U 8086 era DOS ambiyand, text display typically relied on the BIOS and the graphics adapter's built-in character generator rather than any sophisticated font rendering system. The fonts were firmly tied to specific text modes implemented by adapters such as CGA, EGA, or VGA. One of the most common modes was text mode 03h, which presented a 80×25 text grid. Biz o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z. O‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z. Bu dəfə, biz ASCII karikaturni (kilmadi 'A') o‘z pixel data re-defining. VGA-Moda 13 saat PC-Speaker o‘z ASCII və DOS karikatura set ASCII (American Standard Code for Information Interchange) o‘z 7 bit kod, o‘z o‘z karakterlar (letter, digits, punctuation) o‘z 0-127. DOS, standard extended ASCII set (kar o‘z Code Page 437) o‘z 128 karakter (128-255), o‘z box-drawing characters, symbols, and other glyphs used frequently in the DOS world. Text Mode 3h (80 x 25) 8086 DOS-da texti outputda kullani modulardan biri 03h mode. 03h mode, ekranni 80 koloni və 25 rida texti karikatura bölünir. Bu o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z. cell 
 
 
 CGA (Color Graphics Adapter) qaytarda, qalin texti 8x8 pikselin matrisdi (yani o‘zi adaptorlar 8x14 o‘z 9x14 o‘z EGA o‘z 9x16 o‘z VGA). VGA standard 80x25 text modda, hər karakter cell o‘zayda 9 piklik bo‘qdan 16 piklik bo‘qdan o‘zaydan o‘zaydan o‘zaydan o‘zaydan o‘zaydan o‘zaydan o‘zaydan o‘zaydan o‘zaydan. Siz VGA text moduna 9x16 karakter cildini 80x25 xx25 xx25 xx25 x xx400 xx80 x400 x80 x9 pixels x25 x16 pixels x40x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20x20 Neq o‘z? Sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga sizga Step o‘z. Biz o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z: git clone git@github.com:MilesTails01/i8086_boilercode.git
 Do'da qilmizni qilmizni qilmizni qilmizni qilmizni qilmizni qilmizni cd \bin
tar -xf TOOLS.zip
tar -xf DOSBOX.zip

build.bat   // Compile, Link and Start the source
debug.bat   // Starts AFDEBUG and loads the compiled exe
start.bat   // Start the program without rebuilding it
 Men o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z ;   #################################
;   #           ASCII.ASM           #
;   #################################

;   #################################
;   #           STACK               #
;   #################################
STACK SEGMENT PARA STACK
    db 256 dup(0)
STACK ENDS

;   #################################
;   #           DATA                #
;   #################################
DATA SEGMENT PARA 'DATA'
DATA ENDS

;   #################################
;   #           CODE                #
;   #################################
CODE SEGMENT PARA 'CODE'

    ASSUME cs:CODE, ds:DATA, ss:STACK
    mov ax, DATA
    mov ds, ax
    mov ax, STACK
    mov ss, ax
    mov sp, 256

CODE ENDS
 1 qollar Biz o‘z qilmadi qilmidi qilmidi qilmidi qilmidi qilmidi qilmidi. O‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z Biz 8bit o‘z 8bit o‘z 8bit o‘z 8bit o‘z 8bit o‘z 8bit o‘z 16x o‘z 16x o‘z 16x o‘z 16x o‘z 16x o‘z 16x o‘z 16x o‘z 16x o‘z 16x o‘z 16x o‘z 16x o‘z 16x o‘z 16x o‘z 16x o‘z 16x o‘z 16x o‘z 16x o‘z 16x o‘z 16x o‘z 16x o‘z 16x o‘z 16x o‘z 16x o‘z 16x o‘z 16x o‘z 16x o‘z 16x o‘z 16x o‘z 16x o‘z 16x o‘z 16x o‘z 16x o‘z 16x o‘z 16x 0 1 CHAR_DATA   db  010101010b
            db  010101010b
            db  010101010b
            db  010101010b
            db  010101010b
            db  010101010b
            db  010101010b
            db  010101010b
            db  010101010b
            db  010101010b
            db  010101010b
            db  010101010b
            db  010101010b
            db  010101010b
 2 qollar O‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z A PRINT PROC NEAR
    mov ax, 0B800h      ; VGA text mode memory segment
    mov es, ax
    mov di, 0           ; Start at the top-left of the screen
    mov cx, 2000        ; 80x25 screen = 2000 characters
    mov al, 'A'         ; ASCII code for 'A'
    mov ah, 19h         ; Attribute byte (blue on white)
    rep stosw           ; Fill screen with 'A'
    ret
PRINT ENDP
 Tez 3 Biz interrupt 10h (Bios Interrupt) va AH set to 11h. Mən AX, BX, CX, DX, BP parametrini yazadi. REPLACE_ASCII PROC NEAR
    ;   mov ax, 03h         ; Set video mode to text mode (80x25, color)
    ;   int 10h             ; 9x16 font size
    ;
    ;   mov ax, 1112h       ; Force 8x8 font size for character cells
    ;   xor bl, bl          ; RAM block
    ;   int 10h

    ; Change text mode character (int 10h)
    ; AH    = 11h   
    ; BH    = Number of bytes per character
    ; CX    = Number of characters to change
    ; DX    = Starting character to change
    ; ES:BP = Offset of character data

    push ds
    pop es              ; make sure es = ds
    lea bp, CHAR_DATA   ; Pointer to custom font data
    mov ax, 1100h       ; Load user-defined font
    mov bh, 0Eh         ; Number of bytes per character
    xor bl,bl           ; RAM block
    mov cx, 01h         ; Number of characters to replace = 1 for now
    mov dx, 41h         ; Starting character to change (41h = 'A' in ASCII)
    int 10h             ; Call BIOS to load the font

    ret
REPLACE_ASCII ENDP
 4 qollar Optional: Siz o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z. ;) ASCIIPRINT PROC NEAR
    mov ax, 0B800h      ; VGA text mode memory segment
    mov es, ax
    xor di, di          ; Reset offset

    mov cx, 5           ; Total number of characters (0-255)
    mov ah, 4Fh         ; Attribute byte (red on white)
    mov dl, 10          ; Padding on the left (adjust as needed)
    mov dh, 60          ; Total width of the centered line (adjust as needed)
    mov di, 1620        ; Row (10 x 80 + padding) * 2, starting with left padding


PrintLoop:
    stosw               ; Store the character (AL) and attribute (AH)
    inc al              ; Move to the next ASCII character
    dec dh              ; Decrement width counter
    jnz PrintLoop       ; Continue until row width is filled
    add di, 40          ; Move to the next row with padding ((80 - 60) * 2)
    mov dh, 60          ; Reset row width
    loop PrintLoop      ; Repeat for all 256 characters

    ret
ASCIIPRINT ENDP
 Rezultatlar O‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z o‘z. Koda tamam ;   #################################
;   #           ASCII.ASM           #
;   #################################

;   #################################
;   #           STACK               #
;   #################################
STACK SEGMENT PARA STACK
    db 256 dup(0)
STACK ENDS

;   #################################
;   #           DATA                #
;   #################################
DATA SEGMENT PARA 'DATA'
    CHAR_DATA   db  010101010b
                db  010101010b
                db  010101010b
                db  010101010b
                db  010101010b
                db  010101010b
                db  010101010b
                db  010101010b
                db  010101010b
                db  010101010b
                db  010101010b
                db  010101010b
                db  010101010b
                db  010101010b
DATA ENDS

;   #################################
;   #           CODE                #
;   #################################
CODE SEGMENT PARA 'CODE'

    ASSUME cs:CODE, ds:DATA, ss:STACK
    mov ax, DATA
    mov ds, ax
    mov ax, STACK
    mov ss, ax
    mov sp, 256

;   #################################
;   #           MAIN                #
;   #################################

    call REPLACE_ASCII
    call PRINT
    call ASCIIPRINT

    ret

;   =============================
;   |   FUNCTIONS               |
;   =============================

PUBLIC REPLACE_ASCII

REPLACE_ASCII PROC NEAR
    ;   mov ax, 03h         ; Set video mode to text mode (80x25, color)
    ;   int 10h             ; 9x16 font size
    ;
    ;   mov ax, 1112h       ; Force 8x8 font size for character cells
    ;   xor bl, bl          ; RAM block
    ;   int 10h

    ; Change text mode character (int 10h)
    ; AH    = 11h   
    ; BH    = Number of bytes per character
    ; CX    = Number of characters to change
    ; DX    = Starting character to change
    ; ES:BP = Offset of character data

    push ds
    pop es              ; make sure es = ds
    lea bp, CHAR_DATA   ; Pointer to custom font data
    mov ax, 1100h       ; Load user-defined font
    mov bh, 0Eh         ; Number of bytes per character
    xor bl,bl           ; RAM block
    mov cx, 01h         ; Number of characters to replace = 1 for now
    mov dx, 41h         ; Starting character to change (41h = 'A' in ASCII)
    int 10h             ; Call BIOS to load the font

    ret
REPLACE_ASCII ENDP

PRINT PROC NEAR
    mov ax, 0B800h      ; VGA text mode memory segment
    mov es, ax
    mov di, 0           ; Start at the top-left of the screen
    mov cx, 2000        ; 80x25 screen = 2000 characters
    mov al, 'A'         ; ASCII code for 'A'
    mov ah, 19h         ; Attribute byte (blue on white)
    rep stosw           ; Fill screen with 'A'
    ret
PRINT ENDP

ASCIIPRINT PROC NEAR
    mov ax, 0B800h      ; VGA text mode memory segment
    mov es, ax
    xor di, di          ; Reset offset

    mov cx, 5           ; Total number of characters (0-255)
    mov ah, 4Fh         ; Attribute byte (red on white)
    mov dl, 10          ; Padding on the left (adjust as needed)
    mov dh, 60          ; Total width of the centered line (adjust as needed)
    mov di, 1620        ; Row (10 x 80 + padding) * 2, starting with left padding


PrintLoop:
    stosw               ; Store the character (AL) and attribute (AH)
    inc al              ; Move to the next ASCII character
    dec dh              ; Decrement width counter
    jnz PrintLoop       ; Continue until row width is filled
    add di, 40          ; Move to the next row with padding ((80 - 60) * 2)
    mov dh, 60          ; Reset row width
    loop PrintLoop      ; Repeat for all 256 characters

    ret
ASCIIPRINT ENDP

CODE ENDS
END


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