waking up processes on external input

[Richard Tonge <rtonge90@xxxxxxxxxxx>]

My current understanding is that on the transputer, processes were not members of the process queue when they were waiting for input from the external links. This would mean that whenever input arrived, some mechanism would have to add to the queue any process waiting on the link.

Was this mechanism was part of the hardware, or was it done with a software interrupt handler?

Thanks,

Richard Tonge
Ageia Technologies inc.