ORG 00h
BITS 16
root_buffer equ 24000h
data_buffer equ 26000h

start:
   mov si, boot_message
   call os_print_string

   call disk_load_root ; Loads the root directory into disk_buffer

   ; Physical address = (segment * 16) + offset
   mov si, file_name
   call disk_load_file

   call os_start_cli
   hlt

halt:
   jmp halt

boot_message: db 'OK] Kernel successfully loaded!\n\n', 0
file_name: db 'hello.cws', 0

; Define Fat12 header
bdb_oem:                    db 'MSWIN4.1' ; ignore
bdb_bytes_per_sector:       dw 200h ; = 512d
bdb_sectors_per_cluster:    db 01h ; sector = cluster
bdb_reserved_sectors:       dw 01h
bdb_fat_count:              db 02h  ; We've got a fat1 and fat2
bdb_dir_entries_count:      dw 0E0h ; Maximum number of root directory entries
bdb_total_sectors:          dw 0B40h ; = 2880d
bdb_media_descriptor_type:  db 0F0h ; ignore
bdb_sectors_per_fat:        dw 09h
bdb_sectors_per_track:      dw 12h ; = 18d
bdb_number_of_heads:        dw 02h ; top and bottom of the floppy disk
bdb_hidden_sectors:         dd 0 ; ignore
bdb_large_sector_count:     dd 0 ; total sector count for fat32 (0 for fat12 or fat16)

; extended boot record
ebr_drive_number:           db 0 ; ignore
                            db 0 ; ignore
ebr_signature:              db 29h ; boot signature, indicates that the next three fields are present (0x29)
ebr_volume_id:              db 12h, 34h, 56h, 78h ; unique id for volume tracking
ebr_volume_label:           db 'CrawShaw OS' ; must be 11 bytes
ebr_system_id:              db 'FAT12   ' ; must be 8 bytes

; ------------------------------------------------------------------
; FEATURES -- Code to pull into the kernel
	%INCLUDE "source/kernel/features/text.asm"
	%INCLUDE "source/kernel/features/keyboard.asm"
	%INCLUDE "source/kernel/features/cli.asm"
	%INCLUDE "source/kernel/features/power.asm"
	%INCLUDE "source/kernel/features/strings.asm"
	%INCLUDE "source/kernel/features/graphics.asm"
    %INCLUDE "source/kernel/features/disk.asm"
    %INCLUDE "source/kernel/features/math.asm"
; GAMES -- Games that I wrote for it
	%INCLUDE "source/kernel/games/pong.asm"