Sharp X1D

<p>Released alongside the X1C in October 1983, the Sharp X1D adapted the X1 platform to a desktop case with an integrated 3-inch floppy disk drive. The built-in drive offered faster, more convenient program loading than cassette while preserving compatibility with the X1’s Z80-based architecture.</p><p>The unusual 3-inch disk format distinguished the X1D from most of the family, which more commonly used external 5.25-inch drives. It is one of the clearest examples of Sharp experimenting with storage formats during the early Japanese home-computer era.</p>

<h6>Notable Features</h6><ul><li>Integrated 3-inch floppy disk drive in a desktop-style enclosure.</li><li>Retained the X1 family’s programmable characters, colour graphics and sound hardware.</li><li>Provided much faster software access than the cassette-based base configuration.</li></ul><h6>Historical Significance</h6><ul><li>Released in October 1983 as a storage-focused companion to the compact X1C.</li><li>Demonstrates the short-lived Japanese interest in 3-inch floppy media before 3.5-inch disks became dominant.</li></ul><h6>Collector's Notes</h6><ul><li>The 3-inch drive and media are uncommon and can be difficult to service or replace.</li><li>A complete machine with its matching keyboard and original Sharp disks is especially collectible.</li></ul>

Specifications

Technical Information
Name	Sharp X1D
Manufacturer	Sharp
Launched	Saturday, October 1, 1983
Country	Japan
CPU	Sharp Z80A at 4 MHz
Units Sold
Software	X1 software on compatible cassette and disk media
I/O	Printer, joystick, cassette, audio and display connections
Expansion	X1 expansion interfaces
Keyboard	Separate full-size keyboard
Storage	Built-in 3-inch floppy disk drive; cassette support
Sound	AY-3-8910 or compatible three-channel PSG
Display	40 or 80 columns; 320×200 or 640×200 in 8 colours
Video RAM	Text and programmable-character RAM with colour graphics memory
RAM	64KB
CPU Speed	4 MHz