BRITAIN FLAG in TASM

;Britain Flag in TASM DOS-BOX compile with tlink as com file
include graphics.h

.model small

code segment
assume cs:code
org 100h
start:
    ;Video Mode param: 03h - 80x45 text
    Video_Mode 03h

    ;Reset cursor position to screen space origin
    cursor_to 0, 0

    ;[filling the background] params: color, width, height
    fill_bg 00010001b, 80, 24

    ;Reset cursor position to screen space origin
    cursor_to 0, 0

    ;[here start the diagonal block]
    mov cx, 11
    mov al, 254
    mov bl, 01110111b
    Diagonal_BLock1:
        push dx ;push dx to stack to save old register

        ;part here creates the 12x2 block
        mov ah, 9h
        int 10h
        inc dh
        mov ah, 2h
        int 10h
        mov ah, 9h
        int 10h
        ;added
        mov ah, 9h
        int 10h
        inc dh
        mov ah, 2h
        int 10h
        mov ah, 9h
        int 10h

        pop dx ;retrieve dx
        add dl , 4 ;x spacing
        add dh, 1  ;y spacing
        mov ah, 2h
        int 10h

        ;Comparison to cut the line
        cmp dh, 10
        jne Diagonal_BLock1

    ;cursor position to screen space
    cursor_to 0, 1

    ;[here start the diagonal Red block]
    mov cx, 5
    mov al, 254
    mov bl, 01000100b
    Diagonal_BLockR1:
        push dx ;push dx to stack to save old register
        ;part here creates the 12x2 block
        mov ah, 9h
        int 10h

        pop dx ;retrieve dx
        add dl , 4 ;x spacing
        add dh, 1  ;y spacing
        mov ah, 2h
        int 10h

        ;Comparison to cut the line
        cmp dh, 10
        jne Diagonal_BLockR1

    ;cursor position to screen space
    cursor_to 69, 0

    ;[here start the diagonal block]
    mov cx, 11
    mov al, 254
    mov bl, 01110111b
    Diagonal_BLock2:
        push dx ;push dx to stack to save old register

        ;part here creates the 12x2 block
        mov ah, 9h
        int 10h
        inc dh
        mov ah, 2h
        int 10h
        mov ah, 9h
        int 10h
        ;added
        mov ah, 9h
        int 10h
        inc dh
        mov ah, 2h
        int 10h
        mov ah, 9h
        int 10h

        pop dx ;retrieve dx
        sub dl , 4 ;x spacing
        add dh, 1  ;y spacing
        mov ah, 2h
        int 10h

        ;Comparison to cut the line
        cmp dh, 10
        jne Diagonal_BLock2


    ;cursor position to screen space
    cursor_to 74, 0

    ;[here start the diagonal red block]
    mov cx, 6
    mov al, 254
    mov bl, 01000100b
    Diagonal_BLockR2:
        push dx ;push dx to stack to save old register

        ;draw the line
        mov ah, 9h
        int 10h

        pop dx ;retrieve dx
        sub dl , 4 ;x spacing
        add dh, 1  ;y spacing
        mov ah, 2h
        int 10h

        ;Comparison to cut the line
        cmp dh, 10
        jne Diagonal_BLockR2

    ;cursor position to screen space
    cursor_to 0, 23

    ;[here start the diagonal block]
    mov cx, 11
    mov al, 254
    mov bl, 01110111b
    Diagonal_BLock3:
        push dx ;push dx to stack to save old register

        ;part here creates the 12x2 block
        mov ah, 9h
        int 10h
        dec dh
        mov ah, 2h
        int 10h
        mov ah, 9h
        int 10h
        ;added
        mov ah, 9h
        int 10h
        dec dh
        mov ah, 2h
        int 10h
        mov ah, 9h
        int 10h

        pop dx ;retrieve dx
        add dl , 4 ;x spacingm
        sub dh, 1  ;y spacing
        mov ah, 2h
        int 10h

        ;Comparison to cut the line
        cmp dh, 10
        jne Diagonal_BLock3

    ;cursor position to screen space
    cursor_to 0, 23

    ;[here start the diagonal block]
    mov cx, 6
    mov al, 254
    mov bl, 01000100b
    Diagonal_BLockR3:
        push dx ;push dx to stack to save old register

        ;part here creates the 12x2 block
        mov ah, 9h
        int 10h

        pop dx ;retrieve dx
        add dl , 4 ;x spacingm
        sub dh, 1  ;y spacing
        mov ah, 2h
        int 10h

        ;Comparison to cut the line
        cmp dh, 10
        jne Diagonal_BLockR3


    ;cursor position to screen space
    cursor_to 69, 23

    ;[here start the diagonal block]
    mov cx, 11
    mov al, 254
    mov bl, 01110111b
    Diagonal_BLock4:
        push dx ;push dx to stack to save old register

        ;part here creates the 12x2 block
        mov ah, 9h
        int 10h
        dec dh
        mov ah, 2h
        int 10h
        mov ah, 9h
        int 10h
        ;added
        mov ah, 9h
        int 10h
        dec dh
        mov ah, 2h
        int 10h
        mov ah, 9h
        int 10h

        pop dx ;retrieve dx
        sub dl , 4 ;x spacingm
        sub dh, 1  ;y spacing
        mov ah, 2h
        int 10h

        ;Comparison to cut the line
        cmp dh, 10
        jne Diagonal_BLock4

    ;cursor position to screen space
    cursor_to 74, 22

    ;[here start the diagonal RED block]
    mov cx, 6
    mov al, 254
    mov bl, 01000100b
    Diagonal_BLockR4:
        push dx ;push dx to stack to save old register

        ;part here creates the 12x2 block
        mov ah, 9h
        int 10h
        mov cx, 5

        pop dx ;retrieve dx
        sub dl , 4 ;x spacingm
        sub dh, 1  ;y spacing
        mov ah, 2h
        int 10h

        ;Comparison to cut the line
        cmp dh, 10
        jne Diagonal_BLockR4


    ;move  cursor to x-35 to draw center line
    cursor_to 35, 0

    ;[here starts the cross]
    mov cx, 10
    mov al, 254
    mov bl, 01110111b
    CenterLine:
        mov ah, 2h
        int 10h
        mov ah, 9h
        int 10h
        inc dh
        cmp dh,24
        jne CenterLine

    cursor_to 0, 9

    mov cx, 80
    mov al, 254
    mov bl, 01110111b
    MiddleLine:
        mov ah, 2h
        int 10h
        mov ah, 9h
        int 10h
        inc dh
        cmp dh,15
        jne MiddleLine

    cursor_to 36, 0

    mov cx, 8
    mov al, 254
    mov bl, 01000100b
    CenterLineR:
        mov ah, 2h
        int 10h
        mov ah, 9h
        int 10h
        inc dh
        cmp dh,24
        jne CenterLineR

    cursor_to 0, 10

    mov cx, 80
    mov al, 254
    mov bl, 01000100b
    MiddleLineR:
        mov ah, 2h
        int 10h
        mov ah, 9h
        int 10h
        inc dh
        cmp dh,14
        jne MiddleLineR

    ;move cursor to the end
    cursor_to 0, 23

    ;[Exiting program]
    mov ah, 4ch
    mov al, 0h
    int 21h
    code ends
    end start