anchor.diff:      let ClockRasterCounter () =
           let mac = GetMemoryAccessCycle()
           IncrementRasterLineCounter()
  -        match GetMemoryAccessCycle() with
  +
  +        match mac with
               | 0 | 2 ->
                   // cycle 55-56
                   if mac = 0 then
  
positive.code:         mobMobCollision.[5] <- false
          mobMobCollision.[6] <- false
          mobMobCollision.[7] <- false
          oldValue
  
      // Sprite-background Collision (1F)
      let mobDataCollision = Array.create 8 false
      let GetMobDataCollision () =
          (if mobDataCollision.[0] then 0x01 else 0x00) |||
  
negative.code:     // Sprite shift registers
      let mobShiftRegister = Array.create 8 0
      let mobShiftRegisterEnable = Array.create 8 false
      let mobShiftRegisterOutput = Array.create 8 0
  
      // Display/Idle state
      let mutable displayState = false
  