Adding a second floppy drive to a Sharp X68000 can make disk copying, software testing, and recovery work much easier. The modification looks simple from the…
Stories
Adding a Second Floppy Drive to an X68000 Internal Bay
Troubleshooting X68000 SCSI boot failure with terminator checks
A Sharp X68000 that suddenly stops during startup can appear to have a serious system-board fault, yet the cause is often much simpler: an incorrectly…
Building an X68000 MIDI Interface on the Expansion Bus
The Sharp X68000 is an unusually capable platform for music, games and experimental hardware. Its expansion bus exposes enough of the machine’s internal…
Restoring an X68000 Case with Retrobright and UV Protection
The Sharp X68000 has a case that is unusually recognisable: tall proportions, crisp moulded panels, dark trim and the distinctive twin-tower silhouette. Time,…
Repairing an X68000 power switch with a new rocker
A loose, intermittent or cracked power switch is a common problem on ageing Sharp X68000 computers. After decades of use, the original rocker can develop worn…
Building a VGA Adapter for the X68000 C-Bus Video Slot
The Sharp X68000 remains an unusually rewarding platform for hardware experimentation. Its sharp pixel graphics, distinctive Japanese software library and…
Using a Logic Analyzer to Debug X68000 Bus Timing
The Sharp X68000 is a rewarding machine to repair because its signals are accessible, its architecture is well documented, and a fault can often be narrowed…
Restoring the X68000 Internal Speaker with a Modern Replacement
The Sharp X68000 has a sound that is easy to recognise, even when the machine is being used through a modern display. Its FM music and game effects are usually…
Building a Human68k driver for a PCMCIA Ethernet card
Adding network access to a Sharp X68000 is a satisfying way to make an old machine useful without losing its original character. A PCMCIA Ethernet card can…
Designing a custom backplate for X68000 slot covers
The Sharp X68000’s front slot covers are small, plain components, yet they have a strong effect on the character of the machine. A custom backplate can turn an…
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.