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Processor Direct Slot
A processor direct slot (PDS) is a slot incorporated into many older Macintosh models that allowed direct access to the signal pins of a CPU, similar to the functionality of a local bus in PCs. This would result in much higher speeds than having to go through a bus layer, such as NuBus, which typically ran at a slower 10 MHz speed. Overview Typically, a machine would feature multiple bus expansions slots, if any. However, there was never more than one PDS slot. Rather than providing a sophisticated communication protocol with ''arbitration'' between different bits of hardware that might be trying to use the communication channel at the same time, the PDS slot, for the most part, just gave direct access to signal pins on the CPU, making it closer in nature to a local bus. Thus, PDS slots tended to be CPU-specific, and therefore a card designed for the PDS slot in the Motorola 68030-based Macintosh SE/30, for example, would not work in the Motorola 68040-based Quadra 700. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macintosh IIci
The Macintosh IIci is a personal computer designed, manufactured, and sold by Apple Computer, Inc. from September 1989 to February 1993. It is a more powerful version of the Macintosh IIcx, released earlier that year, and shares the same compact case design. With three NuBus expansion slots and a Processor Direct Slot, the IIci also improved upon the IIcx's 16 MHz Motorola 68030 CPU and 68882 FPU, replacing them with 25 MHz versions of these chips. The Macintosh Quadra 700 was introduced at the end of 1991 as Apple's mainstream workstation product to replace the IIci, albeit at a significantly higher price point: by this time, Apple authorized resellers were offering entry-level IIci systems for US$4,000 or less, whereas the Quadra 700 entered the market above US$6,000. Because of this, Apple continued to sell the IIci until early 1993 when the less expensive Quadra 650 and comparably-priced Quadra 800 were introduced. Hardware The IIci introduced several techn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Performa
The Macintosh Performa is a family of personal computers designed, manufactured and sold by Apple Inc., Apple Computer, Inc. from 1992 to 1997. The Performa brand re-used models from Apple's Macintosh Quadra, Quadra, Macintosh Centris, Centris, Macintosh LC family, LC, and Power Macintosh families with model numbers that denoted included software packages or hard drive sizes. Whereas non-Performa Macintosh computers were sold by Apple Authorized Resellers, the Performa was sold through big-box stores and mass-market retailers such as Good Guys (American company), Good Guys, Circuit City, and Sears. The initial series of models consisted of the Macintosh Classic II-based Performa 200, the Macintosh LC II, LC II-based Performa 400, and the Macintosh IIvi, IIvi-based Performa 600. After releasing a total of sixty-four different models, Apple retired the Performa brand in early 1997, shortly after release of the Power Macintosh 5500, Power Macintosh 6500, 6500, Power Macintosh 860 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
16-bit
16-bit microcomputers are microcomputers that use 16-bit microprocessors. A 16-bit register can store 216 different values. The range of integer values that can be stored in 16 bits depends on the integer representation used. With the two most common representations, the range is 0 through 65,535 (216 − 1) for representation as an (unsigned) binary number, and −32,768 (−1 × 215) through 32,767 (215 − 1) for representation as two's complement. Since 216 is 65,536, a processor with 16-bit memory addresses can directly access 64 KB (65,536 bytes) of byte-addressable memory. If a system uses segmentation with 16-bit segment offsets, more can be accessed. 16-bit architecture The MIT Whirlwind ( 1951) was quite possibly the first-ever 16-bit computer. It was an unusual word size for the era; most systems used six-bit character code and used a word length of some multiple of 6-bits. This changed with the effort to introduce ASCII, which used a 7-bit code and naturally led ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macintosh LC II
The Macintosh LC II is a personal computer designed, manufactured, and sold by Apple Computer from March 1992 to March 1993. The LC II is an update to the original Macintosh LC, replacing its Motorola 68020 processor with a 68030 and increasing the onboard memory to 4 MB. The LC II was priced at US$1,699, fully $800 less than the original LC when it was introduced. In September 1992, Apple introduced the Macintosh Performa family of consumer-oriented computers. The LC II was repackaged as the Performa 400. When LC II was replaced by the Macintosh LC III in early 1993, the LC II was discontinued in North America, and two new Performa models (the 405 and 430) were introduced in its place. In October, the Performa 400, 405 and 430 were all discontinued and a new LC II-based model called the Performa 410 was introduced which became Apple's new entry-level computer. The LC II continued to be sold in some markets for some time after that. The LC II was Apple's highest-selli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
68030
The Motorola 68030 ("''sixty-eight-oh-thirty''") is a 32-bit microprocessor in the Motorola 68000 family. It was released in 1987. The 68030 was the successor to the Motorola 68020, and was followed by the Motorola 68040. In keeping with general Motorola naming, this CPU is often referred to as the 030 (pronounced ''oh-three-oh'' or ''oh-thirty''). The 68030 is essentially a 68020 with a memory management unit (MMU) and instruction and data caches of 256 bytes each. It added a burst mode (computing), burst mode for the caches, where four longwords can be loaded into the cache in a single operation. The MMU was mostly compatible with the external Motorola 68851, 68851 that would be used with the 68020, but being internal allowed it to access memory one cycle faster than a 68020/68851 combo. The 68030 did not include a built-in floating-point unit (FPU), and was generally used with the Motorola 68881, 68881 and the faster Motorola 68882, 68882. The addition of the FPU was a major d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1990
File:1990 Events Collage.png, From left, clockwise: The 1990 FIFA World Cup is played in Italy; The Human Genome Project is launched; Voyager I takes the famous Pale Blue Dot image- speaking on the fragility of Humankind, humanity on Earth, Astrophysics, astrophysicist Carl Sagan states: "''That's here. That's home. That's us.''" ; West Germany and East Germany German reunification, reunify; Police stand on-guard during the Poll tax riots in the United Kingdom; Iraq under Saddam Hussein Iraqi invasion of Kuwait, invades Kuwait, beginning the Gulf War; The 1990 Manjil–Rudbar earthquake kills between 35,000 - 50,000 people in Iran; The Hubble Space Telescope is launched from the Space Shuttle Discovery., 300x300px, thumb rect 0 0 200 200 1990 FIFA World Cup rect 200 0 400 200 Human Genome Project rect 400 0 600 200 Pale Blue Dot rect 0 200 300 400 Hubble Space Telescope rect 300 200 600 400 German reunification rect 0 400 200 600 1990 Manjil–Rudbar earthquake rect 200 400 400 600 I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macintosh IIfx
The Macintosh IIfx is a personal computer designed, manufactured and sold by Apple Computer from March 1990 to April 1992. At introduction it cost from to , depending on configuration, and it was the fastest Macintosh available at the time. The IIfx is the most powerful of the 68030-based Macintosh II family and was replaced at the top of Apple's lineup by the Macintosh Quadra in 1991. It is the last Apple computer released that was designed using the Snow White design language. Overview Dubbed "Wicked Fast" by its Product Manager, Frank Casanova – who came to Apple from Apollo Computer in Boston, Massachusetts, where the Boston term "wicked" is commonly used to denote anything extreme – the IIfx runs at a clock rate of 40 megahertz, has 32 KB of Level 2 cache, six NuBus slots, and includes a number of proprietary ASICs and coprocessors. Designed to speed up the machine even further, these chips require system-specific drivers. The 40 MHz speed refers to the main l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compact Mac
A Compact Macintosh (or Compact Mac) is an all-in-one Apple Mac computer with a display integrated in the computer case, beginning with the original Macintosh 128K. Compact Macs include the original Macintosh through to the Color Classic sold between 1984 and the mid-1990s. The larger Macintosh LC 500 series, Power Macintosh 5000 series and iMac are not described as a "Compact Mac." Apple divides these models into five form factors: The Macintosh 128K, Macintosh SE, and Macintosh Classic (all with a black and white screen), the modernized Macintosh Color Classic with a color screen, and the very different Macintosh XL Macintosh XL is a modified version of the Apple Lisa personal computer made by Apple Computer In the Macintosh XL configuration, the computer shipped with MacWorks XL, a Lisa program that allowed 64 K Macintosh ROM emulation. An identical ma .... Models *220 V international models are appended with the letter "P" (e.g. ''M0001P'') Timeline See ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DayStar Digital
DayStar Digital, Inc. was a company founded in 1983 by Andrew Lewis as a subcontract manufacturer of electronic assemblies and circuit boards. In 1986, the company released memory upgrades for Apple Macintosh (Mac) computers as its first products, and in 1987, DayStar began to market processor upgrades exclusively for the Mac, the first being for the Apple Macintosh II computer. The company focused exclusively on this market for the full range of Mac computers through 1995, utilizing the Motorola 68030, 68040 and PowerPC 601 processors. These upgrades were installed directly into the Processor Direct Slot of various Macintosh platforms, as on the Macintosh IIci, or via an adapter. DayStar became known as the leading "speed shop" for Macintosh computer systems; it won virtually every Mac editorial award given for product excellence and had the top rated brand among peripheral manufacturers. The company also formed unique strategic relationships with many companies including Apple, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macintosh IIvx
The Macintosh IIvx is a personal computer designed, manufactured and sold by Apple Computer from October 1992 to October 1993. It is the last of the Macintosh II family of Macintosh computers. The IIvx was introduced at the same time as the Macintosh IIvi, with both models using the same metal case design as the earlier Performa 600 and Performa 600CD. Like the Performa 600CD, the IIvx could be equipped with an internal double-speed CD-ROM drive. The IIvx was described in a ''MacWorld'' magazine review as having "the best price-to-performance ratio of any computer Apple has ever built." The list price for a machine with an hard drive, main memory, and of video memory was US$2,949. Adding the CD-ROM and upgrading to of main memory and video memory increased the price to US$3,219, which ''Macworld'' deemed to be "the best CD-ROM drive bargain ever offered". Overview The Mac IIvx began its life in development as a proof-of-concept to see how an internal CD-ROM drive could ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macintosh IIvi
The Macintosh IIvi (also sold as the Macintosh Performa 600) is a personal computer designed, manufactured, and sold by Apple Computer from September 1992 to February 1993. The IIvi was introduced alongside the Macintosh IIvx, using a slower Motorola 68030 processor (16 MHz vs. 32 MHz) and no floating point unit. The Performa 600 models, meanwhile, are the IIvi with the IIvx's 32 MHz CPU. The IIvi was, on some benchmarks, faster than the IIvx. It is the only model in the Macintosh II family to be branded as a Performa. This model was discontinued four months after its introduction, when the Centris 650 was introduced at a similar price point. Models All models include three NuBus slots and a Processor Direct Slot (PDS). The Performa 600 models were formally introduced on September 14; shipments were delayed until October to coincide with the introduction of the IIvi and IIvx. Introduced September 14, 1992: * Macintosh Performa 600: 32 MHz 68030, 4 or 5 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
