Added Cortex-I Frame Grabber by Paul S. LaFollette, Jr.

Submitted by:	Paul S. LaFollette, Jr.

1 files changed, 59 insertions, 0 deletions

diff --git a/sys/i386/isa/ctxreg.h b/sys/i386/isa/ctxreg.h
new file mode 100644
index 0000000..28b644a
--- /dev/null
+++ b/sys/i386/isa/ctxreg.h
@@ -0,0 +1,59 @@
+/*
+ *
+ *	Copyright (C) 1994, Paul S. LaFollette, Jr. This software may be used, 
+ *	modified, copied, distributed, and sold, in both source and binary form 
+ *	provided that the above copyright and these terms are retained. Under 
+ *	no circumstances is the author responsible for the proper functioning
+ *	of this software, nor does the author assume any responsibility
+ *	for damages incurred with its use
+ *
+ *	$Id$
+ */
+
+/*
+ *	Register and bit definitions for CORTEX-I frame grabber
+ */
+
+#ifndef _I386_ISA_CTXREG_H_
+#define _I386_ISA_CTXREG_H_
+
+	/*  Control Ports (all are write-only) */
+
+#define ctx_cp0 0		/*	offset to control port 0   */
+#define ctx_cp1 1		/*	offset to control port 1   */
+#define ctx_lutaddr 2		/*	offset to lut address port */
+#define ctx_lutdata 3		/*	offset to lut data port	   */
+
+	/*  Status port (read-only but same address as control port 0)  */
+
+#define ctx_status 0		/*	offset to status port 	   */
+
+	/*  Bit assignments for control port 0 */
+
+#define PAGE_SELECT0 1		/* These two bits choose which 1/4 of the   */
+#define PAGE_SELECT1 2		/* video memory is accessible to us.        */
+#define PAGE_ROTATE 4		/* 0 => horizontal access. 1 => vertical    */
+#define ACQUIRE 8		/* set to start frame grab		    */
+#define SEE_STORED_VIDEO 16	/* set to allow stored frame to be seen     */
+#define LOW_RESOLUTION 32	/* set to enable 256 x 256 mode		    */
+
+	/*  Bit assignments for control port 1 */
+
+#define INTERRUPT_ENABLE 1	/* Allow interrupts (we avoid this bit)     */
+#define TRIGGER_ENABLE 2	/* Enable external trigger for frame grab   */
+#define LUT_LOAD_ENABLE 4	/* Allow loading of lookup table	    */
+#define BLANK_DISPLAY 8		/* Turn off display 		            */
+#define AB_SELECT 16		/* Along with HW switch, choose base memory */
+#define RAM_ENABLE 32		/* Connect video RAM to computer bus	    */
+
+	/*  Bit assignments for status port */
+
+#define INTERRUPT_STATUS 1	/* Ignored by us			    */
+#define ADC_OVERFLOW 2		/* Set if any pixes from camera "too bright"*/
+#define FIELD 4			/* 0 or 1 shows which interlace field are in*/
+#define VERTICAL_BLANK 8	/* 1 if in vertical blanking interval       */
+#define TRIGGERED 16		/* 1 if HW trigger contacts closed	    */
+#define ACQUIRING_ACK 32        /* 1 if currently grabbing a frame          */
+
+
+#endif /* ifndef  _I386_ISA_CTXREG_H_ */