Implements a basic high-level simulation of the codeline between the CTC panel and the actual field equipment.
Changes:
Each code button now controls ONLY the items in its column
Switches can be set without clearing a signal over them
Each codeline can only transmit to or receive from one field station (machine column) at a time
Switch and signal indicator lamps are dark from the time Code is pressed to the time the response is received from the field
Lamps are also dark while receiving a spontaneous code from the field
New CTCColumn control includes signal lever, switch lever, fleet switch, and code button. The same control is used regardless of which items a column has; the unused parts are simply hidden and disabled
Implements a basic high-level simulation of the codeline between the CTC panel and the actual field equipment.
Changes:
Closes #10 Closes #14