I am trying to get the mouse coordinates in dw values, with mx being the mouses x position, and my being the mouses y position, is there any way to do that in the kernel?
I have tried other stuff but it seems to not work and will just show nothing, but will build without errors.
boot.asm:
bits 16
jmp short bootloader_start
nop
OEMLabel db "OS"
BytesPerSector dw 512
SectorsPerCluster db 1
ReservedForBoot dw 1
NumberOfFats db 2
RootDirEntries dw 224
LogicalSectors dw 2880
MediumByte db 0f0h
SectorsPerFat dw 9
SectorsPerTrack dw 18
Sides dw 2
HiddenSectors dd 0
LargeSectors dd 0
DriveNo dw 0
Signature db 41
VolumeID dd 00000000h
VolumeLabel db " "
FileSystem db "FAT12 "
bootloader_start:
mov ax, 07c0h
add ax, 544
cli
mov ss, ax
mov sp, 4096
sti
mov ax, 07c0h
mov ds, ax
cmp dl, 0
je no_change
mov [bootdev], dl
mov ah, 8
int 13h
jc fatal_disk_error
and cx, 3fh
mov [SectorsPerTrack], cx
movzx dx, dh
add dx, 1
mov [Sides], dx
no_change:
mov eax, 0
floppy_ok:
mov ax, 19
call l2hts
mov si, buffer
mov bx, ds
mov es, bx
mov bx, si
mov ah, 2
mov al, 14
pusha
read_root_dir:
popa
pusha
stc
int 13h
jnc search_dir
call reset_floppy
jnc read_root_dir
jmp reboot
search_dir:
popa
mov ax, ds
mov es, ax
mov di, buffer
mov cx, word [RootDirEntries]
mov ax, 0
next_root_entry:
xchg cx, dx
mov si, kern_filename
mov cx, 11
rep cmpsb
je found_file_to_load
add ax, 32
mov di, buffer
add di, ax
xchg dx, cx
loop next_root_entry
mov si, file_not_found
call print_string
jmp reboot
found_file_to_load:
mov ax, word [es : di + 0fh]
mov word [cluster], ax
mov ax, 1
call l2hts
mov di, buffer
mov bx, di
mov ah, 2
mov al, 9
pusha
read_fat:
popa
pusha
stc
int 13h
jnc read_fat_ok
call reset_floppy
jnc read_fat
fatal_disk_error:
mov si, disk_error
call print_string
jmp reboot
read_fat_ok:
popa
mov ax, 2000h
mov es, ax
mov bx, 0
mov ah, 2
mov al, 1
push ax
load_file_sector:
mov ax, word [cluster]
add ax, 31
call l2hts
mov ax, 2000h
mov es, ax
mov bx, word [pointer]
pop ax
push ax
stc
int 13h
jnc calculate_next_cluster
call reset_floppy
jmp load_file_sector
calculate_next_cluster:
mov ax, [cluster]
mov dx, 0
mov bx, 3
mul bx
mov bx, 2
div bx
mov si, buffer
add si, ax
mov ax, word [ds:si]
or dx, dx
jz even
odd:
shr ax, 4
jmp short next_cluster_cont
even:
and ax, 0fffh
next_cluster_cont:
mov word [cluster], ax
cmp ax, 0ff8h
jae end
add word [pointer], 512
jmp load_file_sector
end:
pop ax
mov dl, byte [bootdev]
jmp 2000h:0000h
reboot:
mov ax, 0
int 16h
mov ax, 0
int 19h
print_string:
pusha
mov ah, 0eh
.repeat:
lodsb
cmp al, 0
je .done
int 10h
jmp short .repeat
.done:
popa
ret
reset_floppy:
push ax
push dx
mov ax, 0
mov dl, byte [bootdev]
stc
int 13h
pop dx
pop ax
ret
l2hts:
push bx
push ax
mov bx, ax
mov dx, 0
div word [SectorsPerTrack]
add dl, 01h
mov cl, dl
mov ax, bx
mov dx, 0
div word [SectorsPerTrack]
mov dx, 0
div word [Sides]
mov dh, dl
mov ch, al
pop ax
pop bx
mov dl, byte [bootdev]
ret
kern_filename db "KERNEL BIN"
disk_error db "Floppy error! Press any key...", 0
file_not_found db "KERNEL.BIN not found!", 0
bootdev db 0
cluster dw 0
pointer dw 0
times 510-($-$$) db 0
dw 0aa55h
buffer:
kernel.asm: (Hello World)
bits 16
[org 0]
mov ax, cs
mov ds, ax
mov es, ax
mov ax, 0x7000
mov ss, ax
mov sp, ss
start:
pusha
mov ah, 00h
mov al, 03h
int 10h
popa
mov si, msg
call print_string
jmp $
print_string:
pusha
mov ah, 0eh
.repeat:
lodsb
cmp al, 0
je .done
int 10h
jmp short .repeat
.done:
popa
ret
msg db 'Hello World!', 0
ret
