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The memory was not used efficiently, but it was abundant enough that the issue never became critical. This is ironic given that the purpose of the original design was to maximise the use of very limited amounts of memory. Mac OS X finally did away with the whole scheme, implementing a modern paged virtual memory scheme.
The 68020 has many improvements over the 68000, including an instruction cache, and was the first Mac processor to support a paged memory management unit, the Motorola 68851. The Macintosh LC configured the 68020 to use a 16-bit system bus with ASICs that limited RAM to 10 MB (as opposed to the 32-bit limit of 4 GB).
Installation (or setup) of a computer program (including device drivers and plugins), is the act of making the program ready for execution. Installation refers to the particular configuration of software or hardware with a view to making it usable with the computer. A soft or digital copy of the piece of software (program) is needed to install it.
The computer first executes a relatively small program stored in read-only memory (ROM, and later EEPROM, NOR flash) which support execute in place, to initialize CPU and motherboard, to initialize the memory (especially on x86 systems), to initialize and access the storage (usually a block-addressed device, e.g. hard disk drive, NAND flash ...
The $1,500 model had 2 MB of memory and a 40 MB hard disk. The Classic features several improvements over the Macintosh Plus, which it replaced as Apple's low-end Mac computer: it is up to 25 percent faster than the Plus, [1] about as fast as the SE, [5] and includes an Apple SuperDrive 3.5" floppy disk drive as standard. [19]
Mac OS X 10.6 Snow Leopard was the first version of Mac OS X to be built exclusively for Intel Macs, and the final release with 32-bit Intel Mac support. [39] The name was intended to signal its status as an iteration of Leopard, focusing on technical and performance improvements rather than user-facing features; indeed it was explicitly ...
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System 7 (later named Mac OS 7) is the seventh major release of the classic Mac OS operating system for Macintosh computers, made by Apple Computer.It was launched on May 13, 1991, to succeed System 6 with virtual memory, personal file sharing, QuickTime, TrueType fonts, the Force Quit dialog, and an improved user interface.