dingusppc/devices/common/adb/adbdevice.h
2023-11-09 11:51:33 +01:00

79 lines
2.4 KiB
C++

/*
DingusPPC - The Experimental PowerPC Macintosh emulator
Copyright (C) 2018-23 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 Base class for Apple Desktop Bus devices. */
#ifndef ADB_DEVICE_H
#define ADB_DEVICE_H
#include <devices/common/hwcomponent.h>
#include <string>
/** Common ADB device addresses/types. */
enum {
ADB_ADDR_KBD = 2, // keyboards
ADB_ADDR_RELPOS = 3, // relative position devices (mouse)
ADB_ADDR_ABSPOS = 4, // absolute position devices (graphic tablets)
};
class AdbBus; // forward declaration to prevent compiler errors
class AdbDevice : public HWComponent {
public:
AdbDevice(std::string name);
~AdbDevice() = default;
int device_postinit() override;
virtual void reset() = 0;
virtual bool talk(const uint8_t dev_addr, const uint8_t reg_num);
virtual void listen(const uint8_t dev_addr, const uint8_t reg_num);
virtual uint8_t get_address() { return this->my_addr; };
// Attempts to poll the device. Returns the talk command corresponding to
// the device if it has data, 0 otherwise.
uint8_t poll();
protected:
uint8_t gen_random_address();
virtual bool get_register_0() { return false; };
virtual bool get_register_1() { return false; };
virtual bool get_register_2() { return false; };
virtual bool get_register_3();
virtual void set_register_0() {};
virtual void set_register_1() {};
virtual void set_register_2() {};
virtual void set_register_3() {};
uint8_t exc_event_flag = 0;
uint8_t srq_flag = 0;
uint8_t my_addr = 0;
uint8_t dev_handler_id = 0;
bool got_collision = false;
AdbBus* host_obj = nullptr;
};
#endif // ADB_DEVICE_H