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r9902 Monday 3rd January, 2011 at 11:23:12 UTC by Robbbert
[DIM68K] Added F4 displayer. Added crudimentary text display.

[src/mess/drivers]

dim68k.c

src/mess/drivers/dim68k.c

r9901	r9902
16	16	: driver_device(machine, config) { }
17	17
18	18	UINT16* ram;
	19	UINT8 *FNT;
19	20	};
20	21
21	22	static ADDRESS_MAP_START(dim68k_mem, ADDRESS_SPACE_PROGRAM, 16)
r9901	r9902
27	28	ADDRESS_MAP_END
28	29
29	30	/* Input ports */
30		INPUT_PORTS_START( dim68k )
	31	static INPUT_PORTS_START( dim68k )
31	32	INPUT_PORTS_END
32	33
33	34
r9901	r9902
43	44
44	45	static VIDEO_START( dim68k )
45	46	{
	47	dim68k_state *state = machine->driver_data<dim68k_state>();
	48	state->FNT = machine->region("chargen")->base();
46	49	}
47	50
	51	// Please note: This is NOT how the real video works. It is a sample, until the driver is rewritten.
48	52	static VIDEO_UPDATE( dim68k )
49	53	{
50		return 0;
	54	dim68k_state *state = screen->machine->driver_data<dim68k_state>();
	55	UINT8 y,ra,chr,gfx;
	56	UINT16 sy=0,ma=0x100,x,dchr;
	57
	58	for (y = 0; y < 25; y++)
	59	{
	60	for (ra = 0; ra < 10; ra++)
	61	{
	62	UINT16  *p = BITMAP_ADDR16(bitmap, sy++, 0);
	63
	64	for (x = ma; x < ma+40; x++)
	65	{
	66	dchr = state->ram[x]; // reads 2 characters
	67	chr = dchr>>8;
	68
	69	gfx = state->FNT[(chr<<4) | ra] ^ ((chr & 0x80) ? 0xff : 0);
	70
	71	*p++ = ( gfx & 0x80 ) ? 1 : 0;
	72	*p++ = ( gfx & 0x40 ) ? 1 : 0;
	73	*p++ = ( gfx & 0x20 ) ? 1 : 0;
	74	*p++ = ( gfx & 0x10 ) ? 1 : 0;
	75	*p++ = ( gfx & 0x08 ) ? 1 : 0;
	76	*p++ = ( gfx & 0x04 ) ? 1 : 0;
	77	*p++ = ( gfx & 0x02 ) ? 1 : 0;
	78	*p++ = ( gfx & 0x01 ) ? 1 : 0;
	79
	80	chr = dchr;
	81
	82	gfx = state->FNT[(chr<<4) | ra] ^ ((chr & 0x80) ? 0xff : 0);
	83
	84	*p++ = ( gfx & 0x80 ) ? 1 : 0;
	85	*p++ = ( gfx & 0x40 ) ? 1 : 0;
	86	*p++ = ( gfx & 0x20 ) ? 1 : 0;
	87	*p++ = ( gfx & 0x10 ) ? 1 : 0;
	88	*p++ = ( gfx & 0x08 ) ? 1 : 0;
	89	*p++ = ( gfx & 0x04 ) ? 1 : 0;
	90	*p++ = ( gfx & 0x02 ) ? 1 : 0;
	91	*p++ = ( gfx & 0x01 ) ? 1 : 0;
	92	}
	93	}
	94	ma+=40;
	95	}
	96	return 0;
51	97	}
52	98
	99	/* F4 Character Displayer */
	100	static const gfx_layout dim68k_charlayout =
	101	{
	102	8, 16,               /* 8 x 16 characters */
	103	256,               /* 256 characters */
	104	1,               /* 1 bits per pixel */
	105	{ 0 },               /* no bitplanes */
	106	/* x offsets */
	107	{ 0, 1, 2, 3, 4, 5, 6, 7 },
	108	/* y offsets */
	109	{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 9*8, 10*8, 11*8, 12*8, 13*8, 14*8, 15*8 },
	110	8*16               /* every char takes 16 bytes */
	111	};
	112
	113	static GFXDECODE_START( dim68k )
	114	GFXDECODE_ENTRY( "chargen", 0x0000, dim68k_charlayout, 0, 1 )
	115	GFXDECODE_END
	116
53	117	static MACHINE_CONFIG_START( dim68k, dim68k_state )
54		/* basic machine hardware */
55		MCFG_CPU_ADD("maincpu", M68000, XTAL_10MHz)
56		MCFG_CPU_PROGRAM_MAP(dim68k_mem)
	118	/* basic machine hardware */
	119	MCFG_CPU_ADD("maincpu", M68000, XTAL_10MHz)
	120	MCFG_CPU_PROGRAM_MAP(dim68k_mem)
57	121
58		MCFG_MACHINE_RESET(dim68k)
59
60		/* video hardware */
61		MCFG_SCREEN_ADD("screen", RASTER)
62		MCFG_SCREEN_REFRESH_RATE(50)
63		MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
64		MCFG_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
65		MCFG_SCREEN_SIZE(640, 480)
66		MCFG_SCREEN_VISIBLE_AREA(0, 640-1, 0, 480-1)
67		MCFG_PALETTE_LENGTH(2)
68		MCFG_PALETTE_INIT(black_and_white)
	122	MCFG_MACHINE_RESET(dim68k)
69	123
70		MCFG_VIDEO_START(dim68k)
71		MCFG_VIDEO_UPDATE(dim68k)
	124	/* video hardware */
	125	MCFG_SCREEN_ADD("screen", RASTER)
	126	MCFG_SCREEN_REFRESH_RATE(50)
	127	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
	128	MCFG_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
	129	MCFG_SCREEN_SIZE(640, 480)
	130	MCFG_SCREEN_VISIBLE_AREA(0, 640-1, 0, 250-1)
	131	MCFG_PALETTE_LENGTH(2)
	132	MCFG_PALETTE_INIT(black_and_white)
	133	MCFG_GFXDECODE(dim68k)
	134
	135	MCFG_VIDEO_START(dim68k)
	136	MCFG_VIDEO_UPDATE(dim68k)
72	137	MACHINE_CONFIG_END
73	138
74	139	/*
r9901	r9902
99	164	*/
100	165	/* ROM definition */
101	166	ROM_START( dim68k )
102		ROM_REGION( 0x10000, "user1", ROMREGION_ERASEFF )
	167	ROM_REGION( 0x10000, "user1", ROMREGION_ERASEFF )
103	168	ROM_LOAD16_BYTE( "mc103e.bin", 0x0000, 0x1000, CRC(4730c902) SHA1(5c4bb79ad22def721a22eb63dd05e0391c8082be))
104	169	ROM_LOAD16_BYTE( "mc104.bin",  0x0001, 0x1000, CRC(14b04575) SHA1(43e15d9ebe1c9c1bf1bcfc1be3899a49e6748200))
105	170
r9901	r9902
109	174	ROM_LOAD( "mc108.bin", 0x0000, 0x0400, CRC(687f9b0a) SHA1(ed9f1265b25f89f6d3cf8cd0a7b0fb73cb129f9f))
110	175	ROM_LOAD( "mc109.bin", 0x0000, 0x0200, CRC(4a857f98) SHA1(9f2bbc2171fc49f65aa798c9cd7799a26afd2ddf))
111	176	ROM_LOAD( "mc110.bin", 0x0000, 0x0100, CRC(e207b457) SHA1(a8987ba3d1bbdb3d8b3b11cec90c532ff09e762e))
	177
112	178	ROM_REGION( 0x10000, "copz80", ROMREGION_ERASEFF )
113		ROM_LOAD( "mc111.bin", 0x0000, 0x0020, CRC(6a380057) SHA1(6522a7b3e0af9db14a6ed04d4eec3ee6e44c2dab))
	179	ROM_LOAD( "mc111.bin", 0x0000, 0x0020, CRC(6a380057) SHA1(6522a7b3e0af9db14a6ed04d4eec3ee6e44c2dab))
	180
114	181	ROM_REGION( 0x10000, "cop8086", ROMREGION_ERASEFF )
115	182	ROM_LOAD( "mc112.bin", 0x0000, 0x0100, CRC(dfd4cdbb) SHA1(a7831d415943fa86c417066807038bccbabb2573))
116	183	ROM_LOAD( "mc113.bin", 0x0000, 0x00ef, CRC(594bdf05) SHA1(36db911a27d930e023fa12683e86e9eecfffdba6))
117	184
118		ROM_REGION( 0x1000, "gfx1", ROMREGION_ERASEFF )
119		ROM_LOAD( "mc105e.bin", 0x0000, 0x1000, CRC(7a09daa8) SHA1(844bfa579293d7c3442fcbfa21bda75fff930394))
120		ROM_REGION( 0x1000, "mb", ROMREGION_ERASEFF )    // mainboard unknown
121		ROM_LOAD( "mc102.bin", 0x0000, 0x00fa, CRC(38e2abac) SHA1(0d7e730b46fc162764c69c51dea3bbe8337b1a7d))
122		ROM_LOAD( "mc101.bin", 0x0000, 0x00fa, CRC(caffb3a0) SHA1(36f5140b306565794c4d856e0c20589b8f2a37f4))
	185	ROM_REGION( 0x1000, "chargen", ROMREGION_ERASEFF )
	186	ROM_LOAD( "mc105e.bin", 0x0000, 0x1000, CRC(7a09daa8) SHA1(844bfa579293d7c3442fcbfa21bda75fff930394))
	187
	188	ROM_REGION( 0x1000, "mb", ROMREGION_ERASEFF )   // mainboard unknown
	189	ROM_LOAD( "mc102.bin", 0x0000, 0x00fa, CRC(38e2abac) SHA1(0d7e730b46fc162764c69c51dea3bbe8337b1a7d))
	190	ROM_LOAD( "mc101.bin", 0x0000, 0x00fa, CRC(caffb3a0) SHA1(36f5140b306565794c4d856e0c20589b8f2a37f4))
123	191	ROM_END
124	192
125	193	/* Driver */

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