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.