The Sharp X68000 is often described through its Motorola 68000 processor, sprite hardware, and distinctive twin-tower case, but its display system is just as…
Stories
Overclocking the X68000 Video Controller for Higher Resolutions
Creating Reliable Backups of X68000 Game Cartridge ROMs
The Sharp X68000 is remembered for its floppy-based software library, but cartridges also occupy an important place in its gaming history. A cartridge can…
Repairing the X68000 power supply capacitors step by step
The Sharp X68000 remains remarkably serviceable for a Japanese home computer from the late 1980s and early 1990s. Its power supply, however, has spent decades…
Building and Using an X68000 Expansion Prototyping Board
The Sharp X68000 was designed to be expanded, modified, and connected to hardware beyond its original specification. Its expansion slots provide a practical…
Restoring the X68000 Monitor Tilt Mechanism
The X68000 is remembered for its twin-tower silhouette, sharp industrial styling, and hardware that was designed to be used rather than merely displayed. On…
Building a Passive Heatsink Upgrade for the X68000 CPU
The Sharp X68000 was designed around a Motorola 68000-family processor that runs reliably without the large active cooling systems found in modern computers.…
Understanding DMA Transfers on the Sharp X68000
The Sharp X68000 was designed at a time when fast peripherals could easily overwhelm the main processor. Its Motorola 68000 CPU is capable and flexible, but it…
Adding a hardware reset button to the X68000 front panel
The Sharp X68000 was designed as a serviceable computer, but repeated reset access is less convenient when the machine is installed in a modern case,…
Repairing X68000 PSU voltage rails with modern regulators
The Sharp X68000 remains remarkably usable for a computer designed in the late 1980s, but its original power supply is now a common source of failures. Ageing…
Building a Custom Input Device for the X68000 Joystick Port
The Sharp X68000 was designed around a straightforward digital control interface, which makes its joystick connector an appealing entry point for custom…
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.