Episode 2: Branching + Sensors

Episode 2 Full Script (Proximity Door and Nighttime lights)

# Define Devices - d0 -> d5
# Blast Door
alias door d0
# Occupancy Sensor
alias proximity d1
# Light
alias light d2
# Daylight Sensor
alias daylight d3

# Define Variables - r0 -> r15
alias isOccupied r0
alias isDaytime r1

# Main Loop
Start:
# Read the occupancy sensor
l isOccupied proximity Activate
# Write the value to the door
s door Open isOccupied
# Read the daylight sensor
l isDaytime daylight Activate
# If isDaytime equal to 0, jump to NightTime
beq isDaytime 0 NightTime
# If isDaytime equal to 1, jump to DayTime
beq isDaytime 1 DayTime
j Start

NightTime:
# If night time, turn light on
s light On 1
j Start

DayTime: # If day, turn light off
s light On 0
j Start

What the IC10 lines do

• l isOccupied proximity Activate

  Reads the proximity sensor's Activate value into isOccupied. This is your occupancy input for the door logic.

• s door Open isOccupied

  Writes the occupancy value directly to the door Open setting. Occupied means open, empty means closed.

• beq isDaytime 0 NightTime

  beq means branch-if-equal. If isDaytime equals 0, execution jumps to NightTime.

• beq isDaytime 1 DayTime

  Second branch path. If isDaytime equals 1, execution jumps to DayTime.

• s light On 1 / s light On 0

  Night branch writes 1 to turn lights on; day branch writes 0 to turn lights off.

• j Start

  Loops back to the start so sensors and outputs update continuously.

Companion Notes

• Name your labels by intent (LightsOn, DoorOpen) to make scripts self-documenting.
• When using multiple IC housings, keep shared behavior conventions consistent (register aliases, update order, loop label names).
• Episode 3 can naturally build from this by introducing timing delays and debouncing for sensor noise.