BasiliskII/src/adb.cpp

/*
 *  adb.cpp - ADB emulation (mouse/keyboard)
 *
 *  Basilisk II (C) 1997-2002 Christian Bauer
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

/*
 *  SEE ALSO
 *    Inside Macintosh: Devices, chapter 5 "ADB Manager"
 *    Technote HW 01: "ADB - The Untold Story: Space Aliens Ate My Mouse"
 */

#include <stdlib.h>

#include "sysdeps.h"
#include "cpu_emulation.h"
#include "emul_op.h"
#include "main.h"
#include "prefs.h"
#include "video.h"
#include "adb.h"

#define DEBUG 0
#include "debug.h"


// Global variables
static int mouse_x = 0, mouse_y = 0;                                                    // Mouse position
static int old_mouse_x = 0, old_mouse_y = 0;
static bool mouse_button[3] = {false, false, false};                    // Mouse button states
static bool old_mouse_button[3] = {false, false, false};
static bool relative_mouse = false;

static uint8 key_states[16];                            // Key states (Mac keycodes)
#define MATRIX(code) (key_states[code >> 3] & (1 << (~code & 7)))

// Keyboard event buffer (Mac keycodes with up/down flag)
const int KEY_BUFFER_SIZE = 16;
static uint8 key_buffer[KEY_BUFFER_SIZE];
static unsigned int key_read_ptr = 0, key_write_ptr = 0;

static uint8 mouse_reg_3[2] = {0x63, 0x01};     // Mouse ADB register 3

static uint8 key_reg_2[2] = {0xff, 0xff};       // Keyboard ADB register 2
static uint8 key_reg_3[2] = {0x62, 0x05};       // Keyboard ADB register 3

static uint8 m_keyboard_type = 0x05;

// ADB mouse motion lock (for platforms that use separate input thread)
static B2_mutex *mouse_lock;


/*
 *  Initialize ADB emulation
 */

void ADBInit(void)
{
        mouse_lock = B2_create_mutex();
        m_keyboard_type = (uint8)PrefsFindInt32("keyboardtype");
        key_reg_3[1] = m_keyboard_type;
}


/*
 *  Exit ADB emulation
 */

void ADBExit(void)
{
        if (mouse_lock) {
                B2_delete_mutex(mouse_lock);
                mouse_lock = NULL;
        }
}


/*
 *  ADBOp() replacement
 */

void ADBOp(uint8 op, uint8 *data)
{
        D(bug("ADBOp op %02x, data %02x %02x %02x\n", op, data[0], data[1], data[2]));

        // ADB reset?
        if ((op & 0x0f) == 0) {
                mouse_reg_3[0] = 0x63;
                mouse_reg_3[1] = 0x01;
                key_reg_2[0] = 0xff;
                key_reg_2[1] = 0xff;
                key_reg_3[0] = 0x62;
                key_reg_3[1] = m_keyboard_type;
                return;
        }

        // Cut op into fields
        uint8 adr = op >> 4;
        uint8 cmd = (op >> 2) & 3;
        uint8 reg = op & 3;

        // Check which device was addressed and act accordingly
        if (adr == (mouse_reg_3[0] & 0x0f)) {

                // Mouse
                if (cmd == 2) {

                        // Listen
                        switch (reg) {
                                case 3:         // Address/HandlerID
                                        if (data[2] == 0xfe)                    // Change address
                                                mouse_reg_3[0] = (mouse_reg_3[0] & 0xf0) | (data[1] & 0x0f);
                                        else if (data[2] == 1 || data[2] == 2 || data[2] == 4)  // Change device handler ID
                                                mouse_reg_3[1] = data[2];
                                        else if (data[2] == 0x00)               // Change address and enable bit
                                                mouse_reg_3[0] = (mouse_reg_3[0] & 0xd0) | (data[1] & 0x2f);
                                        break;
                        }

                } else if (cmd == 3) {

                        // Talk
                        switch (reg) {
                                case 1:         // Extended mouse protocol
                                        data[0] = 8;
                                        data[1] = 'a';                          // Identifier
                                        data[2] = 'p';
                                        data[3] = 'p';
                                        data[4] = 'l';
                                        data[5] = 300 >> 8;                     // Resolution (dpi)
                                        data[6] = 300 & 0xff;
                                        data[7] = 1;                            // Class (mouse)
                                        data[8] = 3;                            // Number of buttons
                                        break;
                                case 3:         // Address/HandlerID
                                        data[0] = 2;
                                        data[1] = mouse_reg_3[0] & 0xf0 | (rand() & 0x0f);
                                        data[2] = mouse_reg_3[1];
                                        break;
                                default:
                                        data[0] = 0;
                                        break;
                        }
                }
                D(bug(" mouse reg 3 %02x%02x\n", mouse_reg_3[0], mouse_reg_3[1]));

        } else if (adr == (key_reg_3[0] & 0x0f)) {

                // Keyboard
                if (cmd == 2) {

                        // Listen
                        switch (reg) {
                                case 2:         // LEDs/Modifiers
                                        key_reg_2[0] = data[1];
                                        key_reg_2[1] = data[2];
                                        break;
                                case 3:         // Address/HandlerID
                                        if (data[2] == 0xfe)                    // Change address
                                                        key_reg_3[0] = (key_reg_3[0] & 0xf0) | (data[1] & 0x0f);
                                        else if (data[2] == 0x00)               // Change address and enable bit
                                                key_reg_3[0] = (key_reg_3[0] & 0xd0) | (data[1] & 0x2f);
                                        break;
                        }

                } else if (cmd == 3) {

                        // Talk
                        switch (reg) {
                                case 2: {       // LEDs/Modifiers
                                        uint8 reg2hi = 0xff;
                                        uint8 reg2lo = key_reg_2[1] | 0xf8;
                                        if (MATRIX(0x6b))       // Scroll Lock
                                                reg2lo &= ~0x40;
                                        if (MATRIX(0x47))       // Num Lock
                                                reg2lo &= ~0x80;
                                        if (MATRIX(0x37))       // Command
                                                reg2hi &= ~0x01;
                                        if (MATRIX(0x3a))       // Option
                                                reg2hi &= ~0x02;
                                        if (MATRIX(0x38))       // Shift
                                                reg2hi &= ~0x04;
                                        if (MATRIX(0x36))       // Control
                                                reg2hi &= ~0x08;
                                        if (MATRIX(0x39))       // Caps Lock
                                                reg2hi &= ~0x20;
                                        if (MATRIX(0x75))       // Delete
                                                reg2hi &= ~0x40;
                                        data[0] = 2;
                                        data[1] = reg2hi;
                                        data[2] = reg2lo;
                                        break;
                                }
                                case 3:         // Address/HandlerID
                                        data[0] = 2;
                                        data[1] = key_reg_3[0] & 0xf0 | (rand() & 0x0f);
                                        data[2] = key_reg_3[1];
                                        break;
                                default:
                                        data[0] = 0;
                                        break;
                        }
                }
                D(bug(" keyboard reg 3 %02x%02x\n", key_reg_3[0], key_reg_3[1]));

        } else                                                                                          // Unknown address
                if (cmd == 3)
                        data[0] = 0;                                                            // Talk: 0 bytes of data
}


/*
 *  Mouse was moved (x/y are absolute or relative, depending on ADBSetRelMouseMode())
 */

void ADBMouseMoved(int x, int y)
{
        B2_lock_mutex(mouse_lock);
        if (relative_mouse) {
                mouse_x += x; mouse_y += y;
        } else {
                mouse_x = x; mouse_y = y;
        }
        B2_unlock_mutex(mouse_lock);
        SetInterruptFlag(INTFLAG_ADB);
        TriggerInterrupt();
}


/* 
 *  Mouse button pressed
 */

void ADBMouseDown(int button)
{
        mouse_button[button] = true;
        SetInterruptFlag(INTFLAG_ADB);
        TriggerInterrupt();
}


/*
 *  Mouse button released
 */

void ADBMouseUp(int button)
{
        mouse_button[button] = false;
        SetInterruptFlag(INTFLAG_ADB);
        TriggerInterrupt();
}


/*
 *  Set mouse mode (absolute or relative)
 */

void ADBSetRelMouseMode(bool relative)
{
        if (relative_mouse != relative) {
                relative_mouse = relative;
                mouse_x = mouse_y = 0;
        }
}


/*
 *  Key pressed ("code" is the Mac key code)
 */

void ADBKeyDown(int code)
{
        // Add keycode to buffer
        key_buffer[key_write_ptr] = code;
        key_write_ptr = (key_write_ptr + 1) % KEY_BUFFER_SIZE;

        // Set key in matrix
        key_states[code >> 3] |= (1 << (~code & 7));

        // Trigger interrupt
        SetInterruptFlag(INTFLAG_ADB);
        TriggerInterrupt();
}


/*
 *  Key released ("code" is the Mac key code)
 */

void ADBKeyUp(int code)
{
        // Add keycode to buffer
        key_buffer[key_write_ptr] = code | 0x80;        // Key-up flag
        key_write_ptr = (key_write_ptr + 1) % KEY_BUFFER_SIZE;

        // Clear key in matrix
        key_states[code >> 3] &= ~(1 << (~code & 7));

        // Trigger interrupt
        SetInterruptFlag(INTFLAG_ADB);
        TriggerInterrupt();
}


/*
 *  ADB interrupt function (executed as part of 60Hz interrupt)
 */

void ADBInterrupt(void)
{
        M68kRegisters r;

        // Return if ADB is not initialized
        uint32 adb_base = ReadMacInt32(0xcf8);
        if (!adb_base || adb_base == 0xffffffff)
                return;
        uint32 tmp_data = adb_base + 0x163;     // Temporary storage for faked ADB data

        // Get mouse state
        B2_lock_mutex(mouse_lock);
        int mx = mouse_x;
        int my = mouse_y;
        if (relative_mouse)
                mouse_x = mouse_y = 0;
        int mb[3] = {mouse_button[0], mouse_button[1], mouse_button[2]};
        B2_unlock_mutex(mouse_lock);

        uint32 key_base = adb_base + 4;
        uint32 mouse_base = adb_base + 16;

        if (relative_mouse) {

                // Mouse movement (relative) and buttons
                if (mx != 0 || my != 0 || mb[0] != old_mouse_button[0] || mb[1] != old_mouse_button[1] || mb[2] != old_mouse_button[2]) {

                        // Call mouse ADB handler
                        if (mouse_reg_3[1] == 4) {
                                // Extended mouse protocol
                                WriteMacInt8(tmp_data, 3);
                                WriteMacInt8(tmp_data + 1, (my & 0x7f) | (mb[0] ? 0 : 0x80));
                                WriteMacInt8(tmp_data + 2, (mx & 0x7f) | (mb[1] ? 0 : 0x80));
                                WriteMacInt8(tmp_data + 3, ((my >> 3) & 0x70) | ((mx >> 7) & 0x07) | (mb[2] ? 0x08 : 0x88));
                        } else {
                                // 100/200 dpi mode
                                WriteMacInt8(tmp_data, 2);
                                WriteMacInt8(tmp_data + 1, (my & 0x7f) | (mb[0] ? 0 : 0x80));
                                WriteMacInt8(tmp_data + 2, (mx & 0x7f) | (mb[1] ? 0 : 0x80));
                        }       
                        r.a[0] = tmp_data;
                        r.a[1] = ReadMacInt32(mouse_base);
                        r.a[2] = ReadMacInt32(mouse_base + 4);
                        r.a[3] = adb_base;
                        r.d[0] = (mouse_reg_3[0] << 4) | 0x0c;  // Talk 0
                        Execute68k(r.a[1], &r);

                        old_mouse_button[0] = mb[0];
                        old_mouse_button[1] = mb[1];
                        old_mouse_button[2] = mb[2];
                }

        } else {

                // Update mouse position (absolute)
                if (mx != old_mouse_x || my != old_mouse_y) {
#ifdef POWERPC_ROM
                        static const uint16 proc[] = {
                                PW(0x2f08),             // move.l a0,-(sp)
                                PW(0x2f00),             // move.l d0,-(sp)
                                PW(0x2f01),             // move.l d1,-(sp)
                                PW(0x7001),             // moveq #1,d0 (MoveTo)
                                PW(0xaadb),             // CursorDeviceDispatch
                                PW(M68K_RTS)
                        };
                        r.a[0] = ReadMacInt32(mouse_base + 4);
                        r.d[0] = mx;
                        r.d[1] = my;
                        Execute68k((uint32)proc, &r);
#else
                        WriteMacInt16(0x82a, mx);
                        WriteMacInt16(0x828, my);
                        WriteMacInt16(0x82e, mx);
                        WriteMacInt16(0x82c, my);
                        WriteMacInt8(0x8ce, ReadMacInt8(0x8cf));        // CrsrCouple -> CrsrNew
#endif
                        old_mouse_x = mx;
                        old_mouse_y = my;
                }

                // Send mouse button events
                if (mb[0] != old_mouse_button[0] || mb[1] != old_mouse_button[1] || mb[2] != old_mouse_button[2]) {
                        uint32 mouse_base = adb_base + 16;

                        // Call mouse ADB handler
                        if (mouse_reg_3[1] == 4) {
                                // Extended mouse protocol
                                WriteMacInt8(tmp_data, 3);
                                WriteMacInt8(tmp_data + 1, mb[0] ? 0 : 0x80);
                                WriteMacInt8(tmp_data + 2, mb[1] ? 0 : 0x80);
                                WriteMacInt8(tmp_data + 3, mb[2] ? 0x08 : 0x88);
                        } else {
                                // 100/200 dpi mode
                                WriteMacInt8(tmp_data, 2);
                                WriteMacInt8(tmp_data + 1, mb[0] ? 0 : 0x80);
                                WriteMacInt8(tmp_data + 2, mb[1] ? 0 : 0x80);
                        }
                        r.a[0] = tmp_data;
                        r.a[1] = ReadMacInt32(mouse_base);
                        r.a[2] = ReadMacInt32(mouse_base + 4);
                        r.a[3] = adb_base;
                        r.d[0] = (mouse_reg_3[0] << 4) | 0x0c;  // Talk 0
                        Execute68k(r.a[1], &r);

                        old_mouse_button[0] = mb[0];
                        old_mouse_button[1] = mb[1];
                        old_mouse_button[2] = mb[2];
                }
        }

        // Process accumulated keyboard events
        while (key_read_ptr != key_write_ptr) {

                // Read keyboard event
                uint8 mac_code = key_buffer[key_read_ptr];
                key_read_ptr = (key_read_ptr + 1) % KEY_BUFFER_SIZE;

                // Call keyboard ADB handler
                WriteMacInt8(tmp_data, 2);
                WriteMacInt8(tmp_data + 1, mac_code);
                WriteMacInt8(tmp_data + 2, mac_code == 0x7f ? 0x7f : 0xff);     // Power key is special
                r.a[0] = tmp_data;
                r.a[1] = ReadMacInt32(key_base);
                r.a[2] = ReadMacInt32(key_base + 4);
                r.a[3] = adb_base;
                r.d[0] = (key_reg_3[0] << 4) | 0x0c;    // Talk 0
                Execute68k(r.a[1], &r);
        }

        // Clear temporary data
        WriteMacInt32(tmp_data, 0);
        WriteMacInt32(tmp_data + 4, 0);
}
Revision:	1.11
Committed:	2004-01-10T08:54:14Z (20 years, 10 months ago) by gbeauche
Branch:	MAIN
Changes since 1.10:	+7 -7 lines
Log Message:	Make sure 68k procedures are stored on 16-bit word boundaries.
#	User	Rev	Content
1	cebix	1.1	/*
2			* adb.cpp - ADB emulation (mouse/keyboard)
3			*
4	cebix	1.8	* Basilisk II (C) 1997-2002 Christian Bauer
5	cebix	1.1	*
6			* This program is free software; you can redistribute it and/or modify
7			* it under the terms of the GNU General Public License as published by
8			* the Free Software Foundation; either version 2 of the License, or
9			* (at your option) any later version.
10			*
11			* This program is distributed in the hope that it will be useful,
12			* but WITHOUT ANY WARRANTY; without even the implied warranty of
13			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			* GNU General Public License for more details.
15			*
16			* You should have received a copy of the GNU General Public License
17			* along with this program; if not, write to the Free Software
18			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19			*/
20
21			/*
22			* SEE ALSO
23			* Inside Macintosh: Devices, chapter 5 "ADB Manager"
24			* Technote HW 01: "ADB - The Untold Story: Space Aliens Ate My Mouse"
25			*/
26
27			#include <stdlib.h>
28
29			#include "sysdeps.h"
30			#include "cpu_emulation.h"
31	nigel	1.10	#include "emul_op.h"
32	cebix	1.1	#include "main.h"
33	nigel	1.10	#include "prefs.h"
34	cebix	1.1	#include "video.h"
35			#include "adb.h"
36
37			#define DEBUG 0
38			#include "debug.h"
39
40
41			// Global variables
42			static int mouse_x = 0, mouse_y = 0; // Mouse position
43			static int old_mouse_x = 0, old_mouse_y = 0;
44			static bool mouse_button[3] = {false, false, false}; // Mouse button states
45			static bool old_mouse_button[3] = {false, false, false};
46			static bool relative_mouse = false;
47
48			static uint8 key_states[16]; // Key states (Mac keycodes)
49			#define MATRIX(code) (key_states[code >> 3] & (1 << (~code & 7)))
50
51			// Keyboard event buffer (Mac keycodes with up/down flag)
52			const int KEY_BUFFER_SIZE = 16;
53			static uint8 key_buffer[KEY_BUFFER_SIZE];
54			static unsigned int key_read_ptr = 0, key_write_ptr = 0;
55
56			static uint8 mouse_reg_3[2] = {0x63, 0x01}; // Mouse ADB register 3
57
58			static uint8 key_reg_2[2] = {0xff, 0xff}; // Keyboard ADB register 2
59			static uint8 key_reg_3[2] = {0x62, 0x05}; // Keyboard ADB register 3
60
61	nigel	1.10	static uint8 m_keyboard_type = 0x05;
62
63	cebix	1.7	// ADB mouse motion lock (for platforms that use separate input thread)
64	cebix	1.6	static B2_mutex *mouse_lock;
65
66
67			/*
68			* Initialize ADB emulation
69			*/
70
71			void ADBInit(void)
72			{
73			mouse_lock = B2_create_mutex();
74	nigel	1.10	m_keyboard_type = (uint8)PrefsFindInt32("keyboardtype");
75			key_reg_3[1] = m_keyboard_type;
76	cebix	1.6	}
77
78
79			/*
80			* Exit ADB emulation
81			*/
82
83			void ADBExit(void)
84			{
85			if (mouse_lock) {
86			B2_delete_mutex(mouse_lock);
87			mouse_lock = NULL;
88			}
89			}
90
91	cebix	1.1
92			/*
93			* ADBOp() replacement
94			*/
95
96			void ADBOp(uint8 op, uint8 *data)
97			{
98			D(bug("ADBOp op %02x, data %02x %02x %02x\n", op, data[0], data[1], data[2]));
99
100			// ADB reset?
101			if ((op & 0x0f) == 0) {
102			mouse_reg_3[0] = 0x63;
103			mouse_reg_3[1] = 0x01;
104			key_reg_2[0] = 0xff;
105			key_reg_2[1] = 0xff;
106			key_reg_3[0] = 0x62;
107	nigel	1.10	key_reg_3[1] = m_keyboard_type;
108	cebix	1.1	return;
109			}
110
111			// Cut op into fields
112			uint8 adr = op >> 4;
113			uint8 cmd = (op >> 2) & 3;
114			uint8 reg = op & 3;
115
116			// Check which device was addressed and act accordingly
117			if (adr == (mouse_reg_3[0] & 0x0f)) {
118
119			// Mouse
120			if (cmd == 2) {
121
122			// Listen
123			switch (reg) {
124			case 3: // Address/HandlerID
125			if (data[2] == 0xfe) // Change address
126			mouse_reg_3[0] = (mouse_reg_3[0] & 0xf0) \| (data[1] & 0x0f);
127			else if (data[2] == 1 \|\| data[2] == 2 \|\| data[2] == 4) // Change device handler ID
128			mouse_reg_3[1] = data[2];
129			else if (data[2] == 0x00) // Change address and enable bit
130			mouse_reg_3[0] = (mouse_reg_3[0] & 0xd0) \| (data[1] & 0x2f);
131			break;
132			}
133
134			} else if (cmd == 3) {
135
136			// Talk
137			switch (reg) {
138			case 1: // Extended mouse protocol
139			data[0] = 8;
140			data[1] = 'a'; // Identifier
141			data[2] = 'p';
142			data[3] = 'p';
143			data[4] = 'l';
144			data[5] = 300 >> 8; // Resolution (dpi)
145			data[6] = 300 & 0xff;
146			data[7] = 1; // Class (mouse)
147			data[8] = 3; // Number of buttons
148			break;
149			case 3: // Address/HandlerID
150			data[0] = 2;
151			data[1] = mouse_reg_3[0] & 0xf0 \| (rand() & 0x0f);
152			data[2] = mouse_reg_3[1];
153			break;
154			default:
155			data[0] = 0;
156			break;
157			}
158			}
159			D(bug(" mouse reg 3 %02x%02x\n", mouse_reg_3[0], mouse_reg_3[1]));
160
161			} else if (adr == (key_reg_3[0] & 0x0f)) {
162
163			// Keyboard
164			if (cmd == 2) {
165
166			// Listen
167			switch (reg) {
168			case 2: // LEDs/Modifiers
169			key_reg_2[0] = data[1];
170			key_reg_2[1] = data[2];
171			break;
172			case 3: // Address/HandlerID
173			if (data[2] == 0xfe) // Change address
174			key_reg_3[0] = (key_reg_3[0] & 0xf0) \| (data[1] & 0x0f);
175			else if (data[2] == 0x00) // Change address and enable bit
176			key_reg_3[0] = (key_reg_3[0] & 0xd0) \| (data[1] & 0x2f);
177			break;
178			}
179
180			} else if (cmd == 3) {
181
182			// Talk
183			switch (reg) {
184			case 2: { // LEDs/Modifiers
185			uint8 reg2hi = 0xff;
186			uint8 reg2lo = key_reg_2[1] \| 0xf8;
187			if (MATRIX(0x6b)) // Scroll Lock
188			reg2lo &= ~0x40;
189			if (MATRIX(0x47)) // Num Lock
190			reg2lo &= ~0x80;
191			if (MATRIX(0x37)) // Command
192			reg2hi &= ~0x01;
193			if (MATRIX(0x3a)) // Option
194			reg2hi &= ~0x02;
195			if (MATRIX(0x38)) // Shift
196			reg2hi &= ~0x04;
197			if (MATRIX(0x36)) // Control
198			reg2hi &= ~0x08;
199			if (MATRIX(0x39)) // Caps Lock
200			reg2hi &= ~0x20;
201			if (MATRIX(0x75)) // Delete
202			reg2hi &= ~0x40;
203			data[0] = 2;
204			data[1] = reg2hi;
205			data[2] = reg2lo;
206			break;
207			}
208			case 3: // Address/HandlerID
209			data[0] = 2;
210			data[1] = key_reg_3[0] & 0xf0 \| (rand() & 0x0f);
211			data[2] = key_reg_3[1];
212			break;
213			default:
214			data[0] = 0;
215			break;
216			}
217			}
218			D(bug(" keyboard reg 3 %02x%02x\n", key_reg_3[0], key_reg_3[1]));
219
220			} else // Unknown address
221			if (cmd == 3)
222			data[0] = 0; // Talk: 0 bytes of data
223			}
224
225
226			/*
227	cebix	1.4	* Mouse was moved (x/y are absolute or relative, depending on ADBSetRelMouseMode())
228	cebix	1.1	*/
229
230			void ADBMouseMoved(int x, int y)
231			{
232	cebix	1.6	B2_lock_mutex(mouse_lock);
233	cebix	1.1	if (relative_mouse) {
234			mouse_x += x; mouse_y += y;
235			} else {
236			mouse_x = x; mouse_y = y;
237			}
238	cebix	1.6	B2_unlock_mutex(mouse_lock);
239	cebix	1.7	SetInterruptFlag(INTFLAG_ADB);
240			TriggerInterrupt();
241	cebix	1.1	}
242
243
244			/*
245			* Mouse button pressed
246			*/
247
248			void ADBMouseDown(int button)
249			{
250			mouse_button[button] = true;
251	cebix	1.7	SetInterruptFlag(INTFLAG_ADB);
252			TriggerInterrupt();
253	cebix	1.1	}
254
255
256			/*
257	cebix	1.7	* Mouse button released
258	cebix	1.1	*/
259
260			void ADBMouseUp(int button)
261			{
262			mouse_button[button] = false;
263	cebix	1.7	SetInterruptFlag(INTFLAG_ADB);
264			TriggerInterrupt();
265	cebix	1.1	}
266
267
268			/*
269			* Set mouse mode (absolute or relative)
270			*/
271
272			void ADBSetRelMouseMode(bool relative)
273			{
274	cebix	1.7	if (relative_mouse != relative) {
275			relative_mouse = relative;
276			mouse_x = mouse_y = 0;
277			}
278	cebix	1.1	}
279
280
281			/*
282			* Key pressed ("code" is the Mac key code)
283			*/
284
285			void ADBKeyDown(int code)
286			{
287			// Add keycode to buffer
288			key_buffer[key_write_ptr] = code;
289			key_write_ptr = (key_write_ptr + 1) % KEY_BUFFER_SIZE;
290
291			// Set key in matrix
292			key_states[code >> 3] \|= (1 << (~code & 7));
293	cebix	1.7
294			// Trigger interrupt
295			SetInterruptFlag(INTFLAG_ADB);
296			TriggerInterrupt();
297	cebix	1.1	}
298
299
300			/*
301			* Key released ("code" is the Mac key code)
302			*/
303
304			void ADBKeyUp(int code)
305			{
306			// Add keycode to buffer
307			key_buffer[key_write_ptr] = code \| 0x80; // Key-up flag
308			key_write_ptr = (key_write_ptr + 1) % KEY_BUFFER_SIZE;
309
310			// Clear key in matrix
311			key_states[code >> 3] &= ~(1 << (~code & 7));
312	cebix	1.7
313			// Trigger interrupt
314			SetInterruptFlag(INTFLAG_ADB);
315			TriggerInterrupt();
316	cebix	1.1	}
317
318
319			/*
320			* ADB interrupt function (executed as part of 60Hz interrupt)
321			*/
322
323			void ADBInterrupt(void)
324			{
325			M68kRegisters r;
326
327			// Return if ADB is not initialized
328			uint32 adb_base = ReadMacInt32(0xcf8);
329			if (!adb_base \|\| adb_base == 0xffffffff)
330			return;
331			uint32 tmp_data = adb_base + 0x163; // Temporary storage for faked ADB data
332
333	cebix	1.6	// Get mouse state
334			B2_lock_mutex(mouse_lock);
335	cebix	1.1	int mx = mouse_x;
336			int my = mouse_y;
337	cebix	1.6	if (relative_mouse)
338			mouse_x = mouse_y = 0;
339			int mb[3] = {mouse_button[0], mouse_button[1], mouse_button[2]};
340			B2_unlock_mutex(mouse_lock);
341	cebix	1.1
342	cebix	1.4	uint32 key_base = adb_base + 4;
343			uint32 mouse_base = adb_base + 16;
344
345	cebix	1.1	if (relative_mouse) {
346
347			// Mouse movement (relative) and buttons
348	cebix	1.6	if (mx != 0 \|\| my != 0 \|\| mb[0] != old_mouse_button[0] \|\| mb[1] != old_mouse_button[1] \|\| mb[2] != old_mouse_button[2]) {
349	cebix	1.1
350			// Call mouse ADB handler
351			if (mouse_reg_3[1] == 4) {
352			// Extended mouse protocol
353	cebix	1.2	WriteMacInt8(tmp_data, 3);
354	cebix	1.6	WriteMacInt8(tmp_data + 1, (my & 0x7f) \| (mb[0] ? 0 : 0x80));
355			WriteMacInt8(tmp_data + 2, (mx & 0x7f) \| (mb[1] ? 0 : 0x80));
356			WriteMacInt8(tmp_data + 3, ((my >> 3) & 0x70) \| ((mx >> 7) & 0x07) \| (mb[2] ? 0x08 : 0x88));
357	cebix	1.1	} else {
358			// 100/200 dpi mode
359	cebix	1.2	WriteMacInt8(tmp_data, 2);
360	cebix	1.6	WriteMacInt8(tmp_data + 1, (my & 0x7f) \| (mb[0] ? 0 : 0x80));
361			WriteMacInt8(tmp_data + 2, (mx & 0x7f) \| (mb[1] ? 0 : 0x80));
362	cebix	1.1	}
363			r.a[0] = tmp_data;
364			r.a[1] = ReadMacInt32(mouse_base);
365			r.a[2] = ReadMacInt32(mouse_base + 4);
366			r.a[3] = adb_base;
367			r.d[0] = (mouse_reg_3[0] << 4) \| 0x0c; // Talk 0
368			Execute68k(r.a[1], &r);
369
370	cebix	1.6	old_mouse_button[0] = mb[0];
371			old_mouse_button[1] = mb[1];
372			old_mouse_button[2] = mb[2];
373	cebix	1.1	}
374
375			} else {
376
377			// Update mouse position (absolute)
378			if (mx != old_mouse_x \|\| my != old_mouse_y) {
379	cebix	1.4	#ifdef POWERPC_ROM
380	gbeauche	1.11	static const uint16 proc[] = {
381			PW(0x2f08), // move.l a0,-(sp)
382			PW(0x2f00), // move.l d0,-(sp)
383			PW(0x2f01), // move.l d1,-(sp)
384			PW(0x7001), // moveq #1,d0 (MoveTo)
385			PW(0xaadb), // CursorDeviceDispatch
386			PW(M68K_RTS)
387	cebix	1.4	};
388			r.a[0] = ReadMacInt32(mouse_base + 4);
389			r.d[0] = mx;
390			r.d[1] = my;
391			Execute68k((uint32)proc, &r);
392			#else
393	cebix	1.1	WriteMacInt16(0x82a, mx);
394			WriteMacInt16(0x828, my);
395			WriteMacInt16(0x82e, mx);
396			WriteMacInt16(0x82c, my);
397			WriteMacInt8(0x8ce, ReadMacInt8(0x8cf)); // CrsrCouple -> CrsrNew
398	cebix	1.4	#endif
399	cebix	1.1	old_mouse_x = mx;
400			old_mouse_y = my;
401			}
402
403			// Send mouse button events
404	cebix	1.6	if (mb[0] != old_mouse_button[0] \|\| mb[1] != old_mouse_button[1] \|\| mb[2] != old_mouse_button[2]) {
405	cebix	1.1	uint32 mouse_base = adb_base + 16;
406
407			// Call mouse ADB handler
408			if (mouse_reg_3[1] == 4) {
409			// Extended mouse protocol
410	cebix	1.2	WriteMacInt8(tmp_data, 3);
411	cebix	1.6	WriteMacInt8(tmp_data + 1, mb[0] ? 0 : 0x80);
412			WriteMacInt8(tmp_data + 2, mb[1] ? 0 : 0x80);
413			WriteMacInt8(tmp_data + 3, mb[2] ? 0x08 : 0x88);
414	cebix	1.1	} else {
415			// 100/200 dpi mode
416	cebix	1.2	WriteMacInt8(tmp_data, 2);
417	cebix	1.6	WriteMacInt8(tmp_data + 1, mb[0] ? 0 : 0x80);
418			WriteMacInt8(tmp_data + 2, mb[1] ? 0 : 0x80);
419	cebix	1.1	}
420			r.a[0] = tmp_data;
421			r.a[1] = ReadMacInt32(mouse_base);
422			r.a[2] = ReadMacInt32(mouse_base + 4);
423			r.a[3] = adb_base;
424			r.d[0] = (mouse_reg_3[0] << 4) \| 0x0c; // Talk 0
425			Execute68k(r.a[1], &r);
426
427	cebix	1.6	old_mouse_button[0] = mb[0];
428			old_mouse_button[1] = mb[1];
429			old_mouse_button[2] = mb[2];
430	cebix	1.1	}
431			}
432
433			// Process accumulated keyboard events
434			while (key_read_ptr != key_write_ptr) {
435
436			// Read keyboard event
437			uint8 mac_code = key_buffer[key_read_ptr];
438			key_read_ptr = (key_read_ptr + 1) % KEY_BUFFER_SIZE;
439
440			// Call keyboard ADB handler
441	cebix	1.2	WriteMacInt8(tmp_data, 2);
442			WriteMacInt8(tmp_data + 1, mac_code);
443			WriteMacInt8(tmp_data + 2, mac_code == 0x7f ? 0x7f : 0xff); // Power key is special
444	cebix	1.1	r.a[0] = tmp_data;
445			r.a[1] = ReadMacInt32(key_base);
446			r.a[2] = ReadMacInt32(key_base + 4);
447			r.a[3] = adb_base;
448			r.d[0] = (key_reg_3[0] << 4) \| 0x0c; // Talk 0
449			Execute68k(r.a[1], &r);
450			}
451
452			// Clear temporary data
453			WriteMacInt32(tmp_data, 0);
454			WriteMacInt32(tmp_data + 4, 0);
455			}