1997/1101/pc/vgaark2000pv.c (diff list | history)

1997/0327/sys/src/9/pc/vgaark2000pv.c:5,48 – 1997/1101/sys/src/9/pc/vgaark2000pv.c:5,50 (short | long | prev | next)
1995/0512		#include "fns.h" #include "../port/error.h" #include <libg.h>
1997/1101		#define Image IMAGE #include <draw.h> #include <memdraw.h>
1995/0512		#include "screen.h" #include "vga.h"
1995/0516		extern Bitmap gscreen; extern Cursor curcursor;
1997/1101		static int ark2000pvpageset(VGAscr*, int page) { uchar seq15;
1995/0516		static Lock ark2000pvlock; static ulong storage; static Point hotpoint;
1997/1101		seq15 = vgaxi(Seqx, 0x15); vgaxo(Seqx, 0x15, page); vgaxo(Seqx, 0x16, page);
1995/0516
1997/1101		return seq15; }
1995/0512		static void
1995/0516		setark2000pvpage(int page)
1997/1101		ark2000pvpage(VGAscr* scr, int page)
1995/0512		{ vgaxo(Seqx, 0x15, page); vgaxo(Seqx, 0x16, page);
1997/1101		lock(&scr->devlock); ark2000pvpageset(scr, page); unlock(&scr->devlock);
1995/0512		}
1995/0516		static void disable(void)
1997/1101		ark2000pvdisable(VGAscr*)
1995/0516		{ uchar seq20;
1997/0327		lock(&ark2000pvlock);
1995/0516		seq20 = vgaxi(Seqx, 0x20) & ~0x08; vgaxo(Seqx, 0x20, seq20);
1997/0327		unlock(&ark2000pvlock);
1995/0516		} static void enable(void)
1997/1101		ark2000pvenable(VGAscr* scr)
1995/0516		{ uchar seq20;
1997/1101		ulong storage;
1995/0516
1997/0327		lock(&ark2000pvlock);
1995/0516		/* * Disable the cursor then configure for X-Windows style,
1996/0216		* 32x32 and 4/8-bit colour depth.
1997/0327/sys/src/9/pc/vgaark2000pv.c:66,71 – 1997/1101/sys/src/9/pc/vgaark2000pv.c:68,74
1995/0516		storage = (vgaxi(Seqx, 0x10)>>6) & 0x03; storage = (1024*1024)<<storage;
1996/0216		storage -= 256;
1997/1101		scr->storage = storage;
1996/0216		vgaxo(Seqx, 0x25, 0x3F);
1995/0516		/*
1997/0327/sys/src/9/pc/vgaark2000pv.c:72,111 – 1997/1101/sys/src/9/pc/vgaark2000pv.c:75,101
1995/0516		* Enable the cursor. */ vgaxo(Seqx, 0x20, seq20);
1997/0327		unlock(&ark2000pvlock);
1995/0516		} static void load(Cursor *c)
1997/1101		ark2000pvload(VGAscr* scr, Cursor* curs)
1995/0516		{
1996/0216		uchar *p;
1995/0516		int x, y;
1997/1101		uchar *p, seq10; int opage, x, y;
1995/0516		/* * Lock the display memory 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. */ lock(&ark2000pvlock); if(memcmp(c, &curcursor, sizeof(Cursor)) == 0){
1996/0216		vgaxo(Seqx, 0x20, vgaxi(Seqx, 0x20)|0x08);
1995/0516		unlock(&ark2000pvlock); return; } memmove(&curcursor, c, sizeof(Cursor));                  /* * Is linear addressing turned on? This will determine * how we access the cursor storage. */ if(vgaxi(Seqx, 0x10) & 0x10) p = ((uchar*)gscreen.base) + storage; else { setark2000pvpage(storage>>16); p = ((uchar*)gscreen.base) + (storage & 0xFFFF);
1997/1101		seq10 = vgaxi(Seqx, 0x10); opage = 0; p = KADDR(scr->aperture); if(!(seq10 & 0x10)){ opage = ark2000pvpageset(scr, scr->storage>>16); p += (scr->storage & 0xFFFF);
1995/0516		}
1997/1101		else p += scr->storage;
1995/0516		/* * The cursor is set in X11 mode which gives the following
1997/0327/sys/src/9/pc/vgaark2000pv.c:122,129 – 1997/1101/sys/src/9/pc/vgaark2000pv.c:112,119
1996/0216		for(y = 0; y < 32; y++){ for(x = 0; x < 32/8; x++){
1995/0516		if(x < 16/8 && y < 16){ *p++ = c->clr[2*y + x]|c->set[2*y + x]; *p++ = c->set[2*y + x];
1997/1101		*p++ = curs->clr[2*y + x]|curs->set[2*y + x]; *p++ = curs->set[2*y + x];
1995/0516		} else {
1995/0808		*p++ = 0x00;
1997/0327/sys/src/9/pc/vgaark2000pv.c:132,165 – 1997/1101/sys/src/9/pc/vgaark2000pv.c:122,155
1995/0516		} }
1997/1101		if(!(seq10 & 0x10)){ ark2000pvpageset(scr, opage); unlock(&scr->devlock); }
1995/0516		/* * Set the cursor hotpoint and enable the cursor.
1997/1101		* Save the cursor hotpoint.
1995/0516		*/ hotpoint = c->offset;                  unlock(&ark2000pvlock);
1997/1101		scr->offset = curs->offset;
1995/0516		} static int move(Point p)
1997/1101		ark2000pvmove(VGAscr* scr, Point p)
1995/0516		{ int x, xo, y, yo; if(canlock(&ark2000pvlock) == 0) return 1;                  /* * Mustn't position the cursor offscreen even partially, * or it might disappear. Therefore, if x or y is -ve, adjust the * cursor origins instead. */ if((x = p.x+hotpoint.x) < 0){
1997/1101		if((x = p.x+scr->offset.x) < 0){
1995/0516		xo = -x;
1995/0822		x = 0;
1995/0516		} else
1995/0822		xo = 0;
1995/0516		if((y = p.y+hotpoint.y) < 0){
1997/1101		if((y = p.y+scr->offset.y) < 0){
1995/0516		yo = -y;
1995/0822		y = 0;
1995/0516		}
1997/0327/sys/src/9/pc/vgaark2000pv.c:176,213 – 1997/1101/sys/src/9/pc/vgaark2000pv.c:166,188
1995/0516		vgaxo(Seqx, 0x23, (y>>8) & 0x0F); vgaxo(Seqx, 0x24, y & 0xFF); unlock(&ark2000pvlock); return 0; }
1996/0215		static Hwgc ark2000pvhwgc = {
1995/0516		"ark2000pvhwgc", enable, load, move, disable,
1997/1101		VGAdev vgaark2000pvdev = { "ark2000pv",
1995/0516		0, };                  static void ark2000pvpage(int page) {
1997/0327		lock(&ark2000pvlock); setark2000pvpage(page); unlock(&ark2000pvlock);
1995/0516		}
1995/0512		static Vgac ark2000pv = { "ark2000pv",
1997/1101		0,
1995/0512		ark2000pvpage,                  0, }; void vgaark2000pvlink(void) { addvgaclink(&ark2000pv);
1995/0516		addhwgclink(&ark2000pvhwgc);
1995/0512		}
1997/1101		VGAcur vgaark2000pvcur = { "ark2000pvhwgc", ark2000pvenable, ark2000pvdisable, ark2000pvload, ark2000pvmove, };