Macintosh IIx

Macintosh IIx. Released by Apple Computer in September 1988, it was the first Macintosh to utilize the more advanced Motorola 68030 microprocessor. Positioned as an incremental but significant upgrade to the Macintosh II, the IIx offered enhanced performance and greater expansion capabilities, solidifying the Macintosh II series as a premier platform for professional and technical applications. Its introduction marked a key step in Apple's strategy to compete in the burgeoning workstation market dominated by companies like Sun Microsystems and Silicon Graphics.

Overview

The Macintosh IIx was introduced as a direct successor to the groundbreaking Macintosh II, which had established the modular Macintosh paradigm. The primary advancement was the integration of the 32-bit Motorola 68030 CPU, which offered improved performance over the Motorola 68020 used in its predecessor. This upgrade was part of Apple's ongoing efforts to cater to demanding users in fields such as desktop publishing, computer-aided design, and scientific research. The system maintained the same Snow White design language and beige case as the original Macintosh II, ensuring hardware compatibility while delivering a faster computing experience. Its release coincided with updates to the Macintosh SE/30 and further development of the A/UX operating system, showcasing Apple's commitment to its high-end product line.

Hardware

At the core of the Macintosh IIx was the 16 MHz Motorola 68030 processor, which included an integrated memory management unit (MMU), a feature absent from the 68020. It retained the Motorola 68882 floating-point unit (FPU) as a standard component for accelerated mathematical operations. The system's architecture supported up to eight Apple Desktop Bus (ADB) devices and included six NuBus expansion slots, providing extensive connectivity for peripherals like video cards, network interfaces, and SCSI controllers. Standard configurations included a SuperDrive capable of reading both Mac OS and MS-DOS floppy disks, and it supported internal SCSI hard drives. The power supply was upgraded to accommodate these expansion options, and the machine featured the proprietary Apple Sound Chip for audio output.

Software

The Macintosh IIx shipped with System Software 6, which fully leveraged the capabilities of the 68030 processor. It was also one of the primary target machines for A/UX, Apple's implementation of the Unix operating system, which aimed to appeal to technical and academic users familiar with environments from AT&T Bell Labs and Berkeley Software Distribution. This dual-OS capability allowed the IIx to run a vast library of Macintosh applications while also supporting powerful multitasking and networking features inherent to Unix. Key software that benefited from the IIx's power included Adobe Photoshop, Aldus PageMaker, and various applications from Microsoft and Lotus Software.

Reception and legacy

The Macintosh IIx was well-received by the professional community for its performance boost and maintained expandability. Reviewers in publications like Macworld and InfoWorld praised its speed and suitability as a development platform. However, it was sometimes critiqued for its high price point and the fact that its case design was largely unchanged. Its legacy is that of a crucial transitional model; it was replaced just two years later by the more compact Macintosh IIcx, but it proved the viability of the 68030 platform within the Macintosh line. The IIx's architecture directly influenced subsequent models like the Macintosh IIfx and cemented the importance of the NuBus standard for Apple's modular systems throughout the late 1980s and early 1990s.

Technical specifications

* Microprocessor: 16 MHz Motorola 68030 * Co-processor: Motorola 68882 FPU (standard) * Memory: 1 MB of RAM on motherboard, expandable to 8 MB using SIMMs; third-party solutions allowed up to 128 MB * Storage: One internal SCSI bus supporting hard drives; one 3.5-inch SuperDrive (1.44 MB) * Expansion: Six NuBus slots (three for full-length cards) * Video: Support for up to 256 colors (8-bit) at 640x480 resolution via a video card in a NuBus slot; multiple monitor support * Audio: Four-voice 8-bit Apple Sound Chip; built-in speaker * Ports: Two Apple Desktop Bus (ADB) ports, two serial ports, one SCSI connector, one floppy drive port, one audio output * Operating Systems: System Software 6 (6.0.3–6.0.8), A/UX Category:Macintosh Category:Apple Inc. hardware Category:Computer workstations Category:1988 in computing