The Sharp X68000 was designed around analog RGB rather than the composite video input found on many domestic televisions. That distinction matters when a…
Stories
Repairing the X68000 Composite Video Output with a Simple Circuit
Building a Reliable SCSI Terminator for the X68000 External Bus
The Sharp X68000 remains unusually rewarding to maintain because its storage, expansion, and peripheral interfaces are accessible to hands-on repair. SCSI is a…
Upgrading the X68000 RAM to 12MB with Custom SIMMs
The Sharp X68000 remains remarkably capable for a computer designed in the late 1980s, but its original memory configuration can become restrictive quickly.…
Restoring the X68000 Mouse Ball and Rollers
A working mouse is easy to overlook when restoring a Sharp X68000. The computer may boot, display graphics, and load software while its original pointing…
Building a power supply tester for the X68000 PSU
The power supply is one of the most important parts of any Sharp X68000 restoration. A machine may appear completely dead because of a failed fuse, dried…
Repairing X68000 Floppy Drive Track Alignment
A misaligned floppy drive can make an otherwise healthy Sharp X68000 appear to have a serious software or motherboard fault. Disks may boot intermittently,…
Adding a Fan Speed Controller for Quiet X68000 Operation
The Sharp X68000 remains an enjoyable computer to use, but its original cooling system can become the loudest part of a modern retrocomputing setup. Ageing…
Turning the X68000 Into a MIDI Sequencer
The Sharp X68000 is often remembered as a graphics-heavy Japanese home computer, but its usefulness extends well beyond arcade conversions and desktop…
Restoring an X68000 Front Panel Without Losing Its Character
The Sharp X68000 is immediately recognizable by its tall twin-tower form, dark front panels, and crisp Japanese lettering. When the paint has faded, the…
Installing a Wi-Fi module on the X68000 via serial or parallel
The Sharp X68000 was designed for an era of telephone modems, local networks, and removable disks rather than modern wireless networking. Even so, its…
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.