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r6537 Friday 4th December, 2009 at 22:16:32 UTC by Tim Schuerewegen
Added support for command 30/65 (unique id) to the SmartMedia device and fixed a READID bug. These two changes allow the GP32 driver to load copy protected games from SmartMedia cards.

[src/mess/machine]

smartmed.c

src/mess/machine/smartmed.c

r6536	r6537
72	72	int log2_pages_per_block;   // log2 of number of pages per erase block (usually 4 or 5)
73	73
74	74	UINT8 *data_ptr;   // FEEPROM data area
	75	UINT8 *data_uid_ptr;
75	76
76	77	enum
77	78	{
r6536	r6537
80	81	SM_M_PROGRAM,   // program page data
81	82	SM_M_ERASE,      // erase block data
82	83	SM_M_READSTATUS,// read status
83		SM_M_READID      // read ID
	84	SM_M_READID,      // read ID
	85	SM_M_30
84	86	} mode;            // current operation mode
85	87	enum
86	88	{
r6536	r6537
97	99	int accumulated_status;   // accumulated status
98	100
99	101	UINT8 *pagereg;   // page register used by program command
100		UINT8 id[2];      // chip ID
	102	UINT8 id[3];      // chip ID
101	103	UINT8 mp_opcode;   // multi-plane operation code
	104
	105	int mode_3065;
102	106	};
103	107
104	108
r6536	r6537
124	128	sm->num_pages = 0;
125	129	sm->log2_pages_per_block = 0;
126	130	sm->data_ptr = NULL;
	131	sm->data_uid_ptr = NULL;
127	132	sm->mode = SM_M_INIT;
128	133	sm->pointer_mode = SM_PM_A;
129	134	sm->page_addr = 0;
r6536	r6537
131	136	sm->status = 0x40;
132	137	sm->accumulated_status = 0;
133	138	sm->pagereg = NULL;
134		sm->id[0] = sm->id[1] = 0;
	139	sm->id[0] = sm->id[1] = sm->id[2] = 0;
135	140	sm->mp_opcode = 0;
	141	sm->mode_3065 = 0;
136	142	}
137	143
138	144	/*
r6536	r6537
151	157	return INIT_FAIL;
152	158	}
153	159
154		if (custom_header.version != 0)
	160	if (custom_header.version > 1)
155	161	{
156	162	return INIT_FAIL;
157	163	}
r6536	r6537
161	167	sm->num_pages = get_UINT32BE(custom_header.num_pages);
162	168	sm->log2_pages_per_block = get_UINT32BE(custom_header.log2_pages_per_block);
163	169	sm->data_ptr = auto_alloc_array(image->machine, UINT8, sm->page_total_size*sm->num_pages);
	170	sm->data_uid_ptr = auto_alloc_array(image->machine, UINT8, 256 + 16);
164	171	sm->mode = SM_M_INIT;
165	172	sm->pointer_mode = SM_PM_A;
166	173	sm->page_addr = 0;
r6536	r6537
170	177	sm->status |= 0x80;
171	178	sm->accumulated_status = 0;
172	179	sm->pagereg = auto_alloc_array(image->machine, UINT8, sm->page_total_size);
173		sm->id[0] = sm->id[1] = 0;
	180	sm->id[0] = sm->id[1] = sm->id[2] = 0;
174	181
175		image_fread(image, sm->id, 2);
176		image_fread(image, &sm->mp_opcode, 1);
	182	if (custom_header.version == 0)
	183	{
	184	image_fread(image, sm->id, 2);
	185	image_fread(image, &sm->mp_opcode, 1);
	186	}
	187	else if (custom_header.version == 1)
	188	{
	189	image_fread(image, sm->id, 3);
	190	image_fread(image, &sm->mp_opcode, 1);
	191	image_fread(image, sm->data_uid_ptr, 256 + 16);
	192	}
177	193	image_fread(image, sm->data_ptr, sm->page_total_size*sm->num_pages);
178	194
179	195	return INIT_PASS;
r6536	r6537
191	207	sm->num_pages = 0;
192	208	sm->log2_pages_per_block = 0;
193	209	sm->data_ptr = NULL;
	210	sm->data_uid_ptr = NULL;
194	211	sm->mode = SM_M_INIT;
195	212	sm->pointer_mode = SM_PM_A;
196	213	sm->page_addr = 0;
r6536	r6537
198	215	sm->status = 0x40;
199	216	sm->accumulated_status = 0;
200	217	sm->pagereg = auto_alloc_array(image->machine, UINT8, sm->page_total_size);
201		sm->id[0] = sm->id[1] = 0;
	218	sm->id[0] = sm->id[1] = sm->id[2] = 0;
202	219	sm->mp_opcode = 0;
	220	sm->mode_3065 = 0;
203	221
204	222	return;
205	223	}
r6536	r6537
233	251	sm->pointer_mode = SM_PM_A;
234	252	sm->status = (sm->status & 0x80) | 0x40;
235	253	sm->accumulated_status = 0;
	254	sm->mode_3065 = 0;
236	255	break;
237	256	case 0x00:
238	257	sm->mode = SM_M_READ;
r6536	r6537
317	336	break;*/
318	337	case 0x90:
319	338	sm->mode = SM_M_READID;
	339	sm->addr_load_ptr = 0;
320	340	break;
321	341	/*case 0x91:
322	342	break;*/
	343	case 0x30:
	344	sm->mode = SM_M_30;
	345	break;
	346	case 0x65:
	347	if (sm->mode != SM_M_30)
	348	{
	349	logerror("smartmedia: unexpected address port write\n");
	350	sm->mode = SM_M_INIT;
	351	}
	352	else
	353	{
	354	sm->mode_3065 = 1;
	355	}
	356	break;
323	357	default:
324	358	logerror("smartmedia: unsupported command 0x%02x\n", data);
325	359	sm->mode = SM_M_INIT;
r6536	r6537
356	390	sm->pointer_mode = SM_PM_A;
357	391	break;
358	392	case SM_PM_C:
359		sm->byte_addr = (data & 0x0f) + sm->page_data_size;
	393	if (!sm->mode_3065)
	394	sm->byte_addr = (data & 0x0f) + sm->page_data_size;
	395	else
	396	sm->byte_addr = (data & 0x0f) + 256;
360	397	break;
361	398	}
362	399	}
r6536	r6537
371	408	sm->addr_load_ptr++;
372	409	break;
373	410	case SM_M_READSTATUS:
	411	case SM_M_30:
374	412	logerror("smartmedia: unexpected address port write\n");
375	413	break;
376	414	case SM_M_READID:
r6536	r6537
395	433	switch (sm->mode)
396	434	{
397	435	case SM_M_INIT:
	436	case SM_M_30:
398	437	logerror("smartmedia: unexpected data port read\n");
399	438	break;
400	439	case SM_M_READ:
401		reply = sm->data_ptr[sm->page_addr*sm->page_total_size + sm->byte_addr];
	440	if (!sm->mode_3065)
	441	reply = sm->data_ptr[sm->page_addr*sm->page_total_size + sm->byte_addr];
	442	else
	443	reply = sm->data_uid_ptr[sm->page_addr*sm->page_total_size + sm->byte_addr];
402	444	sm->byte_addr++;
403	445	if (sm->byte_addr == sm->page_total_size)
404	446	{
r6536	r6537
418	460	reply = sm->status & 0xc1;
419	461	break;
420	462	case SM_M_READID:
421		if (sm->byte_addr < 2)
	463	if (sm->byte_addr < 3)
422	464	reply = sm->id[sm->byte_addr];
	465	sm->byte_addr++;
423	466	break;
424	467	}
425	468
r6536	r6537
440	483	{
441	484	case SM_M_INIT:
442	485	case SM_M_READ:
	486	case SM_M_30:
443	487	logerror("smartmedia: unexpected data port write\n");
444	488	break;
445	489	case SM_M_PROGRAM:

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