermost adaptation that could run on a "68K" processor (the 68040). Mac OS X, which has abolished the "Classic" Mac OS, is accordant with abandoned PowerPC processors from adaptation 10.0 ("Cheetah") to adaptation 10.3 ("Panther"). PowerPC and Intel processors are accurate in adaptation 10.4 ("Tiger", Intel abandoned accurate afterwards an update) and adaptation 10.5 ("Leopard"). Versions 10.6 ("Snow Leopard") and after abutment abandoned Intel processors.4
The aboriginal Macintosh operating arrangement initially consisted of two pieces of software, alleged "System" and "Finder", anniversary with its own adaptation number.5 Arrangement 7.5.1 was the aboriginal to accommodate the Mac OS logo (a aberration on the aboriginal Happy Mac startup icon), and Mac OS 7.6 was the aboriginal to be called "Mac OS".
Before the addition of the after PowerPC G3-based systems, cogent genitalia of the arrangement were stored in concrete ROM on the motherboard. The antecedent purpose of this was to abstain application up the bound accumulator of billowing disks on arrangement support, accustomed that the aboriginal Macs had no adamantine disk. (Only one archetypal of Mac was anytime absolutely bootable application the ROM alone, the 1991 Mac Classic model.) This architectonics additionally accustomed for a absolutely graphical OS interface at the everyman akin after the charge for a text-only animate or command-line mode. Boot time errors, such as award no activity deejay drives, were announced to the user graphically, usually with an figure or the characteristic Chicago bitmap chantry and a Chime of Death or a alternation of beeps. This was in adverse to computers of the time, which displayed such letters in a mono-spaced chantry on a atramentous background, and appropriate the use of the keyboard, not a mouse, for input. To accommodate such niceties at a low level, Mac OS depended on amount arrangementcomputer application in ROM on the motherboard, a actuality that after helped to ensure that abandoned Apple computers or accountant clones (with the copyright-protected ROMs from Apple) could run Mac OS.
Mac OS can be disconnected into two families:
The Mac OS Classic family, which was based on Apple's own code
The Mac OS X operating system, developed from Mac OS Classic family, and NeXTSTEP, which was UNIX-based
The aboriginal Macintosh operating arrangement initially consisted of two pieces of software, alleged "System" and "Finder", anniversary with its own adaptation number.5 Arrangement 7.5.1 was the aboriginal to accommodate the Mac OS logo (a aberration on the aboriginal Happy Mac startup icon), and Mac OS 7.6 was the aboriginal to be called "Mac OS".
Before the addition of the after PowerPC G3-based systems, cogent genitalia of the arrangement were stored in concrete ROM on the motherboard. The antecedent purpose of this was to abstain application up the bound accumulator of billowing disks on arrangement support, accustomed that the aboriginal Macs had no adamantine disk. (Only one archetypal of Mac was anytime absolutely bootable application the ROM alone, the 1991 Mac Classic model.) This architectonics additionally accustomed for a absolutely graphical OS interface at the everyman akin after the charge for a text-only animate or command-line mode. Boot time errors, such as award no activity deejay drives, were announced to the user graphically, usually with an figure or the characteristic Chicago bitmap chantry and a Chime of Death or a alternation of beeps. This was in adverse to computers of the time, which displayed such letters in a mono-spaced chantry on a atramentous background, and appropriate the use of the keyboard, not a mouse, for input. To accommodate such niceties at a low level, Mac OS depended on amount arrangementcomputer application in ROM on the motherboard, a actuality that after helped to ensure that abandoned Apple computers or accountant clones (with the copyright-protected ROMs from Apple) could run Mac OS.
Mac OS can be disconnected into two families:
The Mac OS Classic family, which was based on Apple's own code
The Mac OS X operating system, developed from Mac OS Classic family, and NeXTSTEP, which was UNIX-based
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