> The 924 should be the same as a 955 keyboard. There seemed to be two
> compatible types of the keyboard - an older
> thicker keyboard (shipped the TS-803 et al, and looks like an enhanced
> 925/950 keyboard), and a newer thinner profile
> keyboard used on later terminals.
>
> From what I've figured out, the 955 uses a 6-pin connector at 9600 baud with
> both Tx and Rx used, and a reset line and
> +12V power. The 925/950 use a 4-pin connector, replaces the Tx to keyboard
> line with a speaker connection, drops the
> reset line, and runs at 1200 baud as compared to the 955 keyboard. The
> keyboard should be the same between the 905,
> 955, 970, TS-803, and some others with the possible difference of some
> legends on keycaps. The TS-802, 800A, 925, and
> 950 use the same keyboard +/- some legends.
>
> Later terminals like the 965 use a 4-pin connector with a different pinout,
> and +5V supply instead of +12V, but still at
> 9600 baud with the same codes as the 970/etc.
>
Alex Riedlmayer has been doing a lot of work on simulating Televideo terminals
in MAME.
There should be a lot of (if cryptic) info on the logic boards and the
high-level or uP simulated
keyboards in the sources.
