1997/1101/pc/vgatvp3020.c (diff list | history)

1995/0126/sys/src/9/pc/vgatvp3020.c:5,28 – 1997/1101/sys/src/9/pc/vgatvp3020.c:5,22 (short | long | prev | next)
1994/0624		#include "fns.h" #include "../port/error.h" #include <libg.h>
1997/1101		#define Image IMAGE #include <draw.h> #include <memdraw.h>
1994/0624		#include "screen.h" #include "vga.h"
1994/0810		extern Cursor curcursor;
1994/0624		/* * TVP3020 Viewpoint Video Interface Pallette. * Assumes hooked up to an S3 86C928. */ enum { AddrW = 0x00, /* Palette address register - write mode */ Palette = 0x01, /* Color palette holding register */ Pmask = 0x02, /* Pixel read mask */ AddrR = 0x03, /* Palette address register - read mode */                  Index = 0x06, /* Index register */ Data = 0x07, /* Data register */
1997/1101		Index = 0x06, /* Index register */ Data = 0x07, /* Data register */
1994/0624		}; /*
1995/0126/sys/src/9/pc/vgatvp3020.c:56,80 – 1997/1101/sys/src/9/pc/vgatvp3020.c:50,79
1994/0624		} static void load(Cursor *c)
1997/1101		tvp3020disable(VGAscr*)
1994/0624		{ uchar p, p0, p1; int x, y;
1997/1101		uchar r;
1994/0624
1994/0810		/* * Lock the DAC registers so we can update the * cursor bitmap if necessary. * If it's the same as the last cursor we loaded, * just make sure it's enabled.
1997/1101		* Disable * cursor; * cursor control enable for Bt485 DAC (!); * the hardware cursor external operation mode.
1994/0810		*/
1994/0729		lock(&palettelock);
1994/0810		if(memcmp(c, &curcursor, sizeof(Cursor)) == 0){ tvp3020xo(0x06, 0x40|0x10); /* Cursor Control Register */ unlock(&palettelock); return; } memmove(&curcursor, c, sizeof(Cursor));
1997/1101		tvp3020xo(0x06, 0x10); /* Cursor Control Register */
1994/0624
1997/1101		r = vgaxi(Crtx, 0x45) & ~0x20; vgaxo(Crtx, 0x45, r); r = vgaxi(Crtx, 0x55) & ~0x20; vgaxo(Crtx, 0x55, r); } static void tvp3020enable(VGAscr*) { uchar r;
1994/0624		/* * Make sure cursor is off by initialising the cursor * control to defaults + X-Windows cursor mode.
1995/0126/sys/src/9/pc/vgatvp3020.c:82,87 – 1997/1101/sys/src/9/pc/vgatvp3020.c:81,119
1994/0624		tvp3020xo(0x06, 0x10); /* Cursor Control Register */ /*
1997/1101		* Overscan colour, * cursor colour 1 (white), * cursor colour 2 (black). */ tvp3020xo(0x20, Pwhite); tvp3020xo(0x21, Pwhite); tvp3020xo(0x22, Pwhite); tvp3020xo(0x23, Pwhite); tvp3020xo(0x24, Pwhite); tvp3020xo(0x25, Pwhite); tvp3020xo(0x26, Pblack); tvp3020xo(0x27, Pblack); tvp3020xo(0x28, Pblack); /* * Finally, enable * the hardware cursor external operation mode; * cursor control enable for Bt485 DAC (!). */ r = vgaxi(Crtx, 0x55)|0x20; vgaxo(Crtx, 0x55, r); r = vgaxi(Crtx, 0x45)|0x20; vgaxo(Crtx, 0x45, r); } static void tvp3020load(VGAscr*, Cursor* curs) { uchar p, p0, p1; int x, y; /* * Make sure cursor is off by initialising the cursor * control to defaults + X-Windows cursor mode. */ tvp3020xo(0x06, 0x10); /* Cursor Control Register */ /*
1994/0624		* Initialise the cursor RAM LS and MS address * (LS must be first). */
1995/0126/sys/src/9/pc/vgatvp3020.c:104,111 – 1997/1101/sys/src/9/pc/vgatvp3020.c:136,143
1994/0624		for(y = 0; y < 64; y++){ for(x = 0; x < 64/8; x++){ if(x < 16/8 && y < 16){ p0 = c->clr[x+y*2]; p1 = c->set[x+y*2];
1997/1101		p0 = curs->clr[x+y*2]; p1 = curs->set[x+y*2];
1994/0624		p = 0x00; if(p1 & 0x10)
1995/0126/sys/src/9/pc/vgatvp3020.c:153,254 – 1997/1101/sys/src/9/pc/vgatvp3020.c:185,215
1994/0624		} /* * Initialise the cursor hot-point
1997/1101		* Initialise the cursor hotpoint
1994/0624		* and enable the cursor. */ tvp3020xo(0x04, -c->offset.x); /* Sprite Origin X */ tvp3020xo(0x05, -c->offset.y); /* Sprite Origin Y */
1997/1101		tvp3020xo(0x04, -curs->offset.x); /* Sprite Origin X */ tvp3020xo(0x05, -curs->offset.y); /* Sprite Origin Y */
1994/0624		tvp3020xo(0x06, 0x40|0x10); /* Cursor Control Register */
1994/0729		unlock(&palettelock);
1994/0624		} static void enable(void) { uchar r;
1994/0729		lock(&palettelock);
1994/0624		/* * Make sure cursor is off by initialising the cursor * control to defaults + X-Windows cursor mode. */ tvp3020xo(0x06, 0x10); /* Cursor Control Register */                  /* * Overscan colour, * cursor colour 1 (white), * cursor colour 2 (black). */
1995/0126		tvp3020xo(0x20, Pwhite); tvp3020xo(0x21, Pwhite); tvp3020xo(0x22, Pwhite); tvp3020xo(0x23, Pwhite); tvp3020xo(0x24, Pwhite); tvp3020xo(0x25, Pwhite); tvp3020xo(0x26, Pblack); tvp3020xo(0x27, Pblack); tvp3020xo(0x28, Pblack);
1994/0624
1994/0729		unlock(&palettelock);
1994/0624		/* * Finally, enable * the hardware cursor external operation mode; * cursor control enable for Bt485 DAC (!). */ r = vgaxi(Crtx, 0x55)|0x20; vgaxo(Crtx, 0x55, r);                  r = vgaxi(Crtx, 0x45)|0x20; vgaxo(Crtx, 0x45, r); }                  static int move(Point p)
1997/1101		tvp3020move(VGAscr*, Point p)
1994/0624		{
1994/0729		if(canlock(&palettelock) == 0)
1994/0624		return 1;                  tvp3020xo(0x00, p.x & 0xFF); /* Cursor Position X LSB */ tvp3020xo(0x01, (p.x>>8) & 0x0F); /* Cursor Position X MSB */ tvp3020xo(0x02, p.y & 0xFF); /* Cursor Position Y LSB */ tvp3020xo(0x03, (p.y>>8) & 0x0F); /* Cursor Position Y MSB */
1994/0729		unlock(&palettelock);
1994/0624		return 0; } static void disable(void) { uchar r;                  /* * Disable * cursor; * cursor control enable for Bt485 DAC (!); * the hardware cursor external operation mode. */
1994/0729		lock(&palettelock);
1994/0624		tvp3020xo(0x06, 0x10); /* Cursor Control Register */
1994/0729		unlock(&palettelock);
1994/0624		r = vgaxi(Crtx, 0x45) & ~0x20; vgaxo(Crtx, 0x45, r);                  r = vgaxi(Crtx, 0x55) & ~0x20; vgaxo(Crtx, 0x55, r); }                  Hwgc tvp3020hwgc = {
1997/1101		VGAcur vgatvp3020cur = {
1994/0624		"tvp3020hwgc", enable, load, move, disable,
1995/0126		0,
1997/1101		tvp3020enable, tvp3020disable, tvp3020load, tvp3020move,
1994/0624		};
1995/0126		void vgatvp3020link(void) { addhwgclink(&tvp3020hwgc); }