mirror of
https://github.com/safiire/n65.git
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140 lines
3.4 KiB
Ruby
140 lines
3.4 KiB
Ruby
gem 'minitest'
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require 'minitest/autorun'
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require 'minitest/unit'
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require_relative '../assembler_6502.rb'
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class TestAssembler < MiniTest::Test
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def setup
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## Remember the modes which can use 16-bit absolute labels are:
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## - absolute
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## - absolute_x
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## - absolute_y
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## The JMP instruction can use 16-bit labels
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## - absolute
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## - indirect (it is the only indirect instruction)
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##
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## The Branching instructions can use labels, but they are all relative 8-bit addresses
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end
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def test_adc
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asm = <<-'ASM'
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ADC #$FF ; Immediate
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label:
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ADC $FF ; Zero Page
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ADC $FF, X ; Zero Page X
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ADC $FFFF ; Absolute
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ADC $FFFF, X ; Absolute X
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ADC $FFFF, Y ; Absolute Y
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ADC label ; Absolute Label
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ADC label, X ; Absolute X Label
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ADC label, Y ; Absolute Y Label
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ADC ($FF, X) ; Indirect X
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ADC ($FF), Y ; Indirect Y
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ASM
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assembler = Assembler6502::Assembler.new(asm)
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correct = %w{69 ff 65 ff 75 ff 6d ff ff 7d ff ff 79 ff ff 6d 02 06 7d 02 06 79 02 06 61 ff 71 ff}
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assert_equal(correct, assembler.hexdump)
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end
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def test_and
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asm = <<-'ASM'
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AND #$FF ; Immediate
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label:
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AND $FF ; Zero Page
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AND $FF, X ; Zero Page X
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AND $FFFF ; Absolute
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AND $FFFF, X ; Absolute X
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AND $FFFF, Y ; Absolute Y
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AND label ; Absolute Label
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AND label, X ; Absolute X Label
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AND label, Y ; Absolute Y Label
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AND ($FF, X) ; Indirect X
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AND ($FF), Y ; Indirect Y
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ASM
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assembler = Assembler6502::Assembler.new(asm)
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correct = %w{29 ff 25 ff 35 ff 2d ff ff 3d ff ff 39 ff ff 2d 02 06 3d 02 06 39 02 06 21 ff 31 ff}
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assert_equal(correct, assembler.hexdump)
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end
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def test_asl
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asm = <<-'ASM'
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ASL ; Implied
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label:
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ASL $FF ; Zero Page
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ASL $FF, X ; Zero Page X
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ASL $FFFF ; Absolute
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ASL $FFFF, X ; Absolute X
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ASL label ; Absolute Label
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ASL label, X ; Absolute X Label
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ASM
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assembler = Assembler6502::Assembler.new(asm)
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correct = %w{0a 06 ff 16 ff 0e ff ff 1e ff ff 0e 01 06 1e 01 06}
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assert_equal(correct, assembler.hexdump)
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end
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def test_bit
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asm = <<-'ASM'
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BIT $FF ; Zero Page
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label:
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BIT $FFFF ; Absolute
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BIT label ; Absolute
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ASM
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assembler = Assembler6502::Assembler.new(asm)
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correct = %w{24 ff 2c ff ff 2c 02 06}
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assert_equal(correct, assembler.hexdump)
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end
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def test_branches
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asm = <<-'ASM'
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LDX #$08
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decrement:
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DEX
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STX $0200
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CPX #$03
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BNE decrement
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STX $0201
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BPL decrement
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BMI decrement
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BVC decrement
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BVS decrement
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BCC decrement
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BCS decrement
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BEQ decrement
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BRK
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ASM
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assembler = Assembler6502::Assembler.new(asm)
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correct = %w{a2 08 ca 8e 00 02 e0 03 d0 f8 8e 01 02 10 f3 30 f1 50 ef 70 ed 90 eb b0 e9 f0 e7 00}
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assert_equal(correct, assembler.hexdump)
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end
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def test_stack_instructions
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asm = <<-'ASM'
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TXS
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TSX
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PHA
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PLA
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PHP
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PLP
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NOP
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ASM
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assembler = Assembler6502::Assembler.new(asm)
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correct = %w{9a ba 48 68 08 28 ea}
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assert_equal(correct, assembler.hexdump)
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end
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end
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