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Made a game attempt at implementing a (sticky) keyboard. No effect yet.

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This commit is contained in:
Thomas Harte 2017-08-01 17:52:05 -04:00
parent f5b278d683
commit 2e4577f741
1 changed files with 25 additions and 4 deletions
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29
Machines/AmstradCPC/AmstradCPC.cpp
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@ -249,16 +249,30 @@ class CRTCBusHandler {
int interrupt_reset_counter_; int interrupt_reset_counter_;
}; };
struct KeyboardState {
KeyboardState() : rows{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff} {}
uint8_t rows[10];
};
class i8255PortHandler : public Intel::i8255::PortHandler { class i8255PortHandler : public Intel::i8255::PortHandler {
public: public:
i8255PortHandler(const KeyboardState &key_state) : key_state_(key_state) {}
void set_value(int port, uint8_t value) { void set_value(int port, uint8_t value) {
switch(port) { switch(port) {
case 0: case 0:
ay_->set_data_input(value); ay_->set_data_input(value);
break; break;
case 1: printf("Vsync, etc: %02x\n", value); break; case 1: printf("Vsync, etc: %02x\n", value); break;
case 2: case 2: {
// TODO: set key row: (value & 15) // TODO: the AY really should allow port communications to be active. Work needed.
// printf("%d\n", value & 15);
int key_row = value & 15;
if(key_row < 10) {
ay_->set_port_input(false, key_state_.rows[key_row]);
} else {
ay_->set_port_input(false, 0xff);
}
// TODO: set casette motor control: ((value >> 4) & 1) // TODO: set casette motor control: ((value >> 4) & 1)
// TODO: set casette output: ((value >> 5) & 1) // TODO: set casette output: ((value >> 5) & 1)
ay_->set_control_lines( ay_->set_control_lines(
@ -267,7 +281,7 @@ class i8255PortHandler : public Intel::i8255::PortHandler {
((value & 0x40) ? GI::AY38910::BC1 : 0) | ((value & 0x40) ? GI::AY38910::BC1 : 0) |
GI::AY38910::BC2 GI::AY38910::BC2
)); ));
break; } break;
} }
} }
@ -288,6 +302,7 @@ class i8255PortHandler : public Intel::i8255::PortHandler {
private: private:
std::shared_ptr<GI::AY38910> ay_; std::shared_ptr<GI::AY38910> ay_;
const KeyboardState &key_state_;
}; };
class ConcreteMachine: class ConcreteMachine:
@ -298,7 +313,8 @@ class ConcreteMachine:
crtc_counter_(HalfCycles(4)), // This starts the CRTC exactly out of phase with the memory accesses crtc_counter_(HalfCycles(4)), // This starts the CRTC exactly out of phase with the memory accesses
crtc_(crtc_bus_handler_), crtc_(crtc_bus_handler_),
crtc_bus_handler_(ram_), crtc_bus_handler_(ram_),
i8255_(i8255_port_handler_) { i8255_(i8255_port_handler_),
i8255_port_handler_(key_state_) {
// primary clock is 4Mhz // primary clock is 4Mhz
set_clock_rate(4000000); set_clock_rate(4000000);
} }
@ -440,9 +456,12 @@ class ConcreteMachine:
} }
void set_key_state(uint16_t key, bool isPressed) { void set_key_state(uint16_t key, bool isPressed) {
// if(isPressed) key_state_.rows[key >> 4] &= ~(key&7); else key_state_.rows[key >> 4] |= (key&7);
key_state_.rows[key >> 4] &= ~(key&7);
} }
void clear_all_keys() { void clear_all_keys() {
memset(key_state_.rows, 0xff, 10);
} }
private: private:
@ -462,6 +481,8 @@ class ConcreteMachine:
uint8_t *read_pointers_[4]; uint8_t *read_pointers_[4];
uint8_t *write_pointers_[4]; uint8_t *write_pointers_[4];
KeyboardState key_state_;
}; };
Machine *Machine::AmstradCPC() { Machine *Machine::AmstradCPC() {