The Sharp X68000 remains a beloved machine among retro computing enthusiasts, prized for its arcade-perfect sound and video capabilities. However, decades…
Stories
Modern Replacements for X68000 Video Amplifier Transistors
Writing A Human68k Driver For A PS/2 Keyboard Via The Serial Port
The Sharp X68000 was designed around a keyboard that is increasingly difficult to replace. Original keyboards can be expensive, fragile and awkward to ship to…
Building a reliable SCSI cable with active termination
A good SCSI cable is more than a bundle of wires between an X68000 and a hard disk. The cable forms part of the electrical bus, so its impedance, grounding,…
Designing a Human68k Utility for RAM Disk Management
The Sharp X68000 remains one of the most architecturally distinctive personal computers of the late 1980s, and hobbyists in Australia and beyond still pull…
Adding a Hardware Reset Button to the Sharp X68000 Front Panel
The Sharp X68000 was a flagship Japanese home computer in the late 1980s, renowned for its Motorola 68000 CPU, arcade-quality sound, and crisp display output.…
Restoring an X68000 Floppy Drive Door Spring with a Custom Wire
There's a particular kind of disappointment that arrives in the post when you open a battered cardboard box containing a freshly imported Sharp X68000. The…
Human68k Executable Patching Across Memory Layouts
Writing a Human68k tool to patch game executables for different memory layouts is a useful way to keep Sharp X68000 software running on varied machines. A…
3D-Printed Cartridge Cases for Sharp X68000 Homebrew Software
The Sharp X68000 holds a curious place in Australian retrocomputing circles, especially among enthusiasts who grew up importing Japanese computers through…
Emulating the X68000 Keyboard Matrix with a Microcontroller for Diagnostics
The Sharp X68000 keyboard relies on a 12×8 switch matrix scanned by a dedicated controller IC. When a key is pressed, the controller detects the intersection…
Merging Human68k Disk Images into a Single Archive for the Sharp X68000
The Sharp X68000, a powerhouse home computer released by Sharp Corporation in the late 1980s, shipped with Human68k as its native operating system. Many…
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.