THINK TERNARY !!!
Ternary Research Corp.
This adapter "fixes" ZX-Spectrum+2A/+3 to make those models better compatible with old ZX-Spectrum extensions as +D interface. Users reported compatibility of this "fixer" with devices listed below:
Original +D interface
Datel Plus D
Interface 1 (Micro Drive)
Swift Disc II
16-pin DIP is resistor network (8 independent 100 Ohm resistors) to protect data bus. Two diodes (1N914 or 1N4148) make proper bus request to +2A/+3 machine (making OR logic).
Since 2016 version +12V of the machine pre-wired to +9V signal of peripheral board (so no jumper is needed by default to connect for example +D interface to +2A machine).
This board is "Open Hardware" - source files for gEDA and Gerber files for manufacturing are freely available (see link on the right). You can even order 3 bare boards on OSH Park web-site (link to Documentation on the right).
Brian | June 26, 2017
|Shipping Rate||First item||Additional items|
United States Postal Service: First-Class Mail (1 week)
United States Postal Service: Priority Mail (2-3 days)
Padded Flat Rate Envelope
We recognize our top users by making them a Tindarian. Tindarians have access to secret & unreleased features.
We look for the most active & best members of the Tindie community, and invite them to join. There isn't a selection process or form to fill out. The only way to become a Tindarian is by being a nice & active member of the Tindie community!
TERNARY RESEARCH CORPORATION was incorporated in New York State in June 2012 and relocated to Colorado in September 2017. Our goal is to give a chance to balanced ternary electronics. Also we are selling some peripherals for retro computers as ZX-Spectrum.
Usually we ship on the next business day, but sometimes it could be a week or so if board is not yet fully assembled and/or tested.