The Sharp X68000 is often described through its arcade conversions, FM sound and distinctive tower case, yet its input hardware deserves equal attention. A…
Stories
Building a Human68k Utility for Joystick Axis Calibration
Installing a rechargeable lithium battery for X68000 SRAM backup
The Sharp X68000 stores important settings, high-score data and other small files in battery-backed SRAM. When the original battery reaches the end of its…
Repairing X68000 System Board Trace Corrosion with Wire Jumpers
The Sharp X68000 remains one of the most rewarding Japanese home computers to restore, but age has made corrosion a serious concern. A machine may appear clean…
Building a passive cooling fan mount for X68000 expansion cards
The Sharp X68000 was designed in an era when expansion cards were expected to fit neatly inside a well-engineered desktop enclosure, without the constant heat…
Using a Logic Analyzer to Reverse Engineer the X68000 Video DAC
The Sharp X68000’s video output sits at the meeting point between digital graphics data and an analogue display signal. That makes it an attractive target for…
A Keyboard-Controlled Warm Reset For The X68000
The Sharp X68000 remains remarkably usable when its ageing hardware is treated carefully. A solid-state storage device, a refreshed power supply and a reliable…
Restoring an X68000 floppy drive with a 3D-printed pulley
A failing floppy drive can make an otherwise healthy Sharp X68000 appear unreliable. The machine may power up, recognise a disk intermittently, or produce a…
Adding wireless file transfers to an X68000
The Sharp X68000 remains a remarkably capable machine for a computer designed in the late 1980s. Its SCSI storage, generous expansion options and strong…
Repairing The X68000 CRTC With A Replacement FPGA Module
The Sharp X68000 remains one of the most interesting Japanese home computers because its video hardware sits close to the machine’s identity. Its sharp…
Restoring the X68000 Keyboard Membrane and Key Switch Contacts
The Sharp X68000 keyboard is one of the most satisfying parts of the system to restore. Its large, distinctive case, dedicated function keys and firm typing…
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.