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Added C++ side of things. I think.

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This commit is contained in:
Thomas Harte 2016-07-04 21:48:25 -04:00
parent fef316932f
commit a49f2b41cc
1 changed files with 36 additions and 3 deletions
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39
Machines/Vic-20/Vic20.hpp
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@ -49,11 +49,20 @@ enum Key: uint16_t {
TerminateSequence = 0, NotMapped = 0xffff
};
enum JoystickInput {
Up = 0x04,
Down = 0x08,
Left = 0x10,
Right = 0x80,
Fire = 0x20
};
class UserPortVIA: public MOS::MOS6522<UserPortVIA>, public MOS::MOS6522IRQDelegate {
public:
uint8_t get_port_input(Port port) {
if(!port) {
return 0x00; // TODO: bit 6 should be high if there is no tape, low otherwise
return _portA; // TODO: bit 6 should be high if there is no tape, low otherwise
}
return 0xff;
}
@ -64,12 +73,24 @@ class UserPortVIA: public MOS::MOS6522<UserPortVIA>, public MOS::MOS6522IRQDeleg
}
}
void set_joystick_state(JoystickInput input, bool value) {
if(input != JoystickInput::Right)
{
_portA = (_portA & ~input) | (value ? 0 : input);
}
}
using MOS6522IRQDelegate::set_interrupt_status;
UserPortVIA() : _portA(0xbf) {}
private:
uint8_t _portA;
};
class KeyboardVIA: public MOS::MOS6522<KeyboardVIA>, public MOS::MOS6522IRQDelegate {
public:
KeyboardVIA() {
KeyboardVIA() : _portB(0xff) {
clear_all_keys();
}
@ -96,7 +117,7 @@ class KeyboardVIA: public MOS::MOS6522<KeyboardVIA>, public MOS::MOS6522IRQDeleg
return result;
}
return 0xff;
return _portB;
}
void set_port_output(Port port, uint8_t value, uint8_t mask) {
@ -110,9 +131,17 @@ class KeyboardVIA: public MOS::MOS6522<KeyboardVIA>, public MOS::MOS6522IRQDeleg
}
}
void set_joystick_state(JoystickInput input, bool value) {
if(input == JoystickInput::Right)
{
_portB = (_portB & ~input) | (value ? 0 : input);
}
}
using MOS6522IRQDelegate::set_interrupt_status;
private:
uint8_t _portB;
uint8_t _columns[8];
uint8_t _activation_mask;
};
@ -158,6 +187,10 @@ class Machine:
void set_key_state(Key key, bool isPressed) { _keyboardVIA.set_key_state(key, isPressed); }
void clear_all_keys() { _keyboardVIA.clear_all_keys(); }
void set_joystick_state(JoystickInput input, bool isPressed) {
_userPortVIA.set_joystick_state(input, isPressed);
_keyboardVIA.set_joystick_state(input, isPressed);
}
inline void set_use_fast_tape_hack(bool activate) { _use_fast_tape_hack = activate; }