Bank Switching and Operating System (BSOS)
Operating system for bank-switched memory on the ZX81/TS 1000. Documented in eight articles in T-S Horizons.
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Timex/Sinclair 1000
Real Time Clock
Clock module with battery back up. Logic signal output with LED status indicator can be used to control external devices based on time independent of the computer. DIP switches allow mapping of the module to the 8-10, 10-12, 12-14 or 14-16K areas of memory.
Amplifier CAD
Computer-aided design tool. Automatically calculate component and circuit values for amplifiers.
Power Supply CAD
Computer-aided design tool. Automatically calculate component and circuit values for power supplies.
Machine Language Helper
Easily enter machine language listings, programs. Convert hex to decimal. Examine ROMs. Manipulate memory any way you can think of; move blocks, bytes; insert, delete ranges of memory. 16K.
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ZAD: Zebra Analog Digital Interface
8-channel analog-to-digital interface for ZX81, TS1000, TS1500, TS2068. Manual includes sample applications and I/O software. 8-bit resolution, 0-5 volt scale range.
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TMS 9918A Video Upgrade
Two board, extensive upgrade that integrates the TMS 9918A video display processor into the ZX81/TS1000. Provides: color multiple graphics resolutions, up to 256×192 pixels up to 32 sprites a SLOW mode almost as fast as FAST mode blink free FAST mode lower case characters instead of inverse upper case Interfaces the TMS 9918A color graphics
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