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/*********************************************************************
formats/g64_dsk.h
Commodore 1541 GCR disk image format
*********************************************************************/
#ifndef G64_DSK_H_
#define G64_DSK_H_
#include "flopimg.h"
#include "imageutl.h"
class g64_format : public floppy_image_format_t {
public:
g64_format();
virtual const char *name() const;
virtual const char *description() const;
virtual const char *extensions() const;
virtual int identify(io_generic *io, UINT32 form_factor);
virtual bool load(io_generic *io, UINT32 form_factor, floppy_image *image);
virtual bool save(io_generic *io, floppy_image *image);
virtual bool supports_save() const;
protected:
static const UINT32 c1541_cell_size[];
};
extern const floppy_format_type FLOPPY_G64_FORMAT;
// legacy
#define G64_SYNC_MARK 0x3ff /* 10 consecutive 1-bits */
#define G64_BUFFER_SIZE 16384
#define G64_SPEED_BLOCK_SIZE 1982
const int C2040_BITRATE[] =
{
XTAL_16MHz/16, /* tracks 1-17 */
XTAL_16MHz/15, /* tracks 18-24 */
XTAL_16MHz/14, /* tracks 25-30 */
XTAL_16MHz/13 /* tracks 31-42 */
};
const int C8050_BITRATE[] =
{
XTAL_12MHz/2/16, /* tracks 1-39 */
XTAL_12MHz/2/15, /* tracks 40-53 */
XTAL_12MHz/2/14, /* tracks 54-65 */
XTAL_12MHz/2/13 /* tracks 65-84 */
};
FLOPPY_IDENTIFY( g64_dsk_identify );
FLOPPY_CONSTRUCT( g64_dsk_construct );
#endif
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