AH = 0Fh: Get Video State and Mode

This function returns the current state of the display, including the current mode, number of characters per line, and current display page. Refer to the Set Mode function (AH = 00h) on page 3-64 for a description of the modes.

• Input: AH = 0Fh
  

• Output: AH = Number of characters per line
  AL = Current Display Mode (0-7,20h)
  BH = Active Display page
  

• Error conditions: None
• Registers modified: AX