Proprietary International
131 LaSalle Rd., Streamwood, IL 60103
Owner(s):
Steve Zwaska,
Randy Wear
Products
Expansion unit for ZX81/TS 1000. Promised 64-key auto-repeat big keyboard, 15 colors, 32K RAM onboard, 3 kinds of sound, 33 new BASIC commands, multiple statement and input lines, 6 video pages, high resolution (256×192 pixels) and animation capabilities, user-definable characters and character sets and up to 9 user-definable functions. RS232 and parallel interfaces, two Atari-compatible
ZX81 TS 1000
Articles
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Proprietary International Announces ZT21000TS 1000 Details of their new co-processor for ZX/TS computers, the ZT21000.
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Vendor ReportUpdates from/about Proprietary International, Norris Electronics, SMUG, Gladstone Electronics.
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Wanted: Assembly Language ProgrammersProprietary International needs assembly language programmers for their unreleased ZT21000.