Class: GBRb::InstructionSet::Sub

Inherits:

Arithmetic

• Object
• Instruction
• Arithmetic
• GBRb::InstructionSet::Sub

Defined in:

lib/gbrb/instruction_set/arithmetic.rb

Direct Known Subclasses

Cp, Sbc

Instance Attribute Summary

Attributes inherited from Instruction

#i, #m, #t

Instance Method Summary

• #call(r, mem, right_value = nil) ⇒ Object
• #initialize(target, m = 1, t = 4, indirect = false, immediates = 0) ⇒ Sub constructor

  A new instance of Sub.

Methods inherited from Arithmetic

#carry?

Methods inherited from Instruction

#carry?, #immediate_count

Constructor Details

#initialize(target, m = 1, t = 4, indirect = false, immediates = 0) ⇒ Sub

Returns a new instance of Sub.

# File 'lib/gbrb/instruction_set/arithmetic.rb', line 102

def initialize target, m=1, t=4, indirect=false, immediates=0
  super
  @op = :-
end

Instance Method Details

#call(r, mem, right_value = nil) ⇒ Object

# File 'lib/gbrb/instruction_set/arithmetic.rb', line 107

def call r, mem, right_value=nil
  super
  r.set_add_sub_flag
end