1995/0126/pc/vgabt485.c (diff list | history)

1995/0126/sys/src/9/pc/vgabt485.c:5,13 – 1997/1101/sys/src/9/pc/vgabt485.c:5,14 (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" /* * Hardware graphics cursor support for
1995/0126/sys/src/9/pc/vgabt485.c:103,120 – 1997/1101/sys/src/9/pc/vgabt485.c:104,176
1994/0624		vgaxo(Crtx, 0x55, crt55); } static Point hotpoint;
1997/1101		static void bt485disable(VGAscr*) { uchar r;
1994/0624
1997/1101		/* * Disable * cursor mode 3; * cursor control enable for Bt485 DAC; * the hardware cursor external operation mode. */ r = bt485i(Cmd2) & ~0x03; bt485o(Cmd2, r); r = vgaxi(Crtx, 0x45) & ~0x20; vgaxo(Crtx, 0x45, r); r = vgaxi(Crtx, 0x55) & ~0x20; vgaxo(Crtx, 0x55, r); }
1994/0624		static void load(Cursor *c)
1997/1101		bt485enable(VGAscr*)
1994/0624		{ uchar r; int x, y;
1997/1101		/* * Turn cursor off. */ r = bt485i(Cmd2) & 0xFC; bt485o(Cmd2, r);
1994/0624
1994/0729		lock(&palettelock);
1997/1101		/* * Overscan colour, * cursor colour 1 (white), * cursor colour 2, 3 (black). */ bt485o(ColorW, 0x00); bt485o(Color, Pwhite); bt485o(Color, Pwhite); bt485o(Color, Pwhite);
1994/0624
1997/1101		bt485o(Color, Pwhite); bt485o(Color, Pwhite); bt485o(Color, Pwhite); bt485o(Color, Pblack); bt485o(Color, Pblack); bt485o(Color, Pblack); bt485o(Color, Pblack); bt485o(Color, Pblack); bt485o(Color, Pblack);
1994/0624		/*
1997/1101		* Finally, enable * the hardware cursor external operation mode; * cursor control enable for Bt485 DAC. * The #9GXE cards seem to need the 86C928 Bt485 support * enabled in order to work at all in enhanced mode. */ r = vgaxi(Crtx, 0x55)|0x20; vgaxo(Crtx, 0x55, r); r = vgaxi(Crtx, 0x45)|0x20; vgaxo(Crtx, 0x45, r); } static void bt485load(VGAscr* scr, Cursor* curs) { uchar r; int x, y; /*
1994/0624		* Turn cursor off; * put cursor into 64x64x2 mode and clear MSBs of address; * clear LSBs of address;
1995/0126/sys/src/9/pc/vgabt485.c:137,143 – 1997/1101/sys/src/9/pc/vgabt485.c:193,199
1994/0624		for(y = 0; y < 64; y++){ for(x = 0; x < 64/8; x++){ if(x < 16/8 && y < 16) bt485o(Cram, c->clr[x+y*2]);
1997/1101		bt485o(Cram, curs->clr[x+y*2]);
1994/0624		else bt485o(Cram, 0x00); }
1995/0126/sys/src/9/pc/vgabt485.c:145,151 – 1997/1101/sys/src/9/pc/vgabt485.c:201,207
1994/0624		for(y = 0; y < 64; y++){ for(x = 0; x < 64/8; x++){ if(x < 16/8 && y < 16) bt485o(Cram, c->set[x+y*2]);
1997/1101		bt485o(Cram, curs->set[x+y*2]);
1994/0624		else bt485o(Cram, 0x00); }
1995/0126/sys/src/9/pc/vgabt485.c:155,267 – 1997/1101/sys/src/9/pc/vgabt485.c:211,244
1994/0624		* Initialise the cursor hot-point * and enable the cursor. */ hotpoint.x = 64+c->offset.x; hotpoint.y = 64+c->offset.y;
1997/1101		scr->offset.x = 64+curs->offset.x; scr->offset.y = 64+curs->offset.y;
1994/0624		r = (bt485i(Cmd2) & 0xFC)|0x01; bt485o(Cmd2, r);
1994/0729		unlock(&palettelock);
1994/0624		} static void enable(void) { uchar r;
1994/0729		lock(&palettelock);
1994/0624		/* * Turn cursor off. */ r = bt485i(Cmd2) & 0xFC; bt485o(Cmd2, r);                  /* * Overscan colour, * cursor colour 1 (white), * cursor colour 2, 3 (black). */ bt485o(ColorW, 0x00);
1995/0126		bt485o(Color, Pwhite); bt485o(Color, Pwhite); bt485o(Color, Pwhite);
1994/0624
1995/0126		bt485o(Color, Pwhite); bt485o(Color, Pwhite); bt485o(Color, Pwhite);
1994/0624
1995/0126		bt485o(Color, Pblack); bt485o(Color, Pblack); bt485o(Color, Pblack); bt485o(Color, Pblack); bt485o(Color, Pblack); bt485o(Color, Pblack);
1994/0624
1994/0729		unlock(&palettelock);
1994/0624		/* * Finally, enable * the hardware cursor external operation mode; * cursor control enable for Bt485 DAC. * The #9GXE cards seem to need the 86C928 Bt485 support * enabled in order to work at all in enhanced mode. */                  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		bt485move(VGAscr* scr, Point p)
1994/0624		{ int x, y;
1994/0729		if(canlock(&palettelock) == 0)
1994/0624		return 1;
1997/1101		x = p.x+scr->offset.x; y = p.y+scr->offset.y;
1994/0624		x = p.x+hotpoint.x; y = p.y+hotpoint.y;                  bt485o(Cxlr, x & 0xFF); bt485o(Cxhr, (x>>8) & 0x0F); bt485o(Cylr, y & 0xFF); bt485o(Cyhr, (y>>8) & 0x0F);
1994/0729		unlock(&palettelock);
1994/0624		return 0; } static void disable(void) { uchar r;                  /* * Disable * cursor mode 3; * cursor control enable for Bt485 DAC; * the hardware cursor external operation mode. */
1994/0729		lock(&palettelock);
1994/0624		r = bt485i(Cmd2) & ~0x03; bt485o(Cmd2, r);
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 bt485hwgc = {
1997/1101		VGAcur vgabt485cur = {
1994/0624		"bt485hwgc", enable, load, move, disable,
1995/0126		0,
1997/1101		bt485enable, bt485disable, bt485load, bt485move,
1994/0624		};
1995/0126		void vgabt485link(void) { addhwgclink(&bt485hwgc); }