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comparison io.h @ 2025:e7a516f08cec

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Implement serial IO, a generic serial device type and external interrupts
author Michael Pavone <pavone@retrodev.com>
date Wed, 10 Feb 2021 20:12:16 -0800
parents d6c403135e64
children 0f54a898db03
comparison
equal deleted inserted replaced
2022:380bc5d4a2cf 2025:e7a516f08cec
22 IO_JUSTIFIER, 22 IO_JUSTIFIER,
23 IO_SEGA_MULTI, 23 IO_SEGA_MULTI,
24 IO_EA_MULTI_A, 24 IO_EA_MULTI_A,
25 IO_EA_MULTI_B, 25 IO_EA_MULTI_B,
26 IO_SEGA_PARALLEL, 26 IO_SEGA_PARALLEL,
27 IO_GENERIC 27 IO_GENERIC,
28 IO_GENERIC_SERIAL
28 }; 29 };
29 30
30 typedef struct { 31 typedef struct {
31 union { 32 union {
32 struct { 33 struct {
60 } device; 61 } device;
61 uint8_t output; 62 uint8_t output;
62 uint8_t control; 63 uint8_t control;
63 uint8_t input[3]; 64 uint8_t input[3];
64 uint32_t slow_rise_start[8]; 65 uint32_t slow_rise_start[8];
66 uint32_t serial_cycle;
67 uint32_t serial_divider;
68 uint32_t last_poll_cycle;
69 uint32_t transmit_end;
70 uint32_t receive_end;
65 uint8_t serial_out; 71 uint8_t serial_out;
72 uint8_t serial_transmitting;
66 uint8_t serial_in; 73 uint8_t serial_in;
74 uint8_t serial_receiving;
67 uint8_t serial_ctrl; 75 uint8_t serial_ctrl;
68 uint8_t device_type; 76 uint8_t device_type;
69 } io_port; 77 } io_port;
70 78
71 typedef struct { 79 typedef struct {
104 PSEUDO_BUTTON_MOTION=0xFF 112 PSEUDO_BUTTON_MOTION=0xFF
105 }; 113 };
106 114
107 void setup_io_devices(tern_node * config, rom_info *rom, sega_io *io); 115 void setup_io_devices(tern_node * config, rom_info *rom, sega_io *io);
108 void io_adjust_cycles(io_port * pad, uint32_t current_cycle, uint32_t deduction); 116 void io_adjust_cycles(io_port * pad, uint32_t current_cycle, uint32_t deduction);
117 void io_run(io_port *port, uint32_t current_cycle);
109 void io_control_write(io_port *port, uint8_t value, uint32_t current_cycle); 118 void io_control_write(io_port *port, uint8_t value, uint32_t current_cycle);
110 void io_data_write(io_port * pad, uint8_t value, uint32_t current_cycle); 119 void io_data_write(io_port * pad, uint8_t value, uint32_t current_cycle);
120 void io_tx_write(io_port *port, uint8_t value, uint32_t current_cycle);
121 void io_sctrl_write(io_port *port, uint8_t value, uint32_t current_cycle);
111 uint8_t io_data_read(io_port * pad, uint32_t current_cycle); 122 uint8_t io_data_read(io_port * pad, uint32_t current_cycle);
123 uint8_t io_rx_read(io_port * port, uint32_t current_cycle);
124 uint8_t io_sctrl_read(io_port *port, uint32_t current_cycle);
125 uint32_t io_next_interrupt(io_port *port, uint32_t current_cycle);
112 void io_serialize(io_port *port, serialize_buffer *buf); 126 void io_serialize(io_port *port, serialize_buffer *buf);
113 void io_deserialize(deserialize_buffer *buf, void *vport); 127 void io_deserialize(deserialize_buffer *buf, void *vport);
114 128
115 void io_port_gamepad_down(io_port *port, uint8_t button); 129 void io_port_gamepad_down(io_port *port, uint8_t button);
116 void io_port_gamepad_up(io_port *port, uint8_t button); 130 void io_port_gamepad_up(io_port *port, uint8_t button);