bool g64_format::save(io_generic *io, floppy_image *image)
{
int tracks, heads;
image->get_actual_geometry(tracks, heads);
tracks = TRACK_COUNT * heads;
// write header
UINT8 header[] = { 'G', 'C', 'R', '-', '1', '5', '4', '1', 0x00, tracks, TRACK_LENGTH & 0xff, TRACK_LENGTH >> 8 };
io_generic_write(io, header, POS_SIGNATURE, sizeof(header));
// write tracks
for (int head = 0; head < heads; head++) {
int tracks_written = 0;
dynamic_buffer trackbuf(TRACK_LENGTH-2);
for (int track = 0; track < TRACK_COUNT; track++) {
UINT32 tpos = POS_TRACK_OFFSET + (track * 4);
UINT32 spos = tpos + (tracks * 4);
UINT32 dpos = POS_TRACK_OFFSET + (tracks * 4 * 2) + (tracks_written * TRACK_LENGTH);
io_generic_write_filler(io, 0x00, tpos, 4);
io_generic_write_filler(io, 0x00, spos, 4);
if (image->get_buffer(track, head).size() <= 1)
continue;
int track_size;
int speed_zone;
// figure out the cell size and speed zone from the track data
if ((speed_zone = generate_bitstream(track, head, 3, &trackbuf[0], track_size, image)) == -1)
if ((speed_zone = generate_bitstream(track, head, 2, &trackbuf[0], track_size, image)) == -1)
if ((speed_zone = generate_bitstream(track, head, 1, &trackbuf[0], track_size, image)) == -1)
if ((speed_zone = generate_bitstream(track, head, 0, &trackbuf[0], track_size, image)) == -1)
throw emu_fatalerror("g64_format: Cannot determine speed zone for track %u", track);
LOG_FORMATS("head %u track %u size %u cell %u\n", head, track, track_size, c1541_cell_size[speed_zone]);
UINT8 track_offset[4];
UINT8 speed_offset[4];
UINT8 track_length[2];
place_integer_le(track_offset, 0, 4, dpos);
place_integer_le(speed_offset, 0, 4, speed_zone);
place_integer_le(track_length, 0, 2, track_size/8);
io_generic_write(io, track_offset, tpos, 4);
io_generic_write(io, speed_offset, spos, 4);
io_generic_write_filler(io, 0xff, dpos, TRACK_LENGTH);
io_generic_write(io, track_length, dpos, 2);
io_generic_write(io, &trackbuf[0], dpos + 2, track_size);
tracks_written++;
}
}
return true;
}
bool g64_format::save(io_generic *io, floppy_image *image)
{
UINT8 header[] = { 'G', 'C', 'R', '-', '1', '5', '4', '1', 0x00, 0x54, TRACK_LENGTH & 0xff, TRACK_LENGTH >> 8 };
io_generic_write(io, header, SIGNATURE, sizeof(header));
int head = 0;
int tracks_written = 0;
for (int track = 0; track < 84; track++) {
offs_t tpos = TRACK_OFFSET + track * 4;
offs_t spos = SPEED_ZONE + track * 4;
offs_t dpos = TRACK_DATA + tracks_written * TRACK_LENGTH;
io_generic_write_filler(io, 0x00, tpos, 4);
io_generic_write_filler(io, 0x00, spos, 4);
if (image->get_track_size(track, head) <= 1)
continue;
UINT8 *trackbuf = global_alloc_array(UINT8, TRACK_LENGTH-2);
int track_size;
int speed_zone;
// figure out the cell size and speed zone from the track data
if ((speed_zone = generate_bitstream(track, head, 3, trackbuf, track_size, image)) == -1)
if ((speed_zone = generate_bitstream(track, head, 2, trackbuf, track_size, image)) == -1)
if ((speed_zone = generate_bitstream(track, head, 1, trackbuf, track_size, image)) == -1)
if ((speed_zone = generate_bitstream(track, head, 0, trackbuf, track_size, image)) == -1)
throw emu_fatalerror("g64_format: Cannot determine speed zone for track %u", track);
LOG_FORMATS("track %u size %u cell %u\n", track, track_size, c1541_cell_size[speed_zone]);
UINT8 track_offset[4];
UINT8 speed_offset[4];
UINT8 track_length[2];
place_integer_le(track_offset, 0, 4, dpos);
place_integer_le(speed_offset, 0, 4, speed_zone);
place_integer_le(track_length, 0, 2, track_size/8);
io_generic_write(io, track_offset, tpos, 4);
io_generic_write(io, speed_offset, spos, 4);
io_generic_write_filler(io, 0xff, dpos, TRACK_LENGTH);
io_generic_write(io, track_length, dpos, 2);
io_generic_write(io, trackbuf, dpos + 2, track_size);
tracks_written++;
global_free(trackbuf);
}
return true;
}
/* save a directory entry to disk */
static imgtoolerr_t vzdos_set_dirent(imgtool_image *img, int index, vzdos_dirent ent)
{
int ret, entry;
UINT8 buffer[DATA_SIZE + 2];
/* read current sector with entries */
ret = vzdos_read_sector_data(img, 0, (int) index / 8, buffer);
if (ret) return (imgtoolerr_t)ret;
entry = ((index % 8) * sizeof(vzdos_dirent));
memcpy(&buffer[entry], &ent, 10);
place_integer_le(buffer, entry + 10, 1, ent.start_track);
place_integer_le(buffer, entry + 11, 1, ent.start_sector);
place_integer_le(buffer, entry + 12, 2, ent.start_address);
place_integer_le(buffer, entry + 14, 2, ent.end_address);
/* save new sector */
ret = vzdos_write_sector_data(img, 0, (int) index / 8, buffer);
if (ret) return (imgtoolerr_t)ret;
return IMGTOOLERR_SUCCESS;
}
/* write data to sector */
static imgtoolerr_t vzdos_write_sector_data(imgtool_image *img, int track, int sector, UINT8 *data)
{
int ret, data_start;
UINT8 buffer[DATA_SIZE + 4]; /* data + checksum */
ret = vzdos_get_data_start(img, track, sector, &data_start);
if (ret) return (imgtoolerr_t)ret;
memcpy(buffer, data, DATA_SIZE + 2);
place_integer_le(buffer, DATA_SIZE + 2, 2, chksum16(data, DATA_SIZE + 2));
ret = floppy_write_sector(imgtool_floppy(img), 0, track, sector_order[sector], data_start, buffer, sizeof(buffer), 0); /* TODO: pass ddam argument from imgtool */
if (ret) return (imgtoolerr_t)ret;
return IMGTOOLERR_SUCCESS;
}
static imgtoolerr_t vzsnapshot_readfile(imgtool_partition *partition, const char *filename, const char *fork, imgtool_stream *destf)
{
imgtoolerr_t ret;
imgtool_image *image = imgtool_partition_image(partition);
vzdos_dirent entry;
UINT8 header[24];
/* get directory entry from disk */
ret = vzdos_get_dirent_fname(image, filename, &entry);
if (ret) return ret;
/* prepare header */
header[0] = 'V';
header[1] = 'Z';
header[2] = 'F';
switch (entry.ftype) {
case 'B':
header[3] = '1';
header[21] = 0xF1;
break;
case 'T':
header[3] = '0';
header[21] = 0xF0;
break;
default:
memset(header, 0x00, 4);
header[21] = 0x00;
}
memset(header + 4, 0x00, 17);
memcpy(header + 4, entry.fname, vzdos_get_fname_len(entry.fname) + 1);
place_integer_le(header, 22, 2, entry.start_address);
/* write header to file */
stream_write(destf, header, sizeof(header));
/* write data to file */
ret = vzdos_diskimage_readfile(partition, filename, "", destf);
if (ret) return ret;
return IMGTOOLERR_SUCCESS;
}
