The Sharp X68000 holds a special place among retrocomputing enthusiasts, prized for its Motorola 68000 CPU, custom sound chips, and arcade-grade graphics. Yet…
Stories
Thermal camera diagnostics for overheating X68000 components
A Human68k palette utility for reliable save and restore
Creating a Human68k Utility to Save and Restore Palette Registers is a compact project with useful results. A small command-line program can capture the…
Restoring the X68000 System Speaker With a Piezo Buzzer Replacement
The Sharp X68000 makes its presence known with a sharp, resonant click whenever the system boots, a tactile cue that has become part of the ritual for…
Building a Human68k FAT32 Driver for External Storage
The Sharp X68000 remains unusually approachable for serious hardware and software work. Its Motorola 68000 processor, documented interfaces and active…
Bridging Eras: An X68000 Mouse to USB Adapter Board
The Sharp X68000 remains one of the most distinctive Japanese home computers of the late 1980s and early 1990s, celebrated for its Motorola 68000 CPU,…
Installing SD-based SCSI storage in the Sharp X68000
Replacing an ageing hard disk with a SCSI hard drive emulator is one of the most practical upgrades for a Sharp X68000. A small adapter can present an SD card…
Adding a Second Floppy Controller to an X68000
The Sharp X68000 was designed around a two-drive floppy arrangement, which was perfectly sensible when software was distributed on one or two 5.25-inch disks.…
Restoring X68000 Casing Yellowing With Retr0brite
The Sharp X68000 has one of the most recognisable silhouettes in Japanese computer history: tall twin towers, a narrow central drive section and sculpted…
Understanding the X68000 DMA Controller for High-Speed Data Transfers
The Sharp X68000 was designed around fast, tightly integrated hardware rather than the slower peripheral model common to many home computers of its era. Its…
Building a hardware cartridge slot for homebrew X68000 game prototypes
A cartridge slot gives an X68000 game prototype a physical form that feels closer to a dedicated console while keeping development flexible. Instead of…
Nereid-X Expansion Board
A personally-produced LAN+USB+Memory expansion board for Sharp X68000 series computers. Multiple production runs were offered, including a final batch and a later revival reproduction run.
Power Supply Repair
X68 power supply repair and modification services were offered by the site owner, with documentation shared through diary entries spanning 2001–2006.
Server & Networking
Notes on FreeBSD administration, ISP changes, server migration, and networking topics. The site itself ran on FreeBSD with the hns diary system and Namazu search integration.
Get in touch
X68K.NET connects Sharp X68000 enthusiasts through community links and shared projects. Reach out with questions about the Nereid project or X68 resources.