#ifdef	ournix
#include "ournix.h"
#endif
char *sccsID = 
	"@(#) cursor.c, V1.1 Copyright Julian H. Stacey, Munich, 26 Dec 88\n" ;

/* Reference: Advanced MSDOS by Ray Duncan, Microsoft Press,
Page 400. Int 10H Function 1, IBM PC BIOS video driver services
Set Cursor Type */

/*	cursor 0 7	sets a full block cursor
	cursor		sets cursor back to default (rows 6 & 7 on)
	cursor 6 7	also sets cursor back to default (rows 6 & 7 on)
	cursor n n 1	sets first undocumented bit on
	cursor n n n 1	sets second undocumented bit on (cursor invisible)

For hard to see LCD screens without back-lighting, 
use a full block cursor.
	*/

#define	FIRST_LINE	1	
#define	LAST_LINE	7

char	**ARGV ;

#include <dos.h>
main(argc,argv)
	int argc ;
	char **argv ;
	{
	union	REGS	in ;
	ARGV = argv ;
#ifdef	VSL	/* { */
#include	"../../include/vsl.h"
#endif		/* } */
	in.h.ah = 1 ;		/* Function No. 1 */

	in.h.ch = 6 ;		/* Set cursor top row to default setting */
	in.h.cl = 7 ;		/* Set cursor bottom row to default setting */
	if (--argc == 0) goto set_cursor ;

	in.h.ch = **++argv - '0' ;
	if (--argc == 0) goto set_cursor ;

	in.h.cl = **++argv - '0' ;
	if (--argc == 0) goto set_cursor ;

	/* using undocumented bit: narrow the width of cursor
				increase height of cursor from 2 to 3 */
	if (**++argv == '1' ) in.h.ch |= 64 ;
	/* unfortunately we dont seem to be able to reduce width
		to original setting */
	if (--argc == 0) goto set_cursor ;

	if (**++argv == '0' ) in.h.ch |= 32 ; /* turning cursor off */
	/* turning cursor off doesnt seem to work anymore - but not important */

#define	OUT	in	/* save data space, we dont actually need a seperate
				output register set */
set_cursor:
	int86(0x10, &in, &OUT) ;
	}