MAME SVN History

199869 Revisions

r17895 Friday 14th September, 2012 at 23:11:45 UTC by Barry Rodewald
(MESS) gfxultra: Very basic implementation of the linedraw register, enough to pass the BIOS' test. (no whatsnew)

[src/emu/video]	pc_vga.c pc_vga.h
[src/mess/video]	isa_vga_ati.c

trunk/src/emu/video/pc_vga.c
r17894	r17895
5252	5252	logerror("Mach8: Bresenham count write %04x\n",data);
5253	5253	}
5254	5254
	5255	WRITE16_HANDLER(mach8_linedraw_w)
	5256	{
	5257	// TODO: actually draw the lines
	5258	switch(ati.linedraw)
	5259	{
	5260	case 0: // Set current X
	5261	s3.curr_x = data;
	5262	ati.linedraw++;
	5263	break;
	5264	case 1: // Set current Y
	5265	s3.curr_y = data;
	5266	ati.linedraw++;
	5267	break;
	5268	case 2: // Line end X
	5269	s3.curr_x = data;
	5270	ati.linedraw++;
	5271	break;
	5272	case 3: // Line end Y
	5273	s3.curr_y = data;
	5274	ati.linedraw = 2;
	5275	break;
	5276	case 4: // Set current X
	5277	s3.curr_x = data;
	5278	ati.linedraw++;
	5279	break;
	5280	case 5: // Set current Y
	5281	s3.curr_y = data;
	5282	ati.linedraw = 4;
	5283	break;
	5284	}
	5285	logerror("ATI: Linedraw register write %04x, mode %i\n",data,ati.linedraw);
	5286	}
	5287
5255	5288	READ16_HANDLER(mach8_scratch0_r)
5256	5289	{
5257	5290	return ati.scratch0;

trunk/src/emu/video/pc_vga.h
r17894	r17895
125	125	WRITE16_HANDLER(mach8_vdisp_w);
126	126	READ16_HANDLER(mach8_vsync_r);
127	127	WRITE16_HANDLER(mach8_vsync_w);
	128	WRITE16_HANDLER(mach8_linedraw_w);
128	129	READ16_HANDLER(mach8_ec0_r);
129	130	WRITE16_HANDLER(mach8_ec0_w);
130	131	READ16_HANDLER(mach8_ec1_r);

trunk/src/mess/video/isa_vga_ati.c
r17894	r17895
113	113	m_isa->install16_device(0xbae8, 0xbaeb, 0, 0, FUNC(s3_foremix_r), FUNC(s3_foremix_w));
114	114	m_isa->install16_device(0xbee8, 0xbeeb, 0, 0, FUNC(s3_multifunc_r), FUNC(s3_multifunc_w));
115	115	m_isa->install16_device(0xe2e8, 0xe2eb, 0, 0, FUNC(s3_pixel_xfer_r), FUNC(s3_pixel_xfer_w));
	116	m_isa->install16_device(0xfeec, 0xfeef, 0, 0, NULL, NULL, FUNC(mach8_linedraw_w));
116	117
117	118	m_isa->install_memory(0xa0000, 0xbffff, 0, 0, FUNC(ati_mem_r), FUNC(ati_mem_w));
118	119	}

199869 Revisions