/*
 * This file contains the hardware definitions for the iis model 70/f
 * at Kitt Peak.
 */

#define	MAXCHAN	    15		/* four refresh memory channels */
				/* 0, 1, 2 and 3 */
#define	NGRAPHICS    7		/* 7-bits graphics */

/* define offsets in the 16-byte, 8-word header */
#define	XFERID       0		/* transfer id */
#define THINGCT      1		/* thing count */
#define SUBUNIT	     2		/* subuint select */
#define CHECKSUM     3		/* check sum */
#define XREG	     4		/* x register */
#define YREG	     5		/* y register */
#define ZREG	     6		/* z register */
#define TREG	     7		/* t register */

#define	IREAD        0100000	/* transfer id definitions */
#define IWRITE             0
#define PACKED	      040000
#define BYPASSIFM     020000
#define BYTE          010000
#define ADDWRITE       04000
#define ACCUM          02000
#define BLOCKXFER      01000
#define VRETRACE        0400
#define MUX32           0200

#define REFRESH            1	/* iis subunit selection */
#define LUT		   2
#define OFM		   3
#define IFM		   4
#define FEEDBACK	   5
#define SCROLL		   6
#define VIDEOM		   7
#define SUMPROC		   8
#define GRAPHICS	   9
#define CURSOR		  10
#define ALU		  11
#define ZOOM		  12
#define COMMAND      0100000

#define ADVXONTC     0100000	/* advance x on thing count */
#define ADVXONYOV     040000	/* advance x on y overflow */
#define ADVYONXOV    0100000	/* advance y on x overflow */
#define ADVYONTC      040000	/* advance y on thing count */

/* iis channel select definitions.  Note that we start the channel
   numbers at 0, not 1, since this is the way the hardware is
   labelled.  iis follows both conventions, randomly!
   Note that the channel numbers are 0, 1, 2, 3, ...
   while the channel selects are 1, 2, 4, 8, ...
   In C it is very simple, to select channel "n" simply output
   "1<<n".  To select channels "m" and "n" output "(1<<n) | (1<<m)". */
#define CHAN0		   1
#define CHAN1		   2
#define CHAN2		   4
#define CHAN3		   8
#define CHAN4		  16
#define CHAN5		  32
#define CHAN6		  64
#define CHAN7		 128
#define CHAN8		 256
#define CHAN9	         512
#define CHAN10		1024
#define CHAN11		2048
#define ALLCHAN        07777
#define GRCHAN       0100000

#define BITPL0		   1	/* iis bit plane selection */
#define BITPL1		   2
#define BITPL2		   4
#define BITPL3		   8
#define BITPL4		  16
#define BITPL5		  32
#define BITPL6		  64
#define BITPL7		 128
#define	ALLBITPL	 255

/*	Button defs. for 70	*/
#define M70_BA (status[0] & 0400)
#define M70_BB (status[0] & 01000)
#define M70_BC (status[0] & 02000)
#define M70_BD (status[0] & 04000)
#define M70_BANY (status[0] & 040000)

/* IMTOOL definitions */
#define SZ_IMCURVAL	 160
#define IMCURSOR	  16	/* IMTOOL cursor subunit */
#define	WCS		  17	/* WCS */
#define IMC_SAMPLE   0040000	/* IMTOOL cursor sample command */


/* Model 75 Changes */

#define M75_FEEDBACK 0100005	/* feedback always in COMMAND mode */
#define M75_ZOOM	   6	/* was 12 for model 70f */

#define M75_ADVXONTC    0400	/* advance x on thing count was 0100000 */
#define M75_ADVXONYOV   0200	/* advance x on y overflow was 040000 */
#define M75_ADVYONXOV  02000	/* advance y on x overflow was 0100000 */
#define M75_ADVYONTC   04000	/* advance y on thing count was 040000 */
#define M75_GRCHAN   0100200

/*	Button defs. for 75	*/
#define M75_BA ((status[0] & 07400) == 02000)
#define M75_BB ((status[0] & 07400) == 02400)
#define M75_BC ((status[0] & 07400) == 03000)
#define M75_BD ((status[0] & 07400) == 03400)
#define M75_BANY (status[0] & 040000)

/*	color definitions		*/

#define GRED	     0076000
#define GGREEN	     0001740
#define GBLUE	     0000037

#define INSERT 	     0100000

/*      trackball link to xreg, yreg   mask */

#define TLINK	     	  06