mirror of
https://github.com/dingusdev/dingusppc.git
synced 2024-12-26 09:29:28 +00:00
131 lines
3.5 KiB
C++
131 lines
3.5 KiB
C++
/*
|
|
DingusPPC - The Experimental PowerPC Macintosh emulator
|
|
Copyright (C) 2018-22 divingkatae and maximum
|
|
(theweirdo) spatium
|
|
|
|
(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
/** @file Macintosh Superdrive definitions. */
|
|
|
|
#ifndef MAC_SUPERDRIVE_H
|
|
#define MAC_SUPERDRIVE_H
|
|
|
|
#include <devices/common/hwcomponent.h>
|
|
#include <devices/floppy/floppyimg.h>
|
|
|
|
#include <cinttypes>
|
|
#include <memory>
|
|
#include <string>
|
|
|
|
namespace MacSuperdrive {
|
|
|
|
/** Apple Drive status request addresses. */
|
|
enum StatusAddr : uint8_t {
|
|
Step_Status = 1,
|
|
Motor_Status = 2,
|
|
Eject_Latch = 3,
|
|
Select_Head_0 = 4,
|
|
MFM_Support = 5,
|
|
Double_Sided = 6,
|
|
Drive_Exists = 7,
|
|
Disk_In_Drive = 8,
|
|
Write_Protect = 9,
|
|
Track_Zero = 0xA,
|
|
Select_Head_1 = 0xC,
|
|
Drive_Mode = 0xD,
|
|
Drive_Ready = 0xE,
|
|
Media_Kind = 0xF
|
|
};
|
|
|
|
/** Apple Drive command addresses. */
|
|
enum CommandAddr : uint8_t {
|
|
Step_Direction = 0,
|
|
Do_Step = 1,
|
|
Motor_On_Off = 2,
|
|
Reset_Eject_Latch = 4,
|
|
Switch_Drive_Mode = 5,
|
|
};
|
|
|
|
/** Type of media currently in the drive. */
|
|
enum MediaKind : uint8_t {
|
|
low_density = 0,
|
|
high_density = 1, // 1 or 2 MB disk
|
|
};
|
|
|
|
/** Disk recording method. */
|
|
enum RecMethod : int {
|
|
GCR = 0,
|
|
MFM = 1
|
|
};
|
|
|
|
typedef struct SectorHdr {
|
|
int track;
|
|
int side;
|
|
int sector;
|
|
int format;
|
|
} SectorHdr;
|
|
|
|
class MacSuperDrive : public HWComponent {
|
|
public:
|
|
MacSuperDrive();
|
|
~MacSuperDrive() = default;
|
|
|
|
void command(uint8_t addr, uint8_t value);
|
|
uint8_t status(uint8_t addr);
|
|
int insert_disk(std::string& img_path, int write_flag);
|
|
double get_current_track_delay();
|
|
double get_sector_delay();
|
|
void init_track_search(int pos);
|
|
SectorHdr next_sector_header();
|
|
char* get_sector_data_ptr(int sector_num);
|
|
|
|
protected:
|
|
void set_disk_phys_params();
|
|
void switch_drive_mode(int mode);
|
|
|
|
private:
|
|
uint8_t has_disk;
|
|
uint8_t eject_latch;
|
|
uint8_t motor_stat; // spindle motor status: 1 - on, 0 - off
|
|
uint8_t drive_mode; // drive mode: 0 - GCR, 1 - MFM
|
|
uint8_t is_ready;
|
|
uint8_t track_zero; // 1 - if head is at track zero
|
|
int step_dir; // step direction -1/+1
|
|
int cur_track; // track number the head is currently at
|
|
int cur_head; // current head number: 1 - upper, 0 - lower
|
|
int cur_sector; // current sector number
|
|
|
|
// physical parameters of the currently inserted disk
|
|
uint8_t media_kind;
|
|
uint8_t wr_protect;
|
|
uint8_t format_byte;
|
|
int rec_method;
|
|
int num_tracks;
|
|
int num_sides;
|
|
int sectors_per_track[80];
|
|
int rpm_per_track[80];
|
|
int track2lblk[80]; // convert track number to first logical block number
|
|
|
|
std::unique_ptr<FloppyImgConverter> img_conv;
|
|
|
|
std::unique_ptr<char[]> disk_data;
|
|
};
|
|
|
|
}; // namespace MacSuperdrive
|
|
|
|
#endif // MAC_SUPERDRIVE_H
|