LOOKUP Index, Value0, {Value1, Value2, ...} Variable

Function
Find the value at location Index and store it in ByteVar. If Index exceeds the highest index value of the items in the list ByteVar is left unaffected.

• Index  is a byte variable indicating the list item to retrieve. The first Value is at Index 0.
• Values  are variables or constants.
• Variable  is a byte or word variable that will be set to the value at the Index location.

Explanation
LOOKUP retrieves an item from a list based on the item's position, Index, in the list. For example:

  idx = 3
  LOOKUP idx, $00, $01, $02, $04, $08, $10, $20, $40, $80, LEDs

In this example, the variable called LEDs will be set to $04 as this value appears at index position three in the values list.

Related instructions: LOOKDOWN and READ