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r8914 Friday 27th August, 2010 at 00:10:25 UTC by Angelo Salese
[MZ2500]: Added color attribute and used custom drawing code, now bios text is drawn with white

[src/mess/drivers]

mz2500.c

src/mess/drivers/mz2500.c

r8913	r8914
20	20
21	21	after some time, clear work ram [$919] to 0 ... something to do with irqs?
22	22
23		currently emulation speed crawls a lot when you use the debugger,
24		comment out lines 983/984 of emu/memory.c for the time being.
25
26	23	****************************************************************************/
27	24
28	25	#include "emu.h"
r8913	r8914
52	49	static VIDEO_UPDATE( mz2500 )
53	50	{
54	51	UINT8 *vram = memory_region(screen->machine, "maincpu");
55		int x,y,count;
	52	int x,y,count,xi,yi;
56	53	//  gfx_element *gfx;// = screen->machine->gfx[0];
	54	UINT8 *gfx_data;// = pcg_bank ? memory_region(machine, "pcg") : memory_region(machine, "cgrom");
57	55
58	56	count = 0x70000;
59	57
r8913	r8914
64	62	for (x=0;x<text_col_size;x++)
65	63	{
66	64	int tile = vram[count+0x0000] & 0xff;
67		int attr = vram[count+0x800];
	65	int attr = vram[count+0x0800];
68	66	int tile_bank = vram[count+0x1000] & 0x3f;
69	67	int gfx_sel = (attr & 0x38) | (vram[count+0x1000] & 0xc0);
70		int gfx_num;
	68	//int gfx_num;
	69	int color = attr & 7;
71	70
72	71	if(gfx_sel == 0x00)
73		gfx_num = 3;
	72	gfx_data = memory_region(screen->machine,"pcg");
74	73	else
75		gfx_num = 0; //TODO
	74	gfx_data = memory_region(screen->machine,"kanji"); //TODO
76	75
77	76	tile|= tile_bank << 8;
78	77
79		drawgfx_opaque(bitmap,cliprect,screen->machine->gfx[gfx_num],tile,0,0,0,x*8,(y)*8);
	78	for(yi=0;yi<8;yi++)
	79	{
	80	for(xi=0;xi<8;xi++)
	81	{
	82	UINT8 pen;
80	83
	84	pen = ((gfx_data[tile*8+yi]>>(7-xi)) & 1) ? color : 0;
	85
	86	*BITMAP_ADDR16(bitmap, (y*8+yi), x*8+xi) = screen->machine->pens[pen];
	87	}
	88	}
	89	//drawgfx_opaque(bitmap,cliprect,screen->machine->gfx[gfx_num],tile,color,0,0,x*8,(y)*8);
	90
81	91	count++;
82	92	}
83	93	}
r8913	r8914
92	102	int attr = vram[count+0x800];
93	103	int tile_bank = vram[count+0x1000] & 0x3f;
94	104	int gfx_sel = (attr & 0x38) | (vram[count+0x1000] & 0xc0);
95		int gfx_num;
	105	//int gfx_num;
	106	int color = attr & 7;
96	107
97	108	if(gfx_sel == 0x00)
98		gfx_num = 3;
	109	gfx_data = memory_region(screen->machine,"pcg");
99	110	else
100		gfx_num = 0; //TODO
	111	gfx_data = memory_region(screen->machine,"kanji"); //TODO
101	112
102	113	tile|= tile_bank << 8;
103	114
104		drawgfx_opaque(bitmap,cliprect,screen->machine->gfx[gfx_num],tile,0,0,0,x*8,(y)*8);
105		drawgfx_opaque(bitmap,cliprect,screen->machine->gfx[gfx_num],tile+1,0,0,0,x*8,(y+1)*8);
	115	for(yi=0;yi<16;yi++)
	116	{
	117	for(xi=0;xi<8;xi++)
	118	{
	119	UINT8 pen;
106	120
	121	pen = ((gfx_data[tile*8+yi]>>(7-xi)) & 1) ? color : 0;
	122
	123	*BITMAP_ADDR16(bitmap, (y*8+yi), x*8+xi) = screen->machine->pens[pen];
	124	}
	125	}
	126
	127	//            drawgfx_opaque(bitmap,cliprect,screen->machine->gfx[gfx_num],tile,color,0,0,x*8,(y)*8);
	128	//            drawgfx_opaque(bitmap,cliprect,screen->machine->gfx[gfx_num],tile+1,color,0,0,x*8,(y+1)*8);
	129
107	130	count++;
108	131	}
109	132	}
r8913	r8914
651	674	NULL
652	675	};
653	676
	677	static PALETTE_INIT( mz2500 )
	678	{
	679	int i;
	680	for(i=0;i<8;i++)
	681	palette_set_color_rgb(machine, i,pal1bit((i & 2)>>1),pal1bit((i & 4)>>2),pal1bit((i & 1)>>0));
	682
	683	}
	684
654	685	static MACHINE_DRIVER_START( mz2500 )
655	686	/* basic machine hardware */
656	687	MDRV_CPU_ADD("maincpu", Z80, 6000000)
r8913	r8914
660	691
661	692	MDRV_MACHINE_RESET(mz2500)
662	693
663		MDRV_Z80PIO_ADD( "z80pio_0", 6000000/4, mz2500_pio0_intf ) // unknown clock / divider
664		MDRV_Z80PIO_ADD( "z80pio_1", 6000000/4, mz2500_pio1_intf )
	694	MDRV_Z80PIO_ADD( "z80pio_0", 6000000, mz2500_pio0_intf ) // unknown clock / divider
	695	MDRV_Z80PIO_ADD( "z80pio_1", 6000000, mz2500_pio1_intf )
665	696
666	697	MDRV_MB8877_ADD("mb8877a",mz2500_mb8877a_interface)
667	698	MDRV_FLOPPY_4_DRIVES_ADD(mz2500_floppy_config)
r8913	r8914
671	702	MDRV_SCREEN_ADD("screen", RASTER)
672	703	MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
673	704	MDRV_SCREEN_RAW_PARAMS(XTAL_17_73447MHz/2, 568, 0, 40*8, 312, 0, 25*8)
674		MDRV_PALETTE_LENGTH(256*2)
675		//  MDRV_PALETTE_INIT(black_and_white)
	705	MDRV_PALETTE_LENGTH(8) // TODO: it needs more than this
	706	MDRV_PALETTE_INIT(mz2500)
676	707
677	708	MDRV_GFXDECODE(mz2500)
678	709

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