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r9837 Tuesday 28th December, 2010 at 12:03:03 UTC by Robbbert
[JUPITER] Set CPU registers when loading ACE file. More games work.

[src/mess/drivers]	jupiter.c
[src/mess/machine]	jupiter.c

src/mess/machine/jupiter.c

r9836	r9837
8	8	***************************************************************************/
9	9
10	10	#include "emu.h"
	11	#include "cpu/z80/z80.h"
11	12	#include "devices/snapquik.h"
12	13	#include "includes/jupiter.h"
13	14
r9836	r9837
17	18	and compressed as follows:
18	19
19	20	ED 00        : End marker
20		ED 01 ED     : 0xED
21		ED <cnt> <byt>   : repeat <byt> count <cnt:3-240> times
	21	ED <cnt> <byt>   : repeat <byt> count <cnt:1-240> times
22	22	<byt>        : <byt>
23	23	*/
24	24
r9836	r9837
29	29
30	30	SNAPSHOT_LOAD(jupiter)
31	31	{
	32	UINT8 *RAM = memory_region(image.device().machine, "maincpu");
	33	running_device *cpu = image.device().machine->device("maincpu");
32	34	address_space *space = cputag_get_address_space(image.device().machine, "maincpu", ADDRESS_SPACE_PROGRAM);
33	35	unsigned char jupiter_repeat, jupiter_byte, loop;
34	36	int done=0, jupiter_index=0x2000;
r9836	r9837
55	57	break;
56	58	case 0x01:
57	59	image.fread(&jupiter_byte, 1);
58		space->write_byte(jupiter_index++, jupiter_byte);
	60	RAM[jupiter_index++] = jupiter_byte;
59	61	break;
60		case 0x02:
61		logerror("Sequence 0xED 0x02 found in .ace file\r\n");
62		break;
63	62	default:
64	63	image.fread(&jupiter_repeat, 1);
65	64	for (loop = 0; loop < jupiter_byte; loop++)
66		space->write_byte(jupiter_index++, jupiter_repeat);
	65	RAM[jupiter_index++] = jupiter_repeat;
67	66	break;
68	67	}
69	68	}
70	69	else
71		space->write_byte(jupiter_index++, jupiter_byte);
	70	RAM[jupiter_index++] = jupiter_byte;
72	71	}
73	72
74	73	logerror("Decoded %X bytes.\r\n", jupiter_index-0x2000);
r9836	r9837
80	79	return IMAGE_INIT_FAIL;
81	80	}
82	81
	82	/* patch CPU registers */
	83	cpu_set_reg(cpu, Z80_AF, RAM[0x2100] | (RAM[0x2101] << 8));
	84	cpu_set_reg(cpu, Z80_BC, RAM[0x2104] | (RAM[0x2105] << 8));
	85	cpu_set_reg(cpu, Z80_DE, RAM[0x2108] | (RAM[0x2109] << 8));
	86	cpu_set_reg(cpu, Z80_HL, RAM[0x210c] | (RAM[0x210d] << 8));
	87	cpu_set_reg(cpu, Z80_IX, RAM[0x2110] | (RAM[0x2111] << 8));
	88	cpu_set_reg(cpu, Z80_IY, RAM[0x2114] | (RAM[0x2115] << 8));
	89	cpu_set_reg(cpu, STATE_GENSP, RAM[0x2118] | (RAM[0x2119] << 8));
	90	cpu_set_reg(cpu, STATE_GENPC, RAM[0x211c] | (RAM[0x211d] << 8));
	91	cpu_set_reg(cpu, Z80_AF2, RAM[0x2120] | (RAM[0x2121] << 8));
	92	cpu_set_reg(cpu, Z80_BC2, RAM[0x2124] | (RAM[0x2125] << 8));
	93	cpu_set_reg(cpu, Z80_DE2, RAM[0x2128] | (RAM[0x2129] << 8));
	94	cpu_set_reg(cpu, Z80_HL2, RAM[0x212c] | (RAM[0x212d] << 8));
	95	cpu_set_reg(cpu, Z80_IM, RAM[0x2130]);
	96	cpu_set_reg(cpu, Z80_IFF1, RAM[0x2134]);
	97	cpu_set_reg(cpu, Z80_IFF2, RAM[0x2138]);
	98	cpu_set_reg(cpu, Z80_I, RAM[0x213c]);
	99	cpu_set_reg(cpu, Z80_R, RAM[0x2140]);
	100
	101	/* Copy data to the address space */
	102	for (jupiter_index = 0x2000; jupiter_index < 0x8000; jupiter_index++)
	103	space->write_byte(jupiter_index, RAM[jupiter_index]);
	104
83	105	return IMAGE_INIT_PASS;
84	106	}
85	107

src/mess/drivers/jupiter.c

r9836	r9837
50	50	static ADDRESS_MAP_START( jupiter_mem , ADDRESS_SPACE_PROGRAM, 8)
51	51	AM_RANGE(0x0000, 0x1fff) AM_ROM
52	52	AM_RANGE(0x2400, 0x27ff) AM_MIRROR(0x0400) AM_RAM AM_BASE_MEMBER(jupiter_state, videoram)
53		AM_RANGE(0x2c00, 0x2fff) AM_MIRROR(0x0400) AM_RAM AM_BASE_MEMBER(jupiter_state, charram) AM_REGION("maincpu", 0x2c00)
	53	AM_RANGE(0x2c00, 0x2fff) AM_MIRROR(0x0400) AM_RAM AM_BASE_MEMBER(jupiter_state, charram) AM_REGION("maincpu", 0xfc00)
54	54	AM_RANGE(0x3c00, 0x3fff) AM_MIRROR(0x0c00) AM_RAM
55	55	AM_RANGE(0x4000, 0xffff) AM_RAM_WRITE( jupiter_expram_w ) AM_BASE_MEMBER(jupiter_state, expram) /* Expansion RAM */
56	56	ADDRESS_MAP_END
r9836	r9837
219	219
220	220
221	221	static GFXDECODE_START( jupiter )
222		GFXDECODE_ENTRY( "maincpu", 0x2c00, jupiter_charlayout, 0, 1 )
	222	GFXDECODE_ENTRY( "maincpu", 0xfc00, jupiter_charlayout, 0, 1 )
223	223	GFXDECODE_END
224	224
225	225

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