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- Macintosh IIsi Technical Specifications
-
- Copyright 1990, Apple Computer, Inc.
-
- The 68030 microprocessor runs at 20 megahertz and features a built-in Memory
- Management Unit (MMU). The MMU supports the A/UX operating system and provides
- the capabilities necessary to support virtual memory, a new feature of
- Macintosh system software version 7.0. Virtual memory lets you work with more
- applications without the need for large amounts of DRAM by setting up sections
- on the hard disk for easy memory swapping. There are 256-byte data and
- instruction caches that accelerate overall system performance by eliminating
- one wait state that occurs with the 68020 processor.
-
- Customers who work routinely with software such as sophisticated CAD/CAM and
- graphics applications may want to add the Motorola 68882 floating-point math
- coprocessor to their systems. The 68882 optimizes the computer's performance
- during math-intensive calculations.
-
- The Macintosh IIsi comes with 1 megabyte of RAM on the main logic board. Up to
- 16 megabytes of RAM can be added by installing Single in-line Memory Modules
- (SIMMs). Some possible configurations include:
-
- -- 2 megabytes (1 megabyte on main logic board; four 256K SIMMs)
-
- -- 3 megabytes (1 megabyte on main logic board; four 512K SIMMs)
-
- -- 5 megabytes (1 megabyte on main logic board; four 1-megabyte SIMMs)
-
- -- 9 megabytes (1 megabyte on main logic board; four 2-megabyte SIMMs)
-
- -- 17 megabytes (1 megabyte on main logic board; four 4-megabyte SIMMs)
-
- The Macintosh IIsi uses 100-nanosecond (or faster) fast-paged mode RAM.
-
- A ROM SIMM socket on the logic board provides an easy ROM upgrade path.
-
- One NuBus card or 030 Direct Slot card can be added to the Macintosh IIsi by
- connecting it to a Macintosh IIsi adapter card (sold separately). NuBus
- provides a multiplexed, 32-bit address bus and data bus on a single 96-pin
- connector. The NuBus architecture supports data transfer rates up to 3.75
- megabytes per second. The 030 Direct Slot provides a 32-bit slot directly to
- the microprocessor via a 120-pin connector. This slot is compatible with
- expansion cards available for the Macintosh SE/30 personal computer. The
- Motorola 68882 floating-point math coprocessor is on the adapter cards.
-
- The SCSI (Small Computer System Interface) is an interface bus used to connect
- hard disks and other SCSI-based devices, such as the AppleCD SC CD-ROM drive,
- and Apple Scanner, and the Apple Personal LaserWriter to the Macintosh IIsi.
- This interface can support up to seven SCSI peripheral devices.
-
- The Macintosh IIsi provides full ROM support for all AppleTalk protocols, and
- includes built-in serial ports for LocalTalk network connections.
-
- Macintosh system software includes:
-
- -- System software version 6.0.6 or later (the Macintosh Operating System)
- with System Startup disk.
-
- -- System Additions disk (includes utilities such as the Apple File Exchange,
- HD SC Setup, CloseView, Disk First Aid, and Font/DA Mover).
-
- HyperCard 2.0 Home, Addresses with Audio, Appointments with Audio, Audio
- Palette, and Audio Help stacks are included. A/UX version 2.0.1 (optional) is
- compatible with the Macintosh IIsi.
-
- The Macintosh IIsi has been designed to accept and process sound as well as
- generate it. Using a microphone or phono jack adapter, and appropriate
- software, you can speak into the computer to create electronic voice messages
- and add voice comments to files. Sound entering the computer is monaural,
- 8-bit sound. It is filtered through a custom filter/preamplifier chip,
- converted to digital form, and stored in DRAM or directly on the hard disk. An
- Apple electret microphone and phono jack adapter are included.
-
- Microprocessor
-
- -- MC68030, 32-bit architecture (includes built-in Memory Management Unit)
-
- -- 20-megahertz clock speed
-
- -- Two 256-byte, built-in instruction and data caches
-
- Coprocessor (optional)
-
- -- MC68882 floating-point math coprocessor
-
- -- 20-megahertz clock speed (IEEE Standard 80-bits precision)
-
- Memory
-
- -- 1 megabyte of on-board RAM, expandable to 17 megabytes
-
- -- 512K of ROM, with ROM SIMM access for future upgrades
-
- -- 256 bytes of parameter memory
-
- Disk Drives
-
- -- Built-in Apple SuperDrive 1.4-megabyte floppy disk drive (optional external
- 1.4-megabyte or 800K disk drive available)
-
- -- Internal Apple SCSI hard disk drive (1/3 height, 40 or 80 megabytes)
-
- -- Optional external Apple SCSI hard disk (many capacities available)
-
- Monitors
-
- -- Supports for Apple color and monochrome monitors as well as some
- third-party monitors, including:
-
- - Macintosh 12" RGB Display: up to 256 colors, 512 by 384 pixels
-
- - AppleColor High-Resolution RGB Monitor: up to 256 colors, 640 by 480
- pixels
-
- - Macintosh 12" Monochrome Display: up to 256 shades of gray, 640 by 480
- pixels
-
- - Apple Macintosh Portrait Display: up to 16 shades of gray, 640 by 870
- pixels
-
- -- When equipped with a video expansion card, supports other Apple and
- non-Apple monitors
-
- Interfaces
-
- -- One Apple Desktop Bus (ADB) port, supporting a keyboard, mouse, and other
- devices daisy-chained through a low-speed, synchronous serial bus (a maximum of
- three chained devices is recommended)
-
- -- One DB-15 video port, supporting color and monochrome monitors of various
- sizes and resolution
-
- -- Two serial (RS-232/RS-422) ports, 230 kilobits per second maximum (up to
- 0.920 megabits per second if clocked externally)
-
- -- SCSI interface using a 50-pin internal connector and a DB-25 connector for
- the first external device; all subsequent SCSI-based peripheral devices use
- standard SCSI-to-SCSI interface cables
-
- -- Internal expansion slot, supporting a NuBus or an 030 Direct Slot expansion
- card
-
- -- External 3.5-inch floppy disk drive (800K or 1.4-megabyte) interface
-
- -- Stereo sound output port for external audio devices
-
- -- Sound input port for monaural sound input
-
- Sound Input
-
- -- Monaural 8-bit sound
-
- -- Sound samples can be made at 22 or 11 kilohertz.
-
- -- Macintosh Audio Compression Expansion (MACE) sound utility supporting 3:1
- or 6:1 compression, which allows up to 3 hours of sound to be stored on a
- single 40-megabyte hard disk
-
- Microphone
-
- -- "Hands free" omnidirectional electret microphone
-
- Sound Generator
-
- -- Apple's custom digital sound chip provides 8-bit stereo sampling at 44.1
- kilohertz, and includes four-voice wave-table synthesis - capable of driving
- stereo headphones or other stereo equipment through the sound jack.
-
- Mouse
-
- -- Apple Desktop Bus Mouse; mechanical tracking: optical shaft or contact
- encoding; 100 + or - 10 pulses per in. (3.9 + or - 0.39 pulses per mm) of
- travel
-
- Clock/Calendar
-
- CMOS custom chip with long-life lithium battery
-
- Electrical requirements
-
- -- Line voltage: 120 volts AC, RMS
-
- -- Frequency: 47 to 63 hertz, single phase
-
- -- Power: 100 watts maximum
-
- ADB Power Requirements
-
- -- Maximum power draw for all ADB devices: 500 milliamps (a maximum of three
- ADB devices, daisy-chained to the port, is recommended)
-
- -- Mouse draws 80 milliamps.
-
- -- Keyboard draws 25 to 80 milliamps (varies with keyboard model used) (the
- practical total of ADB devices is three daisy-chained to the port).
-
- Main Unit Size and Weight
-
- -- Height: 4 in. (10 cm)
-
- -- Width: 12.4 in (31 cm)
-
- -- Depth: 14.9 in. (37.2 cm)
-
- -- Weight: 10 lb. (4.5 kg)
-
- Mouse Size and Weight
-
- -- Height: 1.1 inches (2.8 cm)
-
- -- Width: 2.1 inches (5.3 cm)
-
- -- Depth: 3.8 inches (9.7 cm)
-
- -- Weight: 6 ounces (.17 kg)
-
- Operating Environment
-
- -- Operating temperature: 50 to 104 degrees F (10 to 40 degrees C)
-
- -- Storage temperature: -40 to 116.6 degrees F (-40 to 47 degrees C)
-
- -- Relative humidity: 5% to 95%, noncondensing
-
- -- Maximum altitude: 10,000 ft. (3048 m)
-
- Macintosh IIsi 2/40 Order Number M0363LL/A
-
- Macintosh IIsi 5/80 Order Number M0364LL/A
-
- New Prod Highlights
- 10-15-90
-