Variations of the Mod 8-2 TTY Board
C-MOD 8-2P I/O TTY BOARD
The original Mod 8-2 board did not provide for parallel input and output, nor did it provide for serial output other than in software, or for RS232/RS232C output.
Celetron (Mini Micro Mart), created a new version of this board that provided the an 8-bit parallel I/O port, handshake signals (to permit operation with a TV Typewriter II), an optional UART for hardware serial to parallel/parallel to serial conversion and a TTY current loop/RS232C interface.
If you have any information on this board (pictures etc.) please let me know.
The original Mod 8-2 board did not provide for parallel input and output, nor did it provide for serial output other than in software, or for RS232/RS232C output.
Celetron (Mini Micro Mart), created a new version of this board that provided the an 8-bit parallel I/O port, handshake signals (to permit operation with a TV Typewriter II), an optional UART for hardware serial to parallel/parallel to serial conversion and a TTY current loop/RS232C interface.
If you have any information on this board (pictures etc.) please let me know.
Mod 8-2 TTY Modification #1
This is my TTY board. It appears to have been modified to provide an interface to a cassette recorder. Unfortunately none of the ICs were present, so I have no idea what it was for.
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Mod 8-2 TTY Modification #2
This is a modification done on a board owned by Gabriel Nemeth. At this stage we do not know what it was for. For comparison is another unmodified board (Gabriel Nemeth).
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Last updated on March 15, 2019.