Simulating TFT LCD (ILI9341) With Proteus V8.3
In proteus 8.3 the ILI9341 tft works only in SPI mode.


It is in official 8.3 update info... check it out.

Steps to make proteus LCD shield simulation working in proteus 8.3 with Arduino UNO and Adafruit ILI3941:


Proteus :: File / Import Project clip Arduino 328
Proteus :: File / Import Project Clip Arduino ILI 9341
TFT LCD Shiled
Download Adafruit 9341 Library https://github.com/adafruit/Adafruit_ILI9341 
Extract downloaded folder into arduino/libraries
Arduino :: Open / Restart Arduino and open Adafruit GraphicTest example
Arduino :: Change the following code, we will map in code arduino pins with what LCD shield needs, note that TFT_RST, can be any pin that is not conflicting, as in proteus LCD shield reset is not mapped

// Use hardware SPI (on Uno, #13, #12, #11) and the above for CS/DC
//Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);
// If using the breakout, change pins as desired
//Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC, TFT_MOSI, TFT_CLK, TFT_RST, TFT_MISO);
Adafruit_ILI9341 tft = Adafruit_ILI9341(5, 6, 11, 13, 19, 12);

Arduino :: Sketch / Export Compiled Library
Proteus :: right click on your Arduino 328 / Edit Properties, in Program Files, browse and select your Compiled TestGrapich library [it will be in sketch folder]
Run simulation and wait a bit, white screen should appear, than all the rest