Sharp X1
The X1 (エックスワン, Ekkusuwan), sometimes called the Sharp X1 or CZ-800C, is a series of home computers released by Sharp Corporation from 1982 to 1988. It is based on a Zilog Z80 CPU.
Sharp X1 Hu-BASIC start screen | |
| Manufacturer | Sharp Corporation |
|---|---|
| Type | Home computer |
| Release date | 1982 |
| Introductory price | ¥155,000 |
| Discontinued | 1988 |
| Media | Compact Cassette or Floppy disk |
| Operating system | Hu-BASIC, CP/M |
| CPU | Sharp Z80 A @ 4 MHz |
| Memory | 64 KB RAM, 4-48KB Video RAM, 6KB ROM |
| Removable storage | Cassette tape, Floppy discs |
| Display | Text: 40 / 80 x 25 characters; Graphics: 320 x 200 / 640 x 200; 8 colors |
| Sound | General Instrument AY-3-8910 or Yamaha YM2149; YM2151 (later revisions) |
| Input | Keyboard, Joysticks |
| Controller input | Two joysticks |
| Connectivity | Printer port, Joystick port, Audio out |
| Power | Built in PSU |
| Predecessor | Sharp MZ series |
| Successor | X68000 series |
The RGB display monitor for the X1 had a television tuner, and a computer screen could be superimposed on TV. All the TV functions could be controlled from a computer program. The character font was completely programmable (PCG) with 4-bit color, and was effectively used in many games. The entirety of the VRAM memory was mapped on to the I/O area, so it was controlled without bank switching. These features made the X1 very powerful for game software.
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