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The board draws itself: no render buffer, no int 21h/09h

The original renders the position into a separate buffer: it walks the board, transforms each square into a printable character, stores it, appends a $ terminator, and prints the whole string with DOS function 09h ( int 21h ). That path costs a buffer pointer setup, the copy loop's store, the terminator write, and, because the buffer lives after the board, a reserved board array in the image.

AttoChess deletes all of it. The board's border columns are laid out as CR, LF, CR, LF ( 0Dh, 0Ah, 0Dh, 0Ah ) instead of the previous 08h filler. Both CR and LF still have bit 3 set, so every existing border/color mask test fires exactly as before, but now the raw board bytes are already a printable frame. The display loop streams each byte straight to the console with int 29h (DOS fast console output): borders become newlines, empty squares become NULs, and only real pieces take the ASCII transform.

Removed in one move: the render buffer, its pointer setup, the $ terminator, the int 21h / 09h string print, and the reserved board array in the file image.