1992/1111/pc/vga.c (diff list | history)

1992/1111/sys/src/9/pc/vga.c:12,20 – 1992/1112/sys/src/9/pc/vga.c:12,17 (short | long | prev | next)
1991/0730		#define MINX 8
1992/0208		extern GSubfont defont0; GSubfont *defont;
1991/0730		struct{ Point pos; int bwid;
1992/1111/sys/src/9/pc/vga.c:22,31 – 1992/1112/sys/src/9/pc/vga.c:19,30
1991/0730
1992/1106		int islittle = 1; /* little endian bit ordering in bytes */ extern Cursor arrow; extern uchar cswizzle[256];
1992/1112		extern GSubfont defont0; GSubfont *defont; extern Cursor arrow; extern GBitmap cursorback; static Lock colorlock; /* color map lock */
1992/1106
1991/0730		/* * screen dimensions */
1992/1111/sys/src/9/pc/vga.c:67,73 – 1992/1112/sys/src/9/pc/vga.c:66,72
1992/0414		0xff, /* attribute */
1992/0418		0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
1992/0423		0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x3f,
1992/1112		0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
1992/1015		0x01, 0x10, 0x0f, 0x00, 0x00,
1992/0414		};
1992/0418
1992/1111/sys/src/9/pc/vga.c:238,244 – 1992/1112/sys/src/9/pc/vga.c:237,242
1992/1106		/*
1992/1109		* zero hard screen and setup a bitmap for the new size
1992/1106		*/ memset((void*)SCREENMEM, 0xff, 64*1024);
1992/1109		if(ldepth == 3) vgascreen.ldepth = 3; else
1992/1111/sys/src/9/pc/vga.c:245,252 – 1992/1112/sys/src/9/pc/vga.c:243,251
1992/1109		vgascreen.ldepth = 0;
1992/1106		vgascreen.base = (void*)SCREENMEM;
1992/1110		vgascreen.width = (maxx*(1<<vgascreen.ldepth))/32;
1992/1112		vgascreen.r.min = Pt(0, 0);
1992/1106		vgascreen.r.max = Pt(maxx, maxy); vgascreen.clipr.max = vgascreen.r.max;
1992/1112		vgascreen.clipr = vgascreen.r;
1992/1106		/*
1992/1109		* setup new soft screen, free memory for old screen
1992/1111/sys/src/9/pc/vga.c:253,276 – 1992/1112/sys/src/9/pc/vga.c:252,280
1992/1106		*/ gscreen.ldepth = ldepth; gscreen.width = (maxx*(1<<ldepth))/32;
1992/1112		gscreen.r.min = Pt(0, 0);
1992/0603		gscreen.r.max = Pt(maxx, maxy);
1992/0604		gscreen.clipr.max = gscreen.r.max;
1992/1112		gscreen.clipr = gscreen.r;
1992/1110		len = gscreen.width * BY2WD * maxy;
1992/1109		if(gscreen.base){ free(gscreen.base);
1992/1111		p = smalloc(len+2*1024)); gscreen.base = ((ulong*)p) + 256; } else { p = malloc(len+2*1024)); gscreen.base = ((ulong*)p) + 256; }
1992/1112		p = smalloc(len + 2*1024); } else p = malloc(len + 2*1024);
1992/1111		pad1 = p; pad2 = p + len + 1024;
1992/1112		pad2 = p + 1024 + len;
1992/1111		memset(pad1, 0, 1024); memset(pad2, 0, 1024);
1992/1112		gscreen.base = (ulong*)(p+1024);
1992/1107		memset((char*)gscreen.base, 0xff, len);
1992/1112		memset((void*)SCREENMEM, 0xff, vgascreen.width * BY2WD * maxy);
1992/1106		/*
1992/1112		* set depth of cursor backup area */ bitdepth(); /*
1992/1106		* set string pointer to upper left */
1992/0603		out.pos.x = MINX;
1992/1111/sys/src/9/pc/vga.c:278,290 – 1992/1112/sys/src/9/pc/vga.c:282,287
1992/0603		out.bwid = defont0.info[' '].width; }
1992/1111		int colourxpnd(int x) { x &= 3; return (x<<4)|(x<<2)|x; }
1992/0603		void
1991/0730		screeninit(void)
1991/0723		{
1992/1111/sys/src/9/pc/vga.c:322,341 – 1992/1112/sys/src/9/pc/vga.c:319,333
1992/1110		/*
1992/1111		* set up color map
1992/1110		*/
1992/1112		lock(&colorlock);
1992/1110		outb(CMWX, 0); for(i = 0; i < 16; i++){
1992/1111		outb(CM, colourxpnd(i<<1)); outb(CM, colourxpnd(i>>2)); outb(CM, colourxpnd(i&~1));
1992/1112		x = (i*63)/15; outb(CM, x); outb(CM, x); outb(CM, x);
1992/1110		}
1992/1111		outb(CMWX, 5); outb(CM, 21); outb(CM, 21); outb(CM, 21); outb(CMWX, 0xa); outb(CM, 42); outb(CM, 42); outb(CM, 42);
1992/1112		unlock(&colorlock);
1991/0723		}
1991/0727
1992/1106		/*
1992/1111/sys/src/9/pc/vga.c:383,392 – 1992/1112/sys/src/9/pc/vga.c:375,393
1992/1108		uchar *sp, *hp;
1992/1111		int y, len, incs, inch, off, page, y2pg, ey;
1992/1108		Rectangle r;
1992/1112		static int nocheck;
1992/1108		r = mbb; mbb = NULLMBB;
1992/1112		if(nocheck==0 && memcmp(pad1, pad2, 1024)){ nocheck = 1; print("b: %d %d %d %d\n", r.min.x, r.min.y, r.max.x, r.max.y); nocheck = 0; memset(pad1, 0, 1024); memset(pad2, 0, 1024); }
1992/1108		if(Dy(r) < 0) return;
1992/1111/sys/src/9/pc/vga.c:424,431 – 1992/1112/sys/src/9/pc/vga.c:425,432
1992/1111		hp = (uchar*)(vgascreen.base+(r.min.y*vgascreen.width)) + off; sp = (uchar*)(gscreen.base+(r.min.y*gscreen.width)) + 2*off; len = (r.max.x + 15)/8 - r.min.x/8; if(len < 2) len = 2;
1992/1112		if(len < 0) return;
1992/1111		/* reverse the bits and split into 2 bit planes */
1992/1108		for (y = r.min.y; y < r.max.y; y++){
1992/1111/sys/src/9/pc/vga.c:474,479 – 1992/1112/sys/src/9/pc/vga.c:475,488
1992/1111		} break;
1992/1108		}
1992/1112		if(nocheck==0 && memcmp(pad1, pad2, 1024)){ nocheck = 1; print("a: %d %d %d %d\n", r.min.x, r.min.y, r.max.x, r.max.y); nocheck = 0; memset(pad1, 0, 1024); memset(pad2, 0, 1024); }
1992/1108		} void
1992/1111/sys/src/9/pc/vga.c:548,574 – 1992/1112/sys/src/9/pc/vga.c:557,591
1992/1106		screenupdate(); }
1992/1112		static ulong expand(uchar x) { return (x<<(32-6))|(x<<(32-12))|(x<<(32-18))|(x<<(32-24)); }
1992/1106		void
1991/0730		getcolor(ulong p, ulong *pr, ulong *pg, ulong *pb) { ulong ans;                  /*
1991/0731		* The safari monochrome says 0 is black (zero intensity)
1991/0730		*/ if(p == 0) ans = 0; else ans = ~0; *pr = *pg = *pb = ans;
1992/1112		p &= (1<<(1<<gscreen.ldepth))-1; lock(&colorlock); outb(CMRX, p); *pr = expand(inb(CM)); *pg = expand(inb(CM)); *pb = expand(inb(CM)); unlock(&colorlock);
1991/0730		}                  int setcolor(ulong p, ulong r, ulong g, ulong b) {
1992/0711		USED(p, r, g, b);
1991/0730		return 0; /* can't change mono screen colormap */
1992/1112		p &= (1<<(1<<gscreen.ldepth))-1; lock(&colorlock); outb(CMWX, p); outb(CM, r>>(32-6)); outb(CM, g>>(32-6)); outb(CM, b>>(32-6)); unlock(&colorlock); return ~0;
1991/0730		} int