Gemini Challenger
The Gemini Challenger was a Motorola 68000 based computer, released in 1985 and designed by Gemini Microcomputers based in Chesham.[1][2][3] This was Gemini's first non Z80 computer and their last.[4]
| Manufacturer | Gemini |
|---|---|
| Type | Microcomputer |
| Release date | 1985 |
| Lifespan | 1987 |
| Introductory price | £4,750 |
| Media | 5.25" 1.2 MB floppy disc |
| Operating system | MBOS, Mirage, TDI P-system, CP/M |
| CPU | Motorola 68000 @ 12 MHz |
| Memory | 512 KB |
| Storage | Hard disks (20 to 70 MB) |
| Display | Composite BNC, RF RCA |
| Graphics | 768 x 576 @ 16 to 16 million colours; 1024 x 1024 @ 64 colours with optional HD63484 based video card |
| Connectivity | SCSI, Parallel, 2 x Serial RS232, 4 x 68K expansion slots |
It was designed to look like an ordinary PC-compatible computer, with a Wyse WY-50 remote terminal for monitor.[2] Four operating systems were available (MBOS, aimed for business and supporting multiuser; Mirage, another multiuser OS; TDI p-System, a version of UCSD p-System including Pascal; CP/M 68k), along with an advanced optional graphic card (based on the Hitachi HD63484) with a maximum resolution of 1024 x 1024 pixels and 16 million available colours.[2]
References
- "Gemini". nascom.info - Information on the Nascom & Gemini computers. 18 March 2011.
- "Challenger Gemini". www.old-computers.com. Retrieved 2022-10-31.
- "Glasgow University Places Order with Gemini Computer Systems". 14 January 1988.
- Starr, Michael; Chapple, Craig (9 July 2008). VINTROPEDIA - Vintage Computer and Retro Console Price Guide 2009. ISBN 9781409212775.
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