🚀 go-pugleaf

wcw@wolfenet.com (William White) wrote:

>	I'm programming in text mode, and would like to know how to write characters 
>to the screen without moving the cursor.  Just backing up the cursor one 
>column after a character is written is not good enough.
>	Here is what I need this for:
>	
>	I'm trying to write a program that does all screen I/O without the screen 
>borders scrolling.  I need to be able to write in column 80 on line 25 
>without the cursor going to the next line, thus making line 1 disappear off 
>the screen.

>	I would be eternally gratefull for any help anyone could give me.

>	---Will
>+----------------------------------------------------------------------+
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>|    Quality Assurance Lab Technician ®¯ Computer Analyst/Programmer   | 
>|             ** We make it, you drink it, you love it **              |
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Here is how to do it in Turbo-C; if you are using anoter compiler,
must be an equivalent.

Output the last char in the line throught BIOS INT 10H function 10
using the Turbo-C function int86:

#include <dos.h>
#define VIDEO 0x10     /* BIOS interrupt number = Video */
union REGS cpu_reg;
cpu_reg.h.ah = 10;       /* function = Write Character at Cursor */
cpu_reg.h.bh = 0;         /* video page number, usually zero */
cpu_reg.x.cx = 1;         /* num of SAME char. to output, usually 1 */
cpu_reg.h.al = 'X';        /* char. to output */
int86(VIDEO,&cpu_reg,&cpu_reg);