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annotate io.h @ 724:2174f92c5f9b

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Fix bug in vdp_next_hint that was causing HINTs to fire repeatedly when they should not have fired at all based on an HINT interval that was larger than the number of active lines in the display
author Michael Pavone <pavone@retrodev.com>
date Fri, 22 May 2015 18:38:44 -0700
parents d77c79cec800
children 252dfd29831d
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1 /*
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2 Copyright 2013 Michael Pavone
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3 This file is part of BlastEm.
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4 BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text.
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5 */
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6 #ifndef IO_H_
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7 #define IO_H_
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8 #include <stdint.h>
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9 #include "tern.h"
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10
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11 enum {
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12 IO_GAMEPAD3,
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13 IO_GAMEPAD6,
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14 IO_MOUSE,
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15 IO_MENACER,
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16 IO_JUSTIFIER,
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17 IO_SEGA_MULTI,
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18 IO_EA_MULTI_A,
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19 IO_EA_MULTI_B,
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20 IO_SEGA_PARALLEL,
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21 IO_GENERIC,
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22 IO_NONE
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23 };
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24
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25 typedef struct {
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26 union {
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27 struct {
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28 uint32_t timeout_cycle;
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29 uint16_t th_counter;
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30 uint16_t gamepad_num;
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31 } pad;
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32 struct {
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33 int data_fd;
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34 int listen_fd;
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35 } stream;
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36 } device;
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37 uint8_t output;
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38 uint8_t control;
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39 uint8_t input[3];
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40 uint8_t device_type;
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41 } io_port;
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42
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43 #define GAMEPAD_TH0 0
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44 #define GAMEPAD_TH1 1
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45 #define GAMEPAD_EXTRA 2
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46 #define GAMEPAD_NONE 0xF
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47
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48 #define IO_TH0 0
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49 #define IO_TH1 1
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50 #define IO_STATE 2
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51
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52 enum {
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53 IO_WRITE_PENDING,
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54 IO_WRITTEN,
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55 IO_READ_PENDING,
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56 IO_READ
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57 };
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58
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59 void set_keybindings(io_port *ports);
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60 void setup_io_devices(tern_node * config, io_port * ports);
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61 void io_adjust_cycles(io_port * pad, uint32_t current_cycle, uint32_t deduction);
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62 void io_data_write(io_port * pad, uint8_t value, uint32_t current_cycle);
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63 uint8_t io_data_read(io_port * pad, uint32_t current_cycle);
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64 void handle_keydown(int keycode);
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65 void handle_keyup(int keycode);
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66 void handle_joydown(int joystick, int button);
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67 void handle_joyup(int joystick, int button);
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68 void handle_joy_dpad(int joystick, int dpad, uint8_t state);
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69
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70 #endif //IO_H_
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71