The Sharp X68000 remains an unusually attractive platform for software testing. Its Motorola 68000 processor, custom graphics hardware, Yamaha sound chips, and…
Stories
Emulating the X68000 With MAME for Software Testing
Preserving the X68000’s Internal Backup SRAM
The Sharp X68000 stores a small amount of information in battery-backed static RAM, allowing settings and other system data to survive when the computer is…
Calibrating X68000 RGB Output for Modern Monitors
The Sharp X68000 was designed for displays that accepted several Japanese computer video standards directly. Modern LCD monitors, HDMI televisions, and…
Rebuilding the X68000 Floppy Drive Belt
The floppy drive is one of the most recognizable parts of the Sharp X68000 experience. Its mechanical activity, loading sounds, and physical disks are closely…
Fixing Flickering CRT Symptoms on the X68000 Display Unit
A flickering screen is one of the more unsettling faults on an original Sharp X68000 setup. The display may flash brighter and darker, lose horizontal…
Upgrading X68000 Memory from 2MB to 4MB with SIP Modules
The Sharp X68000 remains remarkably usable when its memory is expanded beyond the original factory configuration. Increasing RAM from 2MB to 4MB gives later…
Recapping the X68000 Monitor C112 and C114 Series
Sharp X68000 computers are often remembered for their distinctive tower cases, powerful audio hardware, and unusually capable graphics modes. The matching CRT…
Connecting a PS/2 keyboard to the X68000 with a custom adapter
The Sharp X68000 remains remarkably usable when its original keyboard is present, but replacement keyboards can be difficult to find and expensive to ship. A…
Building a compact flash IDE adapter for the X68000
CompactFlash is a practical way to give an X68000 a quiet, removable storage device without relying on aging mechanical hard disks. A CF card consumes little…
Reading the X68000 System BIOS ROM Safely
The Sharp X68000 stores essential startup code in its system BIOS ROM, commonly referred to by owners as the IPL ROM. This firmware initializes the machine,…
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.