2 Skelton for retropc emulator
4 Author : Takeda.Toshiya
17 #define SIG_I8251_RECV 0
18 #define SIG_I8251_BREAK 1
19 #define SIG_I8251_DSR 2
20 #define SIG_I8251_CLEAR 3
21 #define SIG_I8251_LOOPBACK 4
26 class I8251 : public DEVICE
30 uint8_t recv, status, mode;
31 bool txen, rxen, loopback;
34 outputs_t outputs_out;
35 outputs_t outputs_rxrdy;
36 outputs_t outputs_syndet;
37 outputs_t outputs_txrdy;
38 outputs_t outputs_txe;
39 outputs_t outputs_dtr;
40 outputs_t outputs_rst;
48 I8251(VM* parent_vm, EMU* parent_emu) : DEVICE(parent_vm, parent_emu)
50 initialize_output_signals(&outputs_out);
51 initialize_output_signals(&outputs_rxrdy);
52 initialize_output_signals(&outputs_syndet);
53 initialize_output_signals(&outputs_txrdy);
54 initialize_output_signals(&outputs_txe);
55 initialize_output_signals(&outputs_dtr);
56 initialize_output_signals(&outputs_rst);
57 set_device_name(_T("i8251 SIO"));
65 void write_io8(uint32_t addr, uint32_t data);
66 uint32_t read_io8(uint32_t addr);
67 void write_signal(int id, uint32_t data, uint32_t mask);
68 void event_callback(int event_id, int err);
69 void save_state(FILEIO* state_fio);
70 bool load_state(FILEIO* state_fio);
73 void set_context_out(DEVICE* device, int id)
75 register_output_signal(&outputs_out, device, id, 0xff);
77 void set_context_rxrdy(DEVICE* device, int id, uint32_t mask)
79 register_output_signal(&outputs_rxrdy, device, id, mask);
81 void set_context_syndet(DEVICE* device, int id, uint32_t mask)
83 register_output_signal(&outputs_syndet, device, id, mask);
85 void set_context_txrdy(DEVICE* device, int id, uint32_t mask)
87 register_output_signal(&outputs_txrdy, device, id, mask);
89 void set_context_txe(DEVICE* device, int id, uint32_t mask)
91 register_output_signal(&outputs_txe, device, id, mask);
93 void set_context_dtr(DEVICE* device, int id, uint32_t mask)
95 register_output_signal(&outputs_dtr, device, id, mask);
97 void set_context_rst(DEVICE* device, int id, uint32_t mask)
99 register_output_signal(&outputs_rst, device, id, mask);