QT Computer Systems SYS-I6
[Vin6]
The QT Computer Systems SYS-I6 was a notable Canadian-made minicomputer recognized for its advanced multi-user capabilities, allowing several users to work on the system simultaneously-a valuable feature in the era before widespread personal computing. Its claim to fame lies in its support for multi-user environments, which made it an important tool for organizations needing shared computing resources, and it stands out as a rare example of a domestically produced computer in Canada’s early computing history.
- Manufacturer: QT Computer Systems, Inc. (based in Ottawa)

- Released: early 1980s
- Type: Industrial Computer
- Cost at release: ~$18,000 (adjusted for inflation)
- Cost with peripherals: ~$28,000 (adjusted for inflation)
- MIPS: 0.7 – 1.0
- Hardware Specifications
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- Processor: 16-bit Intel 8086 microprocessor (CPU)
- Memory: 32 KB dynamic RAM, expandable up to 32 KB on-board, Up to 16 KB user-installable ROM (in 2K, 4K, or 8K increments)
- 24 programmable parallel I/O lines via Intel 8255A PPI
- RS-232C serial I/O port with Intel 8251A USART
- Notables
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- The QT Computer Systems SYS-I6 was one of the few Canadian-designed and manufactured minicomputers, giving it a unique place in the nation’s tech history.
- It was notable for its modular, multi-user design, which allowed several users to operate the system simultaneously-a rare feature for its era.
- The system was sometimes referred to as the “SYS-I6” or “QT SYS-I6” in Canadian computing circles.
- Its use of the Intel 8086 processor and CP/M operating system made it compatible with a wide range of business and development software, enhancing its versatility.
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