Function  09h	 Write Character and Attribute - at current cursor position

entry   AH      09h 

	AL      ASCII code of character to display 

	BH      display page number - text mode 

	BL      attribute/color of character 

	CX      number of characters to write 

return	none


note 1) CX should not exceed actual rows availible, or results may be erratic 

     2) Setting CX to zero will cause runaway 

     3) All values of AL result in some sort of display; the various control 

	characters are not recognized as special and do not change the current 

	cursor position 

     4) Does not change cursor position when called - the cursor must be 

	advanced with int 10 function 0Ah. 

     5) If used to write characters in graphics mode with bit 7 of AH set to 1 

	the character will by XORed with the current display contents. 

     6) In graphics mode the bit patterns for ASCII character codes 80h-0FFh 

	are obtained from a table. On the standard PC and AT, the location is at 

	interrupt vector 01Fh (0000:007C). For ASCII characters 00h-07Fh, the 

	table is at an address in ROM. On the PCjr the table is at interrupt 

	vector 44h (0000:00110) and is in addressable RAM (may be replaced by 

	the user) 

     7) All characters are displayed, including CR, LF, and BS

Function  09h	 Write Character and Attribute - at current cursor position

Sample Code:


\Asm\Lib\BIOS.INC -@BIOSVidChrAtrOut	  MACRO char,atrib,page,repeat