The Sharp X68000 has a distinctive tower-shaped case that deserves protection from dust, sunlight, and accidental spills. Its vertical form is practical for…
Stories
Creating a DIY Dust Cover for the Sharp X68000
Installing a Second Floppy Drive in the X68000
Adding a second floppy drive to an X68000 can make disk copying, software testing, and archival work much easier. A machine with two working drives can read a…
Repairing brightness control on the X68000 CRT monitor
The Sharp X68000 is often remembered for its sharp RGB output, distinctive tower cases, and excellent Japanese computer games, but the original CRT monitors…
Adding a Hardware Volume Knob to the X68000 Audio Output
The Sharp X68000 has a distinctive sound that remains one of the most enjoyable parts of using the computer today. Its FM synthesis, sampled effects, and game…
Converting X68000 ADPCM Samples Into Editable WAV Files
The Sharp X68000 has a distinctive sound that comes from more than its FM synthesizer channels. Its ADPCM hardware adds sampled drums, speech, effects, and…
Setting up a dial-up BBS on the X68000
A dial-up bulletin board system turns the Sharp X68000 into more than a machine for running games and demos. With a serial port, suitable communications…
Building a Passive Cooling Solution for the X68000
The Sharp X68000 was designed for an era when a small fan and a warm metal chassis were accepted parts of everyday computing. Decades later, those fans may be…
Building a Parallel Port Breakout for the X68000 Expansion Bus
The Sharp X68000 is an unusually approachable platform for hardware experimentation. Its expansion bus exposes enough of the system’s address, data, and…
Repairing Cracked Solder Joints on the X68000 Motherboard
The Sharp X68000 is remarkably serviceable for a computer from the late 1980s, but age changes the behavior of every mechanical and electrical connection…
Simulating the X68000 with a custom HDL core
Recreating a Sharp X68000 in programmable logic is more than placing a 68000-compatible processor inside an FPGA. The original machine is a collection of…
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.