mirror of
https://github.com/devinacker/bsnes-plus.git
synced 2025-04-02 10:52:46 -04:00
cba7d05f72
fixed bug where floppy data buffer from previous session would be saved to next session's floppy buffer when cartridge loaded. added xml parsing option for remapping dos added FDC_RESET_STANDBY debugging output, however standby and clock functionality are not implemented yet. added debugging output detecting whether a floppy disk image already exists for a current rom, and creates a new disk only if one doesn't exist.
118 lines
2.5 KiB
C++
118 lines
2.5 KiB
C++
class DOSSerial {
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public:
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void init();
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void reset();
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void power();
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void unload();
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// CPU interface ($5f0x)
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uint8 read(uint3 addr);
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void write(uint3 addr, uint8 data);
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// peripheral->CPU
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void send_data(bool channel, uint8 data);
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void serialize(serializer&);
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DOSSerial();
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~DOSSerial();
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private:
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struct Channel {
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uint8 rx_buffer[3];
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uint8 rx_count;
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bool rx_overflow;
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bool rx_enable;
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uint3 rx_irq_enable;
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bool rx_irq_pending;
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uint8 tx_buffer;
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uint8 tx_count;
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bool tx_underflow;
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bool tx_enable;
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bool tx_irq_enable;
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bool tx_irq_pending;
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uint8 nreg;
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} channels[2];
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bool irq_enable;
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void reset(bool channel);
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uint8 irq_status() const;
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friend class DOS;
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};
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class DOSFloppy {
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public:
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void init();
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void reset();
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void power();
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void unload();
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// CPU interface ($5f2x)
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uint8 read(bool addr);
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void write(bool addr, uint8 data);
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void terminate();
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void serialize(serializer&);
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DOSFloppy();
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~DOSFloppy();
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private:
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struct upd765_t *fdc;
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struct fdd_t *fdd;
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// uPD765 callbacks
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static int seek_track(int drive, int track, void* user_data);
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int seek_track(int drive, int track);
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static int seek_sector(int drive, struct upd765_sectorinfo_t* info, void* user_data);
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int seek_sector(int drive, struct upd765_sectorinfo_t* info);
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static int read_sector(int drive, uint8_t h, void* user_data, uint8_t* data);
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int read_sector(int drive, uint8_t h, uint8_t* data);
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static int write_sector(int drive, uint8_t h, void* user_data, uint8_t data);
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int write_sector(int drive, uint8_t h, uint8_t data);
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static int track_info(int drive, int side, void* user_data, struct upd765_sectorinfo_t* info);
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int track_info(int drive, int side, struct upd765_sectorinfo_t* info);
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static void drive_info(int drive, void* user_data, struct upd765_driveinfo_t* info);
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void drive_info(int drive, struct upd765_driveinfo_t* info);
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static void irq_set(void* user_data, bool status);
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void irq_set(bool status);
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bool irq_pending;
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bool irq_status() const;
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friend class DOS;
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};
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class DOS : public Memory {
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public:
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void init();
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void enable();
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void power();
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void reset();
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void unload();
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void serialize(serializer&);
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uint8 read(unsigned addr);
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void write(unsigned addr, uint8 data);
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// see nall::Keyboard::Scancode
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void send_key(unsigned scancode, bool on);
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// update pending serial/floppy IRQs
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void irq_process();
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DOS();
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~DOS();
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private:
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DOSSerial serial;
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DOSFloppy floppy;
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};
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extern DOS dos;
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