The Sharp X68000 is a series of home computers developed and released by Sharp Corporation, primarily for the Japanese market. First introduced in 1987, the X68000 line was distinguished by its powerful hardware specifications for its era, particularly its advanced graphics and sound capabilities, which made it a popular platform for video games, including many highly accurate arcade conversions. Production of the X68000 series continued until 1993.
History and Development Sharp Corporation designed the X68000 series as a high-end personal computer. The initial model, released in 1987, was simply named "X68000." Over the years, Sharp released several updated models, offering incremental improvements in processor speed, memory, and storage options. The series culminated with the X68030, released in 1993, which featured a faster CPU. The X68000 was targeted at enthusiasts, developers, and users who required advanced multimedia and computing power beyond what was typically offered by mainstream personal computers of the time.
Hardware Specifications The X68000 series was built around Motorola's 68000 family of microprocessors, a common choice for powerful workstations and high-end personal computers of the late 1980s and early 1990s.
- CPU: Initial models featured a Motorola 68000 CPU operating at 10 MHz. Later models upgraded to the Motorola 68030 at 25 MHz, and some configurations supported an optional 68040 accelerator card.
- Memory: Standard RAM typically ranged from 1 MB to 2 MB, expandable up to 12 MB or more depending on the specific model.
- Graphics: A custom graphics chip provided impressive visual capabilities. It supported high-resolution display modes, including 768x512 pixels with 65,536 colors from a palette of 65,536. Hardware features included dedicated graphics VRAM, hardware scrolling, and sprites, facilitating smooth animation and detailed visuals.
- Sound: The audio system utilized a Yamaha YM2151 FM synthesizer chip (providing 8 voices with 4 operators) for musical scores and effects, complemented by an OKI MSM6258 ADPCM chip for high-quality sampled sound. This combination allowed for sophisticated audio output.
- Storage: Most models incorporated dual 5.25-inch or 3.5-inch floppy disk drives. Support for SCSI hard drives was also common, providing robust storage solutions.
- I/O: The systems included various ports for peripherals, joysticks, MIDI instruments, and networking capabilities.
Operating System The primary operating system for the X68000 was Human68k, developed by Hudson Soft. Human68k featured a command-line interface (CLI) similar in functionality to MS-DOS. It also supported a graphical user interface (GUI) environment known as SX-WINDOW, which provided a more visually driven interaction experience for users.
Software and Applications While the X68000 could run productivity software, its most significant impact was in the realm of video games. Its powerful hardware made it capable of producing arcade-perfect or near-perfect conversions of popular coin-op titles, such as Ghouls 'n Ghosts, Street Fighter II, Gradius, and Daimakaimura. This made it a highly sought-after machine for gamers in Japan. Beyond gaming, the X68000 was also a favored platform for demoscene activities and hobbyist programming, due to its accessible hardware architecture and comprehensive development tools.
Legacy The Sharp X68000 holds a significant place in the history of personal computing, particularly within Japan, and remains a cult classic among retro computing enthusiasts globally. Although it did not achieve the same level of international commercial success as some Western computer systems, its technological prowess, the quality of its arcade ports, and its dedicated user base have solidified its legacy as a unique and advanced computing platform of its era.