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// license:BSD-3-Clause
// copyright-holders:Nigel Barnes
/***************************************************************************
Sinclair ZX Spectrum
Opus Discovery disk image formats
***************************************************************************/
#include "opd_dsk.h"
opd_format::opd_format() : wd177x_format(formats)
{
}
const char *opd_format::name() const noexcept
{
return "opd";
}
const char *opd_format::description() const noexcept
{
return "Opus Discovery disk image";
}
const char *opd_format::extensions() const noexcept
{
return "opd,opu";
}
int opd_format::identify(util::random_read &io, uint32_t form_factor, const std::vector<uint32_t> &variants) const
{
int const type = find_size(io, form_factor, variants);
if (type != -1)
return FIFID_SIZE;
return 0;
}
int opd_format::get_image_offset(const format &f, int head, int track) const
{
return (f.track_count * head + track) * compute_track_size(f);
}
const opd_format::format opd_format::formats[] =
{
{ // 180k 40 track single sided double density - gaps unverified
floppy_image::FF_35, floppy_image::SSSD, floppy_image::MFM,
2000, 18, 40, 1, 256, {}, 0, {}, 36, 22, 27
},
{ // 360k 40 track double sided double density - gaps unverified
floppy_image::FF_35, floppy_image::DSSD, floppy_image::MFM,
2000, 18, 40, 2, 256, {}, 0, {}, 36, 22, 27
},
{}
};
const opd_format FLOPPY_OPD_FORMAT;
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