BasiliskII/src/adb.cpp

/*
 *  adb.cpp - ADB emulation (mouse/keyboard)
 *
 *  Basilisk II (C) 1997-2004 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"

#ifdef POWERPC_ROM
#include "thunks.h"
#endif

#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 uint8 proc_template[] = {
                                0x2f, 0x08,             // move.l a0,-(sp)
                                0x2f, 0x00,             // move.l d0,-(sp)
                                0x2f, 0x01,             // move.l d1,-(sp)
                                0x70, 0x01,             // moveq #1,d0 (MoveTo)
                                0xaa, 0xdb,             // CursorDeviceDispatch
                                M68K_RTS >> 8, M68K_RTS
                        };
                        BUILD_SHEEPSHAVER_PROCEDURE(proc);
                        r.a[0] = ReadMacInt32(mouse_base + 4);
                        r.d[0] = mx;
                        r.d[1] = my;
                        Execute68k(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:	1.14
Committed:	2004-11-22T22:42:55Z (20 years ago) by gbeauche
Branch:	MAIN
Changes since 1.13:	+13 -8 lines
Log Message:	Generate CursorDeviceDispatch() call onto the SheepShaver Procedures region
#	User	Rev	Content
1	cebix	1.1	/*
2			* adb.cpp - ADB emulation (mouse/keyboard)
3			*
4	cebix	1.12	* Basilisk II (C) 1997-2004 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	gbeauche	1.14	#ifdef POWERPC_ROM
38			#include "thunks.h"
39			#endif
40
41	cebix	1.1	#define DEBUG 0
42			#include "debug.h"
43
44
45			// Global variables
46			static int mouse_x = 0, mouse_y = 0; // Mouse position
47			static int old_mouse_x = 0, old_mouse_y = 0;
48			static bool mouse_button[3] = {false, false, false}; // Mouse button states
49			static bool old_mouse_button[3] = {false, false, false};
50			static bool relative_mouse = false;
51
52			static uint8 key_states[16]; // Key states (Mac keycodes)
53			#define MATRIX(code) (key_states[code >> 3] & (1 << (~code & 7)))
54
55			// Keyboard event buffer (Mac keycodes with up/down flag)
56			const int KEY_BUFFER_SIZE = 16;
57			static uint8 key_buffer[KEY_BUFFER_SIZE];
58			static unsigned int key_read_ptr = 0, key_write_ptr = 0;
59
60			static uint8 mouse_reg_3[2] = {0x63, 0x01}; // Mouse ADB register 3
61
62			static uint8 key_reg_2[2] = {0xff, 0xff}; // Keyboard ADB register 2
63			static uint8 key_reg_3[2] = {0x62, 0x05}; // Keyboard ADB register 3
64
65	nigel	1.10	static uint8 m_keyboard_type = 0x05;
66
67	cebix	1.7	// ADB mouse motion lock (for platforms that use separate input thread)
68	cebix	1.6	static B2_mutex *mouse_lock;
69
70
71			/*
72			* Initialize ADB emulation
73			*/
74
75			void ADBInit(void)
76			{
77			mouse_lock = B2_create_mutex();
78	nigel	1.10	m_keyboard_type = (uint8)PrefsFindInt32("keyboardtype");
79			key_reg_3[1] = m_keyboard_type;
80	cebix	1.6	}
81
82
83			/*
84			* Exit ADB emulation
85			*/
86
87			void ADBExit(void)
88			{
89			if (mouse_lock) {
90			B2_delete_mutex(mouse_lock);
91			mouse_lock = NULL;
92			}
93			}
94
95	cebix	1.1
96			/*
97			* ADBOp() replacement
98			*/
99
100			void ADBOp(uint8 op, uint8 *data)
101			{
102			D(bug("ADBOp op %02x, data %02x %02x %02x\n", op, data[0], data[1], data[2]));
103
104			// ADB reset?
105			if ((op & 0x0f) == 0) {
106			mouse_reg_3[0] = 0x63;
107			mouse_reg_3[1] = 0x01;
108			key_reg_2[0] = 0xff;
109			key_reg_2[1] = 0xff;
110			key_reg_3[0] = 0x62;
111	nigel	1.10	key_reg_3[1] = m_keyboard_type;
112	cebix	1.1	return;
113			}
114
115			// Cut op into fields
116			uint8 adr = op >> 4;
117			uint8 cmd = (op >> 2) & 3;
118			uint8 reg = op & 3;
119
120			// Check which device was addressed and act accordingly
121			if (adr == (mouse_reg_3[0] & 0x0f)) {
122
123			// Mouse
124			if (cmd == 2) {
125
126			// Listen
127			switch (reg) {
128			case 3: // Address/HandlerID
129			if (data[2] == 0xfe) // Change address
130			mouse_reg_3[0] = (mouse_reg_3[0] & 0xf0) \| (data[1] & 0x0f);
131			else if (data[2] == 1 \|\| data[2] == 2 \|\| data[2] == 4) // Change device handler ID
132			mouse_reg_3[1] = data[2];
133			else if (data[2] == 0x00) // Change address and enable bit
134			mouse_reg_3[0] = (mouse_reg_3[0] & 0xd0) \| (data[1] & 0x2f);
135			break;
136			}
137
138			} else if (cmd == 3) {
139
140			// Talk
141			switch (reg) {
142			case 1: // Extended mouse protocol
143			data[0] = 8;
144			data[1] = 'a'; // Identifier
145			data[2] = 'p';
146			data[3] = 'p';
147			data[4] = 'l';
148			data[5] = 300 >> 8; // Resolution (dpi)
149			data[6] = 300 & 0xff;
150			data[7] = 1; // Class (mouse)
151			data[8] = 3; // Number of buttons
152			break;
153			case 3: // Address/HandlerID
154			data[0] = 2;
155			data[1] = mouse_reg_3[0] & 0xf0 \| (rand() & 0x0f);
156			data[2] = mouse_reg_3[1];
157			break;
158			default:
159			data[0] = 0;
160			break;
161			}
162			}
163			D(bug(" mouse reg 3 %02x%02x\n", mouse_reg_3[0], mouse_reg_3[1]));
164
165			} else if (adr == (key_reg_3[0] & 0x0f)) {
166
167			// Keyboard
168			if (cmd == 2) {
169
170			// Listen
171			switch (reg) {
172			case 2: // LEDs/Modifiers
173			key_reg_2[0] = data[1];
174			key_reg_2[1] = data[2];
175			break;
176			case 3: // Address/HandlerID
177			if (data[2] == 0xfe) // Change address
178			key_reg_3[0] = (key_reg_3[0] & 0xf0) \| (data[1] & 0x0f);
179			else if (data[2] == 0x00) // Change address and enable bit
180			key_reg_3[0] = (key_reg_3[0] & 0xd0) \| (data[1] & 0x2f);
181			break;
182			}
183
184			} else if (cmd == 3) {
185
186			// Talk
187			switch (reg) {
188			case 2: { // LEDs/Modifiers
189			uint8 reg2hi = 0xff;
190			uint8 reg2lo = key_reg_2[1] \| 0xf8;
191			if (MATRIX(0x6b)) // Scroll Lock
192			reg2lo &= ~0x40;
193			if (MATRIX(0x47)) // Num Lock
194			reg2lo &= ~0x80;
195			if (MATRIX(0x37)) // Command
196			reg2hi &= ~0x01;
197			if (MATRIX(0x3a)) // Option
198			reg2hi &= ~0x02;
199			if (MATRIX(0x38)) // Shift
200			reg2hi &= ~0x04;
201			if (MATRIX(0x36)) // Control
202			reg2hi &= ~0x08;
203			if (MATRIX(0x39)) // Caps Lock
204			reg2hi &= ~0x20;
205			if (MATRIX(0x75)) // Delete
206			reg2hi &= ~0x40;
207			data[0] = 2;
208			data[1] = reg2hi;
209			data[2] = reg2lo;
210			break;
211			}
212			case 3: // Address/HandlerID
213			data[0] = 2;
214			data[1] = key_reg_3[0] & 0xf0 \| (rand() & 0x0f);
215			data[2] = key_reg_3[1];
216			break;
217			default:
218			data[0] = 0;
219			break;
220			}
221			}
222			D(bug(" keyboard reg 3 %02x%02x\n", key_reg_3[0], key_reg_3[1]));
223
224			} else // Unknown address
225			if (cmd == 3)
226			data[0] = 0; // Talk: 0 bytes of data
227			}
228
229
230			/*
231	cebix	1.4	* Mouse was moved (x/y are absolute or relative, depending on ADBSetRelMouseMode())
232	cebix	1.1	*/
233
234			void ADBMouseMoved(int x, int y)
235			{
236	cebix	1.6	B2_lock_mutex(mouse_lock);
237	cebix	1.1	if (relative_mouse) {
238			mouse_x += x; mouse_y += y;
239			} else {
240			mouse_x = x; mouse_y = y;
241			}
242	cebix	1.6	B2_unlock_mutex(mouse_lock);
243	cebix	1.7	SetInterruptFlag(INTFLAG_ADB);
244			TriggerInterrupt();
245	cebix	1.1	}
246
247
248			/*
249			* Mouse button pressed
250			*/
251
252			void ADBMouseDown(int button)
253			{
254			mouse_button[button] = true;
255	cebix	1.7	SetInterruptFlag(INTFLAG_ADB);
256			TriggerInterrupt();
257	cebix	1.1	}
258
259
260			/*
261	cebix	1.7	* Mouse button released
262	cebix	1.1	*/
263
264			void ADBMouseUp(int button)
265			{
266			mouse_button[button] = false;
267	cebix	1.7	SetInterruptFlag(INTFLAG_ADB);
268			TriggerInterrupt();
269	cebix	1.1	}
270
271
272			/*
273			* Set mouse mode (absolute or relative)
274			*/
275
276			void ADBSetRelMouseMode(bool relative)
277			{
278	cebix	1.7	if (relative_mouse != relative) {
279			relative_mouse = relative;
280			mouse_x = mouse_y = 0;
281			}
282	cebix	1.1	}
283
284
285			/*
286			* Key pressed ("code" is the Mac key code)
287			*/
288
289			void ADBKeyDown(int code)
290			{
291			// Add keycode to buffer
292			key_buffer[key_write_ptr] = code;
293			key_write_ptr = (key_write_ptr + 1) % KEY_BUFFER_SIZE;
294
295			// Set key in matrix
296			key_states[code >> 3] \|= (1 << (~code & 7));
297	cebix	1.7
298			// Trigger interrupt
299			SetInterruptFlag(INTFLAG_ADB);
300			TriggerInterrupt();
301	cebix	1.1	}
302
303
304			/*
305			* Key released ("code" is the Mac key code)
306			*/
307
308			void ADBKeyUp(int code)
309			{
310			// Add keycode to buffer
311			key_buffer[key_write_ptr] = code \| 0x80; // Key-up flag
312			key_write_ptr = (key_write_ptr + 1) % KEY_BUFFER_SIZE;
313
314			// Clear key in matrix
315			key_states[code >> 3] &= ~(1 << (~code & 7));
316	cebix	1.7
317			// Trigger interrupt
318			SetInterruptFlag(INTFLAG_ADB);
319			TriggerInterrupt();
320	cebix	1.1	}
321
322
323			/*
324			* ADB interrupt function (executed as part of 60Hz interrupt)
325			*/
326
327			void ADBInterrupt(void)
328			{
329			M68kRegisters r;
330
331			// Return if ADB is not initialized
332			uint32 adb_base = ReadMacInt32(0xcf8);
333			if (!adb_base \|\| adb_base == 0xffffffff)
334			return;
335			uint32 tmp_data = adb_base + 0x163; // Temporary storage for faked ADB data
336
337	cebix	1.6	// Get mouse state
338			B2_lock_mutex(mouse_lock);
339	cebix	1.1	int mx = mouse_x;
340			int my = mouse_y;
341	cebix	1.6	if (relative_mouse)
342			mouse_x = mouse_y = 0;
343			int mb[3] = {mouse_button[0], mouse_button[1], mouse_button[2]};
344			B2_unlock_mutex(mouse_lock);
345	cebix	1.1
346	cebix	1.4	uint32 key_base = adb_base + 4;
347			uint32 mouse_base = adb_base + 16;
348
349	cebix	1.1	if (relative_mouse) {
350
351			// Mouse movement (relative) and buttons
352	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]) {
353	cebix	1.1
354			// Call mouse ADB handler
355			if (mouse_reg_3[1] == 4) {
356			// Extended mouse protocol
357	cebix	1.2	WriteMacInt8(tmp_data, 3);
358	cebix	1.6	WriteMacInt8(tmp_data + 1, (my & 0x7f) \| (mb[0] ? 0 : 0x80));
359			WriteMacInt8(tmp_data + 2, (mx & 0x7f) \| (mb[1] ? 0 : 0x80));
360			WriteMacInt8(tmp_data + 3, ((my >> 3) & 0x70) \| ((mx >> 7) & 0x07) \| (mb[2] ? 0x08 : 0x88));
361	cebix	1.1	} else {
362			// 100/200 dpi mode
363	cebix	1.2	WriteMacInt8(tmp_data, 2);
364	cebix	1.6	WriteMacInt8(tmp_data + 1, (my & 0x7f) \| (mb[0] ? 0 : 0x80));
365			WriteMacInt8(tmp_data + 2, (mx & 0x7f) \| (mb[1] ? 0 : 0x80));
366	cebix	1.1	}
367			r.a[0] = tmp_data;
368			r.a[1] = ReadMacInt32(mouse_base);
369			r.a[2] = ReadMacInt32(mouse_base + 4);
370			r.a[3] = adb_base;
371			r.d[0] = (mouse_reg_3[0] << 4) \| 0x0c; // Talk 0
372			Execute68k(r.a[1], &r);
373
374	cebix	1.6	old_mouse_button[0] = mb[0];
375			old_mouse_button[1] = mb[1];
376			old_mouse_button[2] = mb[2];
377	cebix	1.1	}
378
379			} else {
380
381			// Update mouse position (absolute)
382			if (mx != old_mouse_x \|\| my != old_mouse_y) {
383	cebix	1.4	#ifdef POWERPC_ROM
384	gbeauche	1.14	static const uint8 proc_template[] = {
385			0x2f, 0x08, // move.l a0,-(sp)
386			0x2f, 0x00, // move.l d0,-(sp)
387			0x2f, 0x01, // move.l d1,-(sp)
388			0x70, 0x01, // moveq #1,d0 (MoveTo)
389			0xaa, 0xdb, // CursorDeviceDispatch
390			M68K_RTS >> 8, M68K_RTS
391	cebix	1.4	};
392	gbeauche	1.14	BUILD_SHEEPSHAVER_PROCEDURE(proc);
393	cebix	1.4	r.a[0] = ReadMacInt32(mouse_base + 4);
394			r.d[0] = mx;
395			r.d[1] = my;
396	gbeauche	1.14	Execute68k(proc, &r);
397	cebix	1.4	#else
398	cebix	1.1	WriteMacInt16(0x82a, mx);
399			WriteMacInt16(0x828, my);
400			WriteMacInt16(0x82e, mx);
401			WriteMacInt16(0x82c, my);
402			WriteMacInt8(0x8ce, ReadMacInt8(0x8cf)); // CrsrCouple -> CrsrNew
403	cebix	1.4	#endif
404	cebix	1.1	old_mouse_x = mx;
405			old_mouse_y = my;
406			}
407
408			// Send mouse button events
409	cebix	1.6	if (mb[0] != old_mouse_button[0] \|\| mb[1] != old_mouse_button[1] \|\| mb[2] != old_mouse_button[2]) {
410	cebix	1.1	uint32 mouse_base = adb_base + 16;
411
412			// Call mouse ADB handler
413			if (mouse_reg_3[1] == 4) {
414			// Extended mouse protocol
415	cebix	1.2	WriteMacInt8(tmp_data, 3);
416	cebix	1.6	WriteMacInt8(tmp_data + 1, mb[0] ? 0 : 0x80);
417			WriteMacInt8(tmp_data + 2, mb[1] ? 0 : 0x80);
418			WriteMacInt8(tmp_data + 3, mb[2] ? 0x08 : 0x88);
419	cebix	1.1	} else {
420			// 100/200 dpi mode
421	cebix	1.2	WriteMacInt8(tmp_data, 2);
422	cebix	1.6	WriteMacInt8(tmp_data + 1, mb[0] ? 0 : 0x80);
423			WriteMacInt8(tmp_data + 2, mb[1] ? 0 : 0x80);
424	cebix	1.1	}
425			r.a[0] = tmp_data;
426			r.a[1] = ReadMacInt32(mouse_base);
427			r.a[2] = ReadMacInt32(mouse_base + 4);
428			r.a[3] = adb_base;
429			r.d[0] = (mouse_reg_3[0] << 4) \| 0x0c; // Talk 0
430			Execute68k(r.a[1], &r);
431
432	cebix	1.6	old_mouse_button[0] = mb[0];
433			old_mouse_button[1] = mb[1];
434			old_mouse_button[2] = mb[2];
435	cebix	1.1	}
436			}
437
438			// Process accumulated keyboard events
439			while (key_read_ptr != key_write_ptr) {
440
441			// Read keyboard event
442			uint8 mac_code = key_buffer[key_read_ptr];
443			key_read_ptr = (key_read_ptr + 1) % KEY_BUFFER_SIZE;
444
445			// Call keyboard ADB handler
446	cebix	1.2	WriteMacInt8(tmp_data, 2);
447			WriteMacInt8(tmp_data + 1, mac_code);
448			WriteMacInt8(tmp_data + 2, mac_code == 0x7f ? 0x7f : 0xff); // Power key is special
449	cebix	1.1	r.a[0] = tmp_data;
450			r.a[1] = ReadMacInt32(key_base);
451			r.a[2] = ReadMacInt32(key_base + 4);
452			r.a[3] = adb_base;
453			r.d[0] = (key_reg_3[0] << 4) \| 0x0c; // Talk 0
454			Execute68k(r.a[1], &r);
455			}
456
457			// Clear temporary data
458			WriteMacInt32(tmp_data, 0);
459			WriteMacInt32(tmp_data + 4, 0);
460			}