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r9446 Monday 25th October, 2010 at 21:42:44 UTC by Angelo Salese
[PC-88VA]: Converted vram functions to use 16-bit handlers

[src/mess/drivers]

pc88va.c

src/mess/drivers/pc88va.c

r9445	r9446
29	29	return 0;
30	30	}
31	31
32		static READ8_HANDLER( sys_mem_r )
	32	static READ16_HANDLER( sys_mem_r )
33	33	{
34	34	switch((bank_reg & 0xf00) >> 8)
35	35	{
36	36	case 0: // select bus slot
37		return 0xff;
	37	return 0xffff;
38	38	case 1: // TVRAM
39	39	{
40		UINT8 *tvram = memory_region(space->machine, "tvram");
	40	UINT16 *tvram = (UINT16 *)memory_region(space->machine, "tvram");
	41
41	42	if((offset & 0x30000) == 0)
42	43	return tvram[offset];
43	44
44		return 0xff;
	45	return 0xffff;
45	46	}
46	47	case 4:
47	48	{
48		UINT8 *gvram = memory_region(space->machine, "gvram");
	49	UINT16 *gvram = (UINT16 *)memory_region(space->machine, "gvram");
49	50
50	51	return gvram[offset];
51	52	}
52	53	case 8: // kanji ROM
53	54	case 9:
54	55	{
55		UINT8 *knj_ram = memory_region(space->machine, "kanji");
	56	UINT16 *knj_ram = (UINT16 *)memory_region(space->machine, "kanji");
56	57	UINT32 knj_offset;
57	58
58		knj_offset = offset + (((bank_reg & 0x100) >> 8)*0x40000);
	59	knj_offset = (offset + (((bank_reg & 0x100) >> 8)*0x40000)) / 2;
59	60
60	61	/* 0x00000 - 0x3ffff Kanji ROM 1*/
61	62	/* 0x40000 - 0x4ffff Kanji ROM 2*/
r9445	r9446
68	69	case 0xc: // Dictionary ROM
69	70	case 0xd:
70	71	{
71		UINT8 *dic_rom = memory_region(space->machine, "dictionary");
	72	UINT16 *dic_rom = (UINT16 *)memory_region(space->machine, "dictionary");
72	73	UINT32 dic_offset;
73	74
74		dic_offset = offset + (((bank_reg & 0x100) >> 8)*0x40000);
	75	dic_offset = (offset + (((bank_reg & 0x100) >> 8)*0x40000)) / 2;
75	76
76	77	return dic_rom[dic_offset];
77	78	}
78	79	}
79	80
80		return 0xff;
	81	return 0xffff;
81	82	}
82	83
83		static WRITE8_HANDLER( sys_mem_w )
	84	static WRITE16_HANDLER( sys_mem_w )
84	85	{
85	86	switch((bank_reg & 0xf00) >> 8)
86	87	{
r9445	r9446
88	89	break;
89	90	case 1: // TVRAM
90	91	{
91		UINT8 *tvram = memory_region(space->machine, "tvram");
	92	UINT16 *tvram = (UINT16 *)memory_region(space->machine, "tvram");
92	93
93	94	if((offset & 0x30000) == 0)
94		tvram[offset] = data;
	95	COMBINE_DATA(&tvram[offset]);
95	96	}
96	97	break;
97	98	case 4: // TVRAM
98	99	{
99		UINT8 *gvram = memory_region(space->machine, "gvram");
	100	UINT16 *gvram = (UINT16 *)memory_region(space->machine, "gvram");
100	101
101		gvram[offset] = data;
	102	COMBINE_DATA(&gvram[offset]);
102	103	}
103	104	break;
104		case 8: // kanji ROM
	105	case 8: // kanji ROM, backup RAM at 0xb0000 - 0xb3fff
105	106	case 9:
106	107	{
107		UINT8 *knj_ram = memory_region(space->machine, "kanji");
	108	UINT16 *knj_ram = (UINT16 *)memory_region(space->machine, "kanji");
108	109	UINT32 knj_offset;
109	110
110	111	knj_offset = offset + (((bank_reg & 0x100) >> 8)*0x40000);
111	112
112	113	if(knj_offset >= 0x50000 && knj_offset <= 0x53fff)
113		knj_ram[knj_offset] = data;
	114	COMBINE_DATA(&knj_ram[knj_offset]);
114	115	}
115	116	break;
116	117	case 0xc: // Dictionary ROM
117	118	case 0xd:
118	119	{
119		// ...
	120	// NOP?
120	121	}
121	122	break;
122	123	}
r9445	r9446
125	126	static ADDRESS_MAP_START( pc88va_map, ADDRESS_SPACE_PROGRAM, 16 )
126	127	AM_RANGE(0x00000, 0x7ffff) AM_RAM
127	128	//   AM_RANGE(0x80000, 0x9ffff) AM_RAM // EMM
128		AM_RANGE(0xa0000, 0xdffff) AM_READWRITE8(sys_mem_r,sys_mem_w,0xffff)
	129	AM_RANGE(0xa0000, 0xdffff) AM_READWRITE(sys_mem_r,sys_mem_w)
129	130	AM_RANGE(0xe0000, 0xeffff) AM_ROMBANK("rom00_bank")
130	131	AM_RANGE(0xf0000, 0xfffff) AM_ROMBANK("rom10_bank")
131	132	ADDRESS_MAP_END

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