Cls Magic X86 Online

mov ax, 0B800h ; Point to video memory segment mov es, ax xor di, di ; Start at offset 0 mov ax, 0720h ; 07 = White/Black, 20 = Space character mov cx, 2000 ; 80 * 25 = 2000 words rep stosw ; "Magic" happens here: Repeat storing AX into ES:DI Use code with caution.

with a specific character (usually a space).

To clear the screen, programmers use the "Scroll Window Up" function ( AH = 06h ). By setting the number of lines to scroll to zero, the BIOS clears the specified region. cls magic x86

After this, you must manually move the cursor back to the start:

To perform the magic, you simply need to decide between (BIOS interrupts) or raw performance (direct memory access). Both methods reflect the core philosophy of x86: giving the programmer total control over the hardware. mov ax, 0B800h ; Point to video memory

mov ah, 02h ; Set cursor position function mov bh, 00h ; Page number mov dx, 0000h ; Row 0, Column 0 int 10h Use code with caution. Method 2: Direct Video Memory Manipulation (The "Fast" Way)

By writing directly to this memory block, you could clear the screen instantly. Each character on the screen takes up two bytes: The ASCII character. Byte 2: The Attribute (Color). The "Magic" Loop: By setting the number of lines to scroll

Recognizing these interrupt patterns or memory addresses is key to understanding legacy software. Summary: The Recipe for CLS Magic