Quote:
Originally Posted by fgh
Figured out the KBSE in the patch cable, it just goes to gnd
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If I look at the CDTV schematics, it does indeed look like KBSE is supposed to be connected to ground when a keyboard is connected (it is pulled up to +5V with a 4.7k resistor).
However, if I do connect KBSE to ground, the IR remote stops working completely - none of the 0-9 buttons generate keypresses, it doesn't generate mouse movements in mouse mode and doesn't work in games in joystick mode.
Feels like a very strange feature, why would one want to disable the IR interface?
Does a real CDTV keyboard connect KBSE to ground (and thereby disables the IR interface)?