MAME SVN History

199869 Revisions

r33675 Thursday 4th December, 2014 at 20:04:16 UTC by Curt Coder
[MESS] victor9k: Floppy WIP. (nw)

[src/lib/formats]

victor9k_dsk.c victor9k_dsk.h

trunk/src/lib/formats/victor9k_dsk.c
r242186	r242187
39	39	Interleave factor 3
40	40	cell 2.13 usec
41	41
	42
	43	Boot Disc Label Format
	44	Track 0 Sector 0
	45
	46	Byte
	47	Offset Name Description
	48
	49	0 System disc ID literally, ff,00h for a system
	50	disc
	51
	52	2 Load address paragraph to load booted
	53	program at. If zero then boot
	54	loads in high memory.
	55
	56	4 Length paragraph count to load.
	57
	58	6 Entry offset I.P. value for transfer of
	59	control.
	60
	61	8 Entry segment C.S. value for transfer of
	62	control.
	63
	64	10 I.D. disc identifier.
	65
	66	18 Part number system identifier - displayed
	67	by early versions of boot.
	68
	69	26 Sector size byte count for sectors.
	70
	71	28 Data start first data sector on disc
	72	(absolute sectors).
	73
	74	30 Boot start first absolute sector of
	75	program for boot to load at
	76	'load address' for 'length'
	77	paragraphs.
	78
	79	32 Flags indicators:
	80	bit meaning
	81	15-12 interleave factor
	82	(0-15)
	83	0 0=single sided
	84	1=double sided
	85
	86	34 Disc type 00 = CP/M
	87	01 = MS-DOS
	88
	89	35 Reserved
	90
	91	38 Speed table information for speed control
	92	proc.
	93
	94	56 Zone table high track for each zone.
	95
	96	71 Sector/track sectors per track for each
	97	zone.
42	98	*/
43	99
44	100	#include "emu.h"
r242186	r242187
84	140	return 0;
85	141	}
86	142
	143	void victor9k_format::log_boot_sector(UINT8 *data)
	144	{
	145	// System disc ID
	146	logerror("System disc: %s\n", ((data[0] == 0xff) && (data[1] == 0x00)) ? "yes" : "no");
	147
	148	// Load address
	149	logerror("Load address: %04x\n", (data[1] << 8) \| data[2]);
	150
	151	// Length
	152	logerror("Length: %04x\n", (data[3] << 8) \| data[4]);
	153
	154	// Entry offset
	155	logerror("Entry offset: %04x\n", (data[5] << 8) \| data[6]);
	156
	157	// Entry segment
	158	logerror("Entry segment: %04x\n", (data[7] << 8) \| data[8]);
	159
	160	// I.D.
	161	//logerror("I.D.: %s\n", data[10]);
	162
	163	// Part number
	164	//logerror("Part number: %s\n", data[18]);
	165
	166	// Sector size
	167	logerror("Sector size: %04x\n", (data[25] << 8) \| data[26]);
	168
	169	// Data start
	170	logerror("Data start: %04x\n", (data[27] << 8) \| data[28]);
	171
	172	// Boot start
	173	logerror("Boot start: %04x\n", (data[29] << 8) \| data[30]);
	174
	175	// Flags
	176	logerror("%s sided\n", BIT(data[33], 0) ? "Double" : "Single");
	177	logerror("Interleave factor: %u\n", data[32] >> 4);
	178
	179	// Disc type
	180	switch (data[34]) {
	181	case 0x00: logerror("Disc type: CP/M\n"); break;
	182	case 0x01: logerror("Disc type: MS-DOS\n"); break;
	183	default: logerror("Disc type: unknown\n"); break;
	184	}
	185
	186	// Speed table
	187	logerror("Speed table: ");
	188	for (int i = 38; i < 56; i++) {
	189	logerror("%02x ", data[i]);
	190	}
	191	logerror("\n");
	192
	193	// Zone table
	194	logerror("Zone table: ");
	195	for (int i = 56; i < 71; i++) {
	196	logerror("%02x ", data[i]);
	197	}
	198	logerror("\n");
	199
	200	// Sector/track
	201	logerror("Sector/track: ");
	202	for (int i = 71; i < 86; i++) {
	203	logerror("%02x ", data[i]);
	204	}
	205	logerror("\n");
	206	}
	207
87	208	floppy_image_format_t::desc_e* victor9k_format::get_sector_desc(const format &f, int &current_size, int sector_count)
88	209	{
89	210	static floppy_image_format_t::desc_e desc[] = {
r242186	r242187
141	262
142	263	io_generic_read(io, img, 0, size);
143	264
	265	log_boot_sector(img);
	266
144	267	int track_offset = 0;
145	268
146	269	for (int head = 0; head < f.head_count; head++) {
r242186	r242187
207	330	18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18,
208	331	17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17,
209	332	16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
210		15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
211		14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
	333	15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
	334	14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
212	335	13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
213	336	12, 12, 12, 12, 12, 12, 12, 12, 12
214	337	},

trunk/src/lib/formats/victor9k_dsk.h
r242186	r242187
33	33
34	34	int find_size(io_generic *io, UINT32 form_factor);
35	35	virtual int identify(io_generic *io, UINT32 form_factor);
	36	void log_boot_sector(UINT8 *data);
36	37	floppy_image_format_t::desc_e* get_sector_desc(const format &f, int &current_size, int sector_count);
37	38	void build_sector_description(const format &f, UINT8 sectdata, offs_t sect_offs, desc_s sectors, int sector_count) const;
38	39	virtual bool load(io_generic io, UINT32 form_factor, floppy_image image);

https://github.com/mamedev/mame/commit/c0fa75215f231b45f2d7bc7aebd553d35c972b15

199869 Revisions