Basic input/output system BIOS---display output

The display adapter card is connected with the system, the display adapter card is the interface card showing the output, the camera is CGA and EGA, the current display adapter card is VGA and TVGA, they support two display methods, text display and graphic display

The display I/O program provided in the BIOS is present as the 10H interrupt handler

The main functions of the display I/O program are 0 to 13 functions, should be set in accordance with the table set the entry parameters, the function number is placed in Ah, after the interrupt instruction int 10H, after the call returned, from the relevant register to remove the export parameters

For specific AH register functions, refer to this article: http://www.cnblogs.com/magic-cube/archive/2011/10/19/2217676.html

Other interrupts, such as print interrupts, call the int17h function, and after the call returns, remove the exit parameters from the relevant registers

Specific interrupt function can be reference on 189 pages