LEA: M68K instruction reference

leaLoad effective address 
Computes the effective address of the first operand and stores it in an address register.
Size .l
Used in trap #15 and its tasksM68K assembly
Exceptions and the vector tableM68K assembly
Interrupts and cyclesM68K assembly
Fill an array with the numbers from 1 to 10M68K assembly
Sum of an arrayM68K assembly
The largest elementM68K assembly
Length of a stringM68K assembly
Reverse a string in placeM68K assembly
Bubble sortM68K assembly
A jump tableM68K assembly
 
XNZVC –––––
Leaves every flag unchanged
Forms  lea ,   
Operands <ea> An operand using one of the addressing modes listed for this form. The list determines whether it can be a register, memory or an immediate value. With opt p=68020, an allowed d(An,Xn) or d(PC,Xn) mode also permits the corresponding 68020 indexed and memory indirect forms. See 68020 addressing. More
An An address register, a0 to a7; sp is another name for a7. More
lea 4(a0), a1 sets a1 to a0 + 4. It does not read the data at the resulting address. A 68020 memory indirect operand does read a pointer while computing that address: lea ([a0]), a1 loads the long pointer stored at a0.
 org $2000
someLabel: dc.l 0

START:
lea someLabel, a0
lea (a0), a1
lea $3000, a2