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https://github.com/holub/mame
synced 2025-04-20 15:32:45 +03:00
moof: Some fixes [Disk Blitz]
woz: put back the save support, will destroy any disk with FLUX encoded tracks though. How to handle that is still in discussion.
This commit is contained in:
Olivier Galibert
parent
c8db3ee046
commit
4f49312c46
@ -1646,7 +1646,7 @@ const char *a2_woz_format::extensions() const
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bool a2_woz_format::supports_save() const
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{
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return false;
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return true;
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}
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const uint8_t a2_woz_format::signature[8] = { 0x57, 0x4f, 0x5a, 0x31, 0xff, 0x0a, 0x0d, 0x0a };
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@ -1793,6 +1793,113 @@ bool a2_woz_format::load(util::random_read &io, uint32_t form_factor, const std:
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return true;
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}
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bool a2_woz_format::save(util::random_read_write &io, const std::vector<uint32_t> &variants, floppy_image *image) const
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{
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std::vector<std::vector<bool>> tracks(160);
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bool twosided = false;
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if(image->get_form_factor() == floppy_image::FF_525) {
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for(unsigned int i=0; i != 141; i++)
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if(image->track_is_formatted(i >> 2, 0, i & 3))
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tracks[i] = generate_bitstream_from_track(i >> 2, 0, 3915, image, i & 3);
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} else if(image->get_variant() == floppy_image::DSHD) {
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for(unsigned int i=0; i != 160; i++)
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if(image->track_is_formatted(i >> 1, i & 1)) {
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tracks[i] = generate_bitstream_from_track(i >> 1, i & 1, 1000, image);
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if(i & 1)
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twosided = true;
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}
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} else {
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// 200000000 / 60.0 * 1.979e-6 ~= 6.5967
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static const int cell_size_per_speed_zone[5] = {
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394 * 65967 / 10000,
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429 * 65967 / 10000,
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472 * 65967 / 10000,
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525 * 65967 / 10000,
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590 * 65967 / 10000
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};
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for(unsigned int i=0; i != 160; i++)
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if(image->track_is_formatted(i >> 1, i & 1)) {
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tracks[i] = generate_bitstream_from_track(i >> 1, i & 1, cell_size_per_speed_zone[i / (2*16)], image);
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if(i & 1)
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twosided = true;
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}
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}
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int max_blocks = 0;
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int total_blocks = 0;
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for(const auto &t : tracks) {
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int blocks = (t.size() + 4095) / 4096;
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total_blocks += blocks;
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if(max_blocks < blocks)
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max_blocks = blocks;
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}
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std::vector<uint8_t> data(1536 + total_blocks*512, 0);
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memcpy(&data[0], signature2, 8);
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w32(data, 12, 0x4F464E49); // INFO
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w32(data, 16, 60); // size
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data[20] = 2; // chunk version
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data[21] = image->get_form_factor() == floppy_image::FF_525 ? 1 : 2;
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data[22] = 0; // not write protected
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data[23] = 1; // synchronized, since our internal format is
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data[24] = 1; // weak bits are generated, not stored
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data[25] = 'M';
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data[26] = 'A';
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data[27] = 'M';
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data[28] = 'E';
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memset(&data[29], ' ', 32-4);
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data[57] = twosided ? 2 : 1;
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data[58] = 0; // boot sector unknown
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data[59] = image->get_form_factor() == floppy_image::FF_525 ? 32 : image->get_variant() == floppy_image::DSHD ? 8 : 16;
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w16(data, 60, 0); // compatibility unknown
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w16(data, 62, 0); // needed ram unknown
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w16(data, 64, max_blocks);
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w32(data, 80, 0x50414D54); // TMAP
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w32(data, 84, 160); // size
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uint8_t tcount = 0;
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for(int i=0; i != 160 ; i++)
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data[88 + i] = tracks[i].empty() ? 0xff : tcount++;
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w32(data, 248, 0x534B5254); // TRKS
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w32(data, 252, 1280 + total_blocks*512); // size
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uint8_t tid = 0;
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uint16_t tb = 3;
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for(int i=0; i != 160 ; i++)
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if(!tracks[i].empty()) {
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int blocks = (tracks[i].size() + 4095) / 4096;
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w16(data, 256 + tid*8, tb);
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w16(data, 256 + tid*8 + 2, blocks);
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w32(data, 256 + tid*8 + 4, tracks[i].size());
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tb += blocks;
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tid ++;
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}
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tb = 3;
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for(int i=0; i != 160 ; i++)
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if(!tracks[i].empty()) {
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int off = tb * 512;
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int size = tracks[i].size();
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for(int j=0; j != size; j++)
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if(tracks[i][j])
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data[off + (j >> 3)] |= 0x80 >> (j & 7);
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tb += (size + 4095) / 4096;
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}
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w32(data, 8, crc32r(&data[12], data.size() - 12));
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size_t actual;
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io.write_at(0, data.data(), data.size(), actual);
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return true;
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}
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uint32_t a2_woz_format::find_tag(const std::vector<uint8_t> &data, uint32_t tag)
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{
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uint32_t offset = 12;
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@ -1814,6 +1921,20 @@ uint16_t a2_woz_format::r16(const std::vector<uint8_t> &data, uint32_t offset)
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return data[offset] | (data[offset+1] << 8);
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}
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void a2_woz_format::w32(std::vector<uint8_t> &data, int offset, uint32_t value)
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{
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data[offset] = value;
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data[offset+1] = value >> 8;
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data[offset+2] = value >> 16;
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data[offset+3] = value >> 24;
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}
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void a2_woz_format::w16(std::vector<uint8_t> &data, int offset, uint16_t value)
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{
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data[offset] = value;
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data[offset+1] = value >> 8;
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}
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uint8_t a2_woz_format::r8(const std::vector<uint8_t> &data, uint32_t offset)
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{
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return data[offset];
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@ -1908,12 +2029,16 @@ bool moof_format::load(util::random_read &io, uint32_t form_factor, const std::v
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if(!flux_size)
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off_flux = 0;
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bool is_ds = r8(img, off_info + 1) == 3;
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if(is_ds)
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image->set_form_variant(floppy_image::FF_35, floppy_image::DSDD);
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else
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switch(r8(img, off_info + 1)) {
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case 1:
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image->set_form_variant(floppy_image::FF_35, floppy_image::SSDD);
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case 2:
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image->set_form_variant(floppy_image::FF_35, floppy_image::DSDD);
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case 3:
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image->set_form_variant(floppy_image::FF_35, floppy_image::DSHD);
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default:
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return false;
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}
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for (unsigned int trkid = 0; trkid != 160; trkid++) {
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int head = trkid & 1;
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@ -1954,9 +2079,6 @@ bool moof_format::load(util::random_read &io, uint32_t form_factor, const std::v
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return false;
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generate_track_from_bitstream(track, head, &img[boff], track_size, image, 0, 0xffff);
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if(!track && head && track_size >= 90000)
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image->set_variant(floppy_image::DSHD);
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}
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}
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@ -124,6 +124,7 @@ public:
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virtual int identify(util::random_read &io, uint32_t form_factor, const std::vector<uint32_t> &variants) const override;
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virtual bool load(util::random_read &io, uint32_t form_factor, const std::vector<uint32_t> &variants, floppy_image *image) const override;
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virtual bool save(util::random_read_write &io, const std::vector<uint32_t> &variants, floppy_image *image) const override;
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virtual bool supports_save() const override;
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virtual const char *name() const override;
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@ -137,6 +138,8 @@ private:
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static uint32_t r32(const std::vector<uint8_t> &data, uint32_t offset);
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static uint16_t r16(const std::vector<uint8_t> &data, uint32_t offset);
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static uint8_t r8(const std::vector<uint8_t> &data, uint32_t offset);
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static void w32(std::vector<uint8_t> &data, int offset, uint32_t value);
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static void w16(std::vector<uint8_t> &data, int offset, uint16_t value);
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static uint32_t crc32r(const uint8_t *data, uint32_t size);
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static uint32_t find_tag(const std::vector<uint8_t> &data, uint32_t tag);
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};
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