Class: AVR::SP

Inherits:
RegisterPair show all
Extended by:
T::Sig
Defined in:
lib/avr/register/sp.rb

Instance Attribute Summary

Attributes inherited from RegisterPair

#h, #l

Attributes inherited from Register

#cpu

Attributes inherited from Value

#name, #value

Instance Method Summary collapse

Methods inherited from RegisterPair

#format, #value, #value=

Methods inherited from Value

#format, #inspect, #to_i, #to_s, #value_hex

Constructor Details

#initialize(cpu, l_memory_byte, h_memory_byte, initial_value) ⇒ SP

Returns a new instance of SP.



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# File 'lib/avr/register/sp.rb', line 16

def initialize(cpu, l_memory_byte, h_memory_byte, initial_value)
  super(
    cpu,
    MemoryByteRegister.new(cpu, 'SPL', l_memory_byte),
    MemoryByteRegister.new(cpu, 'SPH', h_memory_byte),
    'SP'
  )
  self.value = initial_value
end

Instance Method Details

#adjust(offset) ⇒ Object 



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# File 'lib/avr/register/sp.rb', line 27

def adjust(offset)
  self.value += offset
end

#decrement(by = 1) ⇒ Object 



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# File 'lib/avr/register/sp.rb', line 32

def decrement(by = 1)
  adjust(-by)
end

#increment(by = 1) ⇒ Object 



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# File 'lib/avr/register/sp.rb', line 37

def increment(by = 1)
  adjust(+by)
end