hieuk09

Display

• PPU has 3x cycle speed compare to CPU
• PPU can render upto 64 sprite
• Sprite could be 8x16 or 8x8
• Color is specified by 2 bit in the pattern table, and 2 bit in the attribute table

Instruction set

• Instruction set is based on addressing mode
• The opcode is a 4 byte number

hieuk09

require 'rom'
require 'rom-repository'

rom = ROM.container(:sql, 'sqlite::memory') do |conf|
  conf.default.create_table(:users) do
    primary_key :id
    column :name, String, null: false
  end

  class Users < ROM::Relation[:sql]