Commit | Line | Data |
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cf76e892 JPM |
1 | // |
2 | // Joystick handler | |
3 | // | |
4 | // by cal2 | |
5 | // GCC/SDL port by Niels Wagenaar (Linux/WIN32) and Caz (BeOS) | |
6 | // Extensive rewrite by James Hammons | |
7 | // (C) 2013 Underground Software | |
8 | // | |
9 | // JLH = James Hammons <jlhamm@acm.org> | |
10 | // JPM = Jean-Paul Mari <djipi.mari@gmail.com> | |
11 | // | |
12 | // Who When What | |
13 | // --- ---------- ------------------------------------------------------------- | |
14 | // JLH 01/16/2010 Created this log ;-) | |
15 | // JPM 06/06/2016 Visual Studio support | |
16 | // | |
17 | ||
18 | #include "joystick.h" | |
19 | #include <string.h> // For memset() | |
20 | #include "gpu.h" | |
21 | #include "jaguar.h" | |
22 | #include "log.h" | |
23 | #include "settings.h" | |
24 | ||
25 | // Global vars | |
26 | ||
27 | static uint8_t joystick_ram[4]; | |
28 | uint8_t joypad0Buttons[21]; | |
29 | uint8_t joypad1Buttons[21]; | |
30 | bool audioEnabled = false; | |
31 | bool joysticksEnabled = false; | |
32 | ||
33 | ||
34 | bool GUIKeyHeld = false; | |
35 | extern int start_logging; | |
36 | int gpu_start_log = 0; | |
37 | int op_start_log = 0; | |
38 | int blit_start_log = 0; | |
39 | int effect_start = 0; | |
40 | int effect_start2 = 0, effect_start3 = 0, effect_start4 = 0, effect_start5 = 0, effect_start6 = 0; | |
41 | bool interactiveMode = false; | |
42 | bool iLeft, iRight, iToggle = false; | |
43 | bool keyHeld1 = false, keyHeld2 = false, keyHeld3 = false; | |
44 | int objectPtr = 0; | |
45 | bool startMemLog = false; | |
46 | extern bool doDSPDis, doGPUDis; | |
47 | ||
48 | bool blitterSingleStep = false; | |
49 | bool bssGo = false; | |
50 | bool bssHeld = false; | |
51 | ||
52 | ||
53 | void JoystickInit(void) | |
54 | { | |
55 | JoystickReset(); | |
56 | } | |
57 | ||
58 | ||
59 | void JoystickExec(void) | |
60 | { | |
61 | gpu_start_log = 0; // Only log while key down! | |
62 | effect_start = 0; | |
63 | effect_start2 = effect_start3 = effect_start4 = effect_start5 = effect_start6 = 0; | |
64 | blit_start_log = 0; | |
65 | iLeft = iRight = false; | |
66 | } | |
67 | ||
68 | ||
69 | void JoystickReset(void) | |
70 | { | |
71 | memset(joystick_ram, 0x00, 4); | |
72 | memset(joypad0Buttons, 0, 21); | |
73 | memset(joypad1Buttons, 0, 21); | |
74 | } | |
75 | ||
76 | ||
77 | void JoystickDone(void) | |
78 | { | |
79 | } | |
80 | ||
81 | ||
82 | uint16_t JoystickReadWord(uint32_t offset) | |
83 | { | |
84 | // E, D, B, 7 | |
85 | uint8_t joypad0Offset[16] = { | |
86 | 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x0C, 0xFF, 0xFF, 0xFF, 0x08, 0xFF, 0x04, 0x00, 0xFF | |
87 | }; | |
88 | uint8_t joypad1Offset[16] = { | |
89 | 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0xFF, 0xFF, 0xFF, 0x04, 0xFF, 0x08, 0x0C, 0xFF | |
90 | }; | |
91 | ||
92 | #ifdef _MSC_VER | |
93 | #pragma message("Warning: No bounds checking done in JoystickReadByte!") | |
94 | #else | |
95 | #warning "No bounds checking done in JoystickReadByte!" | |
96 | #endif // _MSC_VER | |
97 | offset &= 0x03; | |
98 | ||
99 | if (offset == 0) | |
100 | { | |
101 | if (!joysticksEnabled) | |
102 | return 0xFFFF; | |
103 | ||
104 | // Joystick data returns active low for buttons pressed, high for non- | |
105 | // pressed. | |
106 | uint16_t data = 0xFFFF; | |
107 | uint8_t offset0 = joypad0Offset[joystick_ram[1] & 0x0F]; | |
108 | uint8_t offset1 = joypad1Offset[(joystick_ram[1] >> 4) & 0x0F]; | |
109 | ||
110 | if (offset0 != 0xFF) | |
111 | { | |
112 | uint16_t mask[4] = { 0xFEFF, 0xFDFF, 0xFBFF, 0xF7FF }; | |
113 | uint16_t msk2[4] = { 0xFFFF, 0xFFFD, 0xFFFB, 0xFFF7 }; | |
114 | ||
115 | for(uint8_t i=0; i<4; i++) | |
116 | data &= (joypad0Buttons[offset0 + i] ? mask[i] : 0xFFFF); | |
117 | ||
118 | data &= msk2[offset0 / 4]; | |
119 | } | |
120 | ||
121 | if (offset1 != 0xFF) | |
122 | { | |
123 | uint16_t mask[4] = { 0xEFFF, 0xDFFF, 0xBFFF, 0x7FFF }; | |
124 | uint16_t msk2[4] = { 0xFF7F, 0xFFBF, 0xFFDF, 0xFFEF }; | |
125 | ||
126 | for(uint8_t i=0; i<4; i++) | |
127 | data &= (joypad1Buttons[offset1 + i] ? mask[i] : 0xFFFF); | |
128 | ||
129 | data &= msk2[offset1 / 4]; | |
130 | } | |
131 | ||
132 | return data; | |
133 | } | |
134 | else if (offset == 2) | |
135 | { | |
136 | // Hardware ID returns NTSC/PAL identification bit here | |
137 | // N.B.: On real H/W, bit 7 is *always* zero...! | |
138 | uint16_t data = 0xFF6F | (vjs.hardwareTypeNTSC ? 0x10 : 0x00); | |
139 | ||
140 | if (!joysticksEnabled) | |
141 | return data; | |
142 | ||
143 | // Joystick data returns active low for buttons pressed, high for non- | |
144 | // pressed. | |
145 | uint8_t offset0 = joypad0Offset[joystick_ram[1] & 0x0F]; | |
146 | uint8_t offset1 = joypad1Offset[(joystick_ram[1] >> 4) & 0x0F]; | |
147 | ||
148 | if (offset0 != 0xFF) | |
149 | { | |
150 | offset0 /= 4; // Make index 0, 1, 2, 3 instead of 0, 4, 8, 12 | |
151 | uint8_t mask[4][2] = { { BUTTON_A, BUTTON_PAUSE }, { BUTTON_B, 0xFF }, { BUTTON_C, 0xFF }, { BUTTON_OPTION, 0xFF } }; | |
152 | data &= (joypad0Buttons[mask[offset0][0]] ? 0xFFFD : 0xFFFF); | |
153 | ||
154 | if (mask[offset0][1] != 0xFF) | |
155 | data &= (joypad0Buttons[mask[offset0][1]] ? 0xFFFE : 0xFFFF); | |
156 | } | |
157 | ||
158 | if (offset1 != 0xFF) | |
159 | { | |
160 | offset1 /= 4; // Make index 0, 1, 2, 3 instead of 0, 4, 8, 12 | |
161 | uint8_t mask[4][2] = { { BUTTON_A, BUTTON_PAUSE }, { BUTTON_B, 0xFF }, { BUTTON_C, 0xFF }, { BUTTON_OPTION, 0xFF } }; | |
162 | data &= (joypad1Buttons[mask[offset1][0]] ? 0xFFF7 : 0xFFFF); | |
163 | ||
164 | if (mask[offset1][1] != 0xFF) | |
165 | data &= (joypad1Buttons[mask[offset1][1]] ? 0xFFFB : 0xFFFF); | |
166 | } | |
167 | ||
168 | return data; | |
169 | } | |
170 | ||
171 | return 0xFFFF; | |
172 | } | |
173 | ||
174 | ||
175 | void JoystickWriteWord(uint32_t offset, uint16_t data) | |
176 | { | |
177 | #ifdef _MSC_VER | |
178 | #pragma message("Warning: No bounds checking done for JoystickWriteWord!") | |
179 | #else | |
180 | #warning "No bounds checking done for JoystickWriteWord!" | |
181 | #endif // _MSC_VER | |
182 | offset &= 0x03; | |
183 | joystick_ram[offset + 0] = (data >> 8) & 0xFF; | |
184 | joystick_ram[offset + 1] = data & 0xFF; | |
185 | ||
186 | if (offset == 0) | |
187 | { | |
188 | audioEnabled = (data & 0x0100 ? true : false); | |
189 | joysticksEnabled = (data & 0x8000 ? true : false); | |
190 | } | |
191 | } | |
192 |