tailieunhanh - Cracker Handbook 1.0 part 63

Tham khảo tài liệu 'cracker handbook part 63', công nghệ thông tin, kỹ thuật lập trình phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Call registers AH 02H BH Video page where the cursor is positioned. DH row DL Column Return Registers None. The cursor position is defined by its coordinates starting from the position 0 0 to position 79 24. This means from the left per computer screen corner to right lower computer screen. Therefore the numeric values that the DH and DL registers get in text model are from 0 to 24 for rows and from 0 to 79 for columns. 09h Function Use Shows a defined character several times on the computer screen with a defined attribute starting with the actual cursor position. Call registers AH 09H AL Character to display BH Video page where the character will display it BL Attribute to use number of repetition. Return registers None This function displays a character on the computer screen several times using a specified number in the CX register but without changing the cursor position on the computer screen. 0Ah Function Use Displays a character in the actual cursor position. Call registers AH 0AH AL Character to display BH Video page where the character will display it BL Color to use graphic mode only . CX number of repetitions Return registers None. The main difference between this function and the last one is that this one doesn t allow modifications on the attributes neither does it change the cursor position. 0EH Function Use Displays a character on the computer screen dates the cursor position. Call registers AH 0EH AL Character to display BH Video page where the character will display it BL Color to use graphic mode only . Return registers None 16H interruption We will see two functions of the 16 h interruption these functions are called by using the AH register. Functions of the 16h interruption 00H Function reads a character from the keyboard. 01H Function reads the keyboard state. 00H Function Use Reads a character from the keyboard. Call registers