I am very new to C, it's my second high-level programming language after Java. I have gotten most of the basics down, but for whatever reason I am unable to write a single character to screen memory.

This program is compiled using Turbo C for DOS on an Am486-DX4-100 running at 120mhz. The graphics card is a very standard VLB Diamond Multimedia Stealth SE using a Trio32 chip.

For an OS I am running PC-DOS 2000 with an ISO codepage loaded. I am running in standard MDA/CGA/EGA/VGA style 80 column text mode with colour.

Here is the program as I have it written:

```
#include <stdio.h>

int main(void) {
    unsigned short int *Video = (unsigned short int *)0xB8000;
    *Video = 0x0402;
    getchar();
    return 0;
}

```

As I stated, I am very new to C, so I apologize if my error seems obvious, I was unable to find a solid source on how to do this that I could understand.

To my knowledge, in real mode on the x86 platform, the screen memory for text mode starts at 0xB8000. Each character is stored in two bytes, one for the character, and one for the background/foreground. The idea is to write the value 0x0402 (which should be a red smiling face) to 0xB8000. This should put it at the top left of the screen.

I have taken into account the possibility that the screen may be scrolling, and thus immediately removing my character upon execution in two ways. To resolve this issue, I have tried:

* Repeatedly write this value using a loop
* Write it a bit further down.

I can read and print the value I wrote to memory, so it's obviously still somewhere in memory, but for whatever reason I do not get anything onscreen. I'm obviously doing something wrong, however I do not know what could be the issue. If any other details are needed, please ask. Thank you for any possible help you can give.