monitor.inc

%ifndef __MONITOR_LIB__
%define __MONITOR_LIB__

SystemName db "SimpleOS", 0

BackWidth dw 0000h
BackHeight dw 0000h
BackColor db 52
Pagination db 0
CursorX db 15
CursorY db 12


VGA.SetVideoMode:
    mov ah, 00h
    mov al, 13h
    int 10h

    mov ax, 320
    mov word[BackWidth], ax

    mov ax, 200
    mov word[BackHeight], ax

    call DrawPixelConfig
ret


DrawPixelConfig:
    mov ah, 0Ch
    mov al, [BackColor]
    mov cx, 0 ; Coluna (X)
    mov dx, 0 ; Linha (Y)
ret

; Pinta fundo da tela
DrawBackground:
    int 10h
    inc cx
    cmp cx, word[BackWidth]
    jne DrawBackground
    mov cx, 0
    inc dx
    cmp dx, word[BackHeight]
    jne DrawBackground
    mov dx, 0
ret

PrintMainString:
    mov ah, 09h
    mov bh, [Pagination]
    mov bl, 44
    mov cx, 1
    mov al, [si]
    print:
        int 10h
        inc si

        call MoveCursor
        mov ah, 09h
        mov al, [si]
        cmp al, 0
        jne print
ret

MoveCursor:
    mov ah, 02h
    mov bh, [Pagination]
    inc dl
    int 10h
ret

EffectInit:
    start:
        mov dh, [CursorY]
        mov dl, [CursorX]
        call MoveCursor
        mov si, SystemName
        call PrintMainString
ret


%endif