bootloader.asm

bits 16           ; Use 16-bit mode (the state a PC starts in)
[org 0x7c00]

mov ah, 0x0e      ; BIOS teletype function to print a character
          ; Call BIOS video interrupt

%include "drivers/keyboard.asm"
%include "drivers/mouse.asm"
%include "drivers/disk.asm"
%include "drivers/network.asm"



call net_card_detect
call read_disk
call keylog
call mouse_handler
call update_cursor

[org 0x7c00]
bits 16

start:
    ; 1. Set up segment registers and stack
    xor ax, ax
    mov ds, ax
    mov es, ax
    mov ss, ax
    mov sp, 0x7c00

    ; 2. Load the kernel from disk to 0x1000:0x0000
    mov ah, 0x02    ; BIOS read sectors function
    mov al, 10      ; Number of sectors to read (increase if kernel is large)
    mov ch, 0x00    ; Cylinder 0
    mov dh, 0x00    ; Head 0
    mov cl, 0x02    ; Start at Sector 2 (Sector 1 is the bootloader)
    ; DL is already set to the boot drive by the BIOS

    mov bx, 0x1000  ; Target Segment
    mov es, bx
    mov bx, 0x0000  ; Target Offset (ES:BX = 0x1000:0x0000)
    int 0x13        ; Call BIOS
    jc disk_err   ; If carry flag is set, read failed

    ; 3. Jump to the kernel
    jmp 0x1000:0x0000

disk_err:
    mov ah, 0x0e
    mov al, 'E'
    int 0x10        ; Print 'E' if disk read fails
    jmp $


call 0x1000:0x0000 ; Kernel init

jmp $            ; Jump to current address (infinite loop) to stop execution

times 510-($-$$) db 0 ; Fill the rest of the 512 bytes with zeros
dw 0xaa55         ; The "magic number" that tells BIOS this disk is bootable