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The Quadra 605 is an entry level 68040 microprocessor-based Apple Macintosh personal computer code-named "''Aladdin''" or "''Primus''" which was released on October 21, 1993 as part of the Quadra series and discontinued on October 16, 1994. It is one of few Macintosh models to not share a case with another machine (although the internal layout is shared with the Performa/LC 475 family.) ==Specifications== * Central processing unit: 25 MHz MC68LC040, 32-bit bus. 8 kB of on-chip L1 cache is divided into 4 kB of Data and 4 kB of Instruction cache. There are no other caches, although an L2 cache is possible via an LC PDS card. The 68LC040 can be replaced with a 68040 which includes onboard Floating Point Unit. This will approximately triple the speed of floating point operations.〔(Lowendmac.com: Mac Benchmarks - Quadra 605 a.k.a. LC 475, Performa 475 or 476 ).〕 * Random access memory: 4 MB on the motherboard, one 72 pin SIMM socket for 80 ns or faster SIMMs. The official supported maximum RAM is 36 MB in one 32MB 72 pin SIMM plus 4MB on the motherboard, but larger SIMMs do work - up to 128 MB may be used, with some limits on RAM type.〔(Lowendmac.com: Quadra 605 ). Quadra 605s work with single-banked SIMMs (Note that single-banked is a logic-level trait, not a physical one; single-banked SIMMs may be single or double sided).〕 Physical limits might apply if the side of the SIMM facing the CPU has thicker chips, as the clips on the SIMM socket will not close around it automatically. It should be possible to manually push the clips enough to hold the SIMM in place. The DJMEMC memory controller used in the Quadra 605s predecessors (Quadra/Centris 610, Quadra/Centris 650 and Quadra 800) will only recognize SIMMs up to 32 MB, while the newer MEMCjr used in the Quadra 605 recognizes the larger sizes. * Video: Video out is provided by one DA15F connector, and is compatible with VGA monitors through the use of an adaptor.〔(Apple.com: VGA Monitors - Which Macintosh Models Are Compatible ).〕 Two internal Video RAM slots can take either two 256 kB 80 ns 68-pin VRAM SIMMs, or two 512 kB SIMMs. Installing one 512 kB and one 256 kB VRAM SIMM garbles the display. Resolutions and colors available with the two VRAM configurations are shown in the table below.〔(Apple.com: Macintosh Quadra 605 Technical Specifications. )〕 * Audio * * Out - stereo 8-bit, 11 kHz or 22 kHz * * In - Line-level. The input socket is a stereo socket, and can input two channels of a stereo signal - however these are mixed and only accessible to the hardware as a combined mono 8-bit signal. An Apple PlainTalk Microphone provides line-level input by using a longer 4-contact plug which receives power from a 5 V supply within the input jack. Other microphones only give a mic-level input, and do not work with the Quadra 605. Recording is possible at 11 or 22 k samples/second, with filters applied at 3.5 kHz and 7 kHz respectively while recording.〔(Apple.com: Developer Note - Macintosh LC 475 and Macintosh Quadra 605 ).〕 * Floppy Drive: 1.4 MB SuperDrive, manual inject. * Hard Drive: 80 MB or 160 MB. * Battery: Quadra 605s take a lithium half-AA cell 3.6 V battery. If the battery is drained, the video will NOT start up.〔(Apple.com: Macintosh Computers - Low Battery Can Cause No Video ).〕 To start up a Quadra 605 with a flat or missing battery, it can be turned on for a few seconds, then turned off for a second then on again. This leaves enough charge in the system's capacitors for video to start up. * Power supply: 30 watts standard, but many second hand machines come with replacement PSUs, either third party, Apple replacement or stripped from earlier LC models. Some of these go up to 45 watts. The Quadra 605 is a registered Energy Star Compliant product.〔(Apple.com: Energy Star - Registered Apple Products ).〕 *Weight: 8.8 lb / 4 kg standard. A Quadra 605 can support a monitor up to 35 lb / 15.9 kg.〔(Apple.com: Desktop Macintosh Computers: How Much Mass (Weight) Can They Support? ).〕 * Dimensions: 2.9" high x 12.2" wide x 15.3" deep / 7.4 cm high x 31 cm wide x 38.8 cm deep. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Macintosh Quadra 605」の詳細全文を読む スポンサード リンク
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