BasiliskII/src/adb.cpp

/*
 *  adb.cpp - ADB emulation (mouse/keyboard)
 *
 *  Basilisk II (C) 1997-2000 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 "main.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


/*
 *  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] = 0x05;
                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 ADBSetMouseMode())
 */

void ADBMouseMoved(int x, int y)
{
        if (relative_mouse) {
                mouse_x += x; mouse_y += y;
        } else {
                mouse_x = x; mouse_y = y;
        }
}


/* 
 *  Mouse button pressed
 */

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


/*
 *  First mouse button released
 */

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


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

void ADBSetRelMouseMode(bool relative)
{
        relative_mouse = relative;
}


/*
 *  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));
}


/*
 *  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));
}


/*
 *  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 position so that it won't change during processing
        int mx = mouse_x;
        int my = mouse_y;

        if (relative_mouse) {

                // Mouse movement (relative) and buttons
                if (mx != 0 || my != 0 || mouse_button[0] != old_mouse_button[0] || mouse_button[1] != old_mouse_button[1] || mouse_button[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, (my & 0x7f) | (mouse_button[0] ? 0 : 0x80));
                                WriteMacInt8(tmp_data + 2, (mx & 0x7f) | (mouse_button[1] ? 0 : 0x80));
                                WriteMacInt8(tmp_data + 3, ((my >> 3) & 0x70) | ((mx >> 7) & 0x07) | (mouse_button[2] ? 0x08 : 0x88));
                        } else {
                                // 100/200 dpi mode
                                WriteMacInt8(tmp_data, 2);
                                WriteMacInt8(tmp_data + 1, (my & 0x7f) | (mouse_button[0] ? 0 : 0x80));
                                WriteMacInt8(tmp_data + 2, (mx & 0x7f) | (mouse_button[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);

                        mouse_x = mouse_y = 0;
                        old_mouse_button[0] = mouse_button[0];
                        old_mouse_button[1] = mouse_button[1];
                        old_mouse_button[2] = mouse_button[2];
                }

        } else {

                // Update mouse position (absolute)
                if (mx != old_mouse_x || my != old_mouse_y) {
                        WriteMacInt16(0x82a, mx);
                        WriteMacInt16(0x828, my);
                        WriteMacInt16(0x82e, mx);
                        WriteMacInt16(0x82c, my);
                        WriteMacInt8(0x8ce, ReadMacInt8(0x8cf));        // CrsrCouple -> CrsrNew
                        old_mouse_x = mx;
                        old_mouse_y = my;
                }

                // Send mouse button events
                if (mouse_button[0] != old_mouse_button[0]) {
                        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, mouse_button[0] ? 0 : 0x80);
                                WriteMacInt8(tmp_data + 2, mouse_button[1] ? 0 : 0x80);
                                WriteMacInt8(tmp_data + 3, mouse_button[2] ? 0x08 : 0x88);
                        } else {
                                // 100/200 dpi mode
                                WriteMacInt8(tmp_data, 2);
                                WriteMacInt8(tmp_data + 1, mouse_button[0] ? 0 : 0x80);
                                WriteMacInt8(tmp_data + 2, mouse_button[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] = mouse_button[0];
                        old_mouse_button[1] = mouse_button[1];
                        old_mouse_button[2] = mouse_button[2];
                }
        }

        // Process accumulated keyboard events
        uint32 key_base = adb_base + 4;
        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:	1.3
Committed:	2000-04-10T18:52:17Z (24 years, 7 months ago) by cebix
Branch:	MAIN
CVS Tags:	snapshot-13072000
Changes since 1.2:	+1 -1 lines
Log Message:	- updated copyright info: 1999->2000
#	User	Rev	Content
1	cebix	1.1	/*
2			* adb.cpp - ADB emulation (mouse/keyboard)
3			*
4	cebix	1.3	* Basilisk II (C) 1997-2000 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			#include "main.h"
32			#include "video.h"
33			#include "adb.h"
34
35			#define DEBUG 0
36			#include "debug.h"
37
38
39			// Global variables
40			static int mouse_x = 0, mouse_y = 0; // Mouse position
41			static int old_mouse_x = 0, old_mouse_y = 0;
42			static bool mouse_button[3] = {false, false, false}; // Mouse button states
43			static bool old_mouse_button[3] = {false, false, false};
44			static bool relative_mouse = false;
45
46			static uint8 key_states[16]; // Key states (Mac keycodes)
47			#define MATRIX(code) (key_states[code >> 3] & (1 << (~code & 7)))
48
49			// Keyboard event buffer (Mac keycodes with up/down flag)
50			const int KEY_BUFFER_SIZE = 16;
51			static uint8 key_buffer[KEY_BUFFER_SIZE];
52			static unsigned int key_read_ptr = 0, key_write_ptr = 0;
53
54			static uint8 mouse_reg_3[2] = {0x63, 0x01}; // Mouse ADB register 3
55
56			static uint8 key_reg_2[2] = {0xff, 0xff}; // Keyboard ADB register 2
57			static uint8 key_reg_3[2] = {0x62, 0x05}; // Keyboard ADB register 3
58
59
60			/*
61			* ADBOp() replacement
62			*/
63
64			void ADBOp(uint8 op, uint8 *data)
65			{
66			D(bug("ADBOp op %02x, data %02x %02x %02x\n", op, data[0], data[1], data[2]));
67
68			// ADB reset?
69			if ((op & 0x0f) == 0) {
70			mouse_reg_3[0] = 0x63;
71			mouse_reg_3[1] = 0x01;
72			key_reg_2[0] = 0xff;
73			key_reg_2[1] = 0xff;
74			key_reg_3[0] = 0x62;
75			key_reg_3[1] = 0x05;
76			return;
77			}
78
79			// Cut op into fields
80			uint8 adr = op >> 4;
81			uint8 cmd = (op >> 2) & 3;
82			uint8 reg = op & 3;
83
84			// Check which device was addressed and act accordingly
85			if (adr == (mouse_reg_3[0] & 0x0f)) {
86
87			// Mouse
88			if (cmd == 2) {
89
90			// Listen
91			switch (reg) {
92			case 3: // Address/HandlerID
93			if (data[2] == 0xfe) // Change address
94			mouse_reg_3[0] = (mouse_reg_3[0] & 0xf0) \| (data[1] & 0x0f);
95			else if (data[2] == 1 \|\| data[2] == 2 \|\| data[2] == 4) // Change device handler ID
96			mouse_reg_3[1] = data[2];
97			else if (data[2] == 0x00) // Change address and enable bit
98			mouse_reg_3[0] = (mouse_reg_3[0] & 0xd0) \| (data[1] & 0x2f);
99			break;
100			}
101
102			} else if (cmd == 3) {
103
104			// Talk
105			switch (reg) {
106			case 1: // Extended mouse protocol
107			data[0] = 8;
108			data[1] = 'a'; // Identifier
109			data[2] = 'p';
110			data[3] = 'p';
111			data[4] = 'l';
112			data[5] = 300 >> 8; // Resolution (dpi)
113			data[6] = 300 & 0xff;
114			data[7] = 1; // Class (mouse)
115			data[8] = 3; // Number of buttons
116			break;
117			case 3: // Address/HandlerID
118			data[0] = 2;
119			data[1] = mouse_reg_3[0] & 0xf0 \| (rand() & 0x0f);
120			data[2] = mouse_reg_3[1];
121			break;
122			default:
123			data[0] = 0;
124			break;
125			}
126			}
127			D(bug(" mouse reg 3 %02x%02x\n", mouse_reg_3[0], mouse_reg_3[1]));
128
129			} else if (adr == (key_reg_3[0] & 0x0f)) {
130
131			// Keyboard
132			if (cmd == 2) {
133
134			// Listen
135			switch (reg) {
136			case 2: // LEDs/Modifiers
137			key_reg_2[0] = data[1];
138			key_reg_2[1] = data[2];
139			break;
140			case 3: // Address/HandlerID
141			if (data[2] == 0xfe) // Change address
142			key_reg_3[0] = (key_reg_3[0] & 0xf0) \| (data[1] & 0x0f);
143			else if (data[2] == 0x00) // Change address and enable bit
144			key_reg_3[0] = (key_reg_3[0] & 0xd0) \| (data[1] & 0x2f);
145			break;
146			}
147
148			} else if (cmd == 3) {
149
150			// Talk
151			switch (reg) {
152			case 2: { // LEDs/Modifiers
153			uint8 reg2hi = 0xff;
154			uint8 reg2lo = key_reg_2[1] \| 0xf8;
155			if (MATRIX(0x6b)) // Scroll Lock
156			reg2lo &= ~0x40;
157			if (MATRIX(0x47)) // Num Lock
158			reg2lo &= ~0x80;
159			if (MATRIX(0x37)) // Command
160			reg2hi &= ~0x01;
161			if (MATRIX(0x3a)) // Option
162			reg2hi &= ~0x02;
163			if (MATRIX(0x38)) // Shift
164			reg2hi &= ~0x04;
165			if (MATRIX(0x36)) // Control
166			reg2hi &= ~0x08;
167			if (MATRIX(0x39)) // Caps Lock
168			reg2hi &= ~0x20;
169			if (MATRIX(0x75)) // Delete
170			reg2hi &= ~0x40;
171			data[0] = 2;
172			data[1] = reg2hi;
173			data[2] = reg2lo;
174			break;
175			}
176			case 3: // Address/HandlerID
177			data[0] = 2;
178			data[1] = key_reg_3[0] & 0xf0 \| (rand() & 0x0f);
179			data[2] = key_reg_3[1];
180			break;
181			default:
182			data[0] = 0;
183			break;
184			}
185			}
186			D(bug(" keyboard reg 3 %02x%02x\n", key_reg_3[0], key_reg_3[1]));
187
188			} else // Unknown address
189			if (cmd == 3)
190			data[0] = 0; // Talk: 0 bytes of data
191			}
192
193
194			/*
195			* Mouse was moved (x/y are absolute or relative, depending on ADBSetMouseMode())
196			*/
197
198			void ADBMouseMoved(int x, int y)
199			{
200			if (relative_mouse) {
201			mouse_x += x; mouse_y += y;
202			} else {
203			mouse_x = x; mouse_y = y;
204			}
205			}
206
207
208			/*
209			* Mouse button pressed
210			*/
211
212			void ADBMouseDown(int button)
213			{
214			mouse_button[button] = true;
215			}
216
217
218			/*
219			* First mouse button released
220			*/
221
222			void ADBMouseUp(int button)
223			{
224			mouse_button[button] = false;
225			}
226
227
228			/*
229			* Set mouse mode (absolute or relative)
230			*/
231
232			void ADBSetRelMouseMode(bool relative)
233			{
234			relative_mouse = relative;
235			}
236
237
238			/*
239			* Key pressed ("code" is the Mac key code)
240			*/
241
242			void ADBKeyDown(int code)
243			{
244			// Add keycode to buffer
245			key_buffer[key_write_ptr] = code;
246			key_write_ptr = (key_write_ptr + 1) % KEY_BUFFER_SIZE;
247
248			// Set key in matrix
249			key_states[code >> 3] \|= (1 << (~code & 7));
250			}
251
252
253			/*
254			* Key released ("code" is the Mac key code)
255			*/
256
257			void ADBKeyUp(int code)
258			{
259			// Add keycode to buffer
260			key_buffer[key_write_ptr] = code \| 0x80; // Key-up flag
261			key_write_ptr = (key_write_ptr + 1) % KEY_BUFFER_SIZE;
262
263			// Clear key in matrix
264			key_states[code >> 3] &= ~(1 << (~code & 7));
265			}
266
267
268			/*
269			* ADB interrupt function (executed as part of 60Hz interrupt)
270			*/
271
272			void ADBInterrupt(void)
273			{
274			M68kRegisters r;
275
276			// Return if ADB is not initialized
277			uint32 adb_base = ReadMacInt32(0xcf8);
278			if (!adb_base \|\| adb_base == 0xffffffff)
279			return;
280			uint32 tmp_data = adb_base + 0x163; // Temporary storage for faked ADB data
281
282			// Get position so that it won't change during processing
283			int mx = mouse_x;
284			int my = mouse_y;
285
286			if (relative_mouse) {
287
288			// Mouse movement (relative) and buttons
289			if (mx != 0 \|\| my != 0 \|\| mouse_button[0] != old_mouse_button[0] \|\| mouse_button[1] != old_mouse_button[1] \|\| mouse_button[2] != old_mouse_button[2]) {
290			uint32 mouse_base = adb_base + 16;
291
292			// Call mouse ADB handler
293			if (mouse_reg_3[1] == 4) {
294			// Extended mouse protocol
295	cebix	1.2	WriteMacInt8(tmp_data, 3);
296			WriteMacInt8(tmp_data + 1, (my & 0x7f) \| (mouse_button[0] ? 0 : 0x80));
297			WriteMacInt8(tmp_data + 2, (mx & 0x7f) \| (mouse_button[1] ? 0 : 0x80));
298			WriteMacInt8(tmp_data + 3, ((my >> 3) & 0x70) \| ((mx >> 7) & 0x07) \| (mouse_button[2] ? 0x08 : 0x88));
299	cebix	1.1	} else {
300			// 100/200 dpi mode
301	cebix	1.2	WriteMacInt8(tmp_data, 2);
302			WriteMacInt8(tmp_data + 1, (my & 0x7f) \| (mouse_button[0] ? 0 : 0x80));
303			WriteMacInt8(tmp_data + 2, (mx & 0x7f) \| (mouse_button[1] ? 0 : 0x80));
304	cebix	1.1	}
305			r.a[0] = tmp_data;
306			r.a[1] = ReadMacInt32(mouse_base);
307			r.a[2] = ReadMacInt32(mouse_base + 4);
308			r.a[3] = adb_base;
309			r.d[0] = (mouse_reg_3[0] << 4) \| 0x0c; // Talk 0
310			Execute68k(r.a[1], &r);
311
312			mouse_x = mouse_y = 0;
313			old_mouse_button[0] = mouse_button[0];
314			old_mouse_button[1] = mouse_button[1];
315			old_mouse_button[2] = mouse_button[2];
316			}
317
318			} else {
319
320			// Update mouse position (absolute)
321			if (mx != old_mouse_x \|\| my != old_mouse_y) {
322			WriteMacInt16(0x82a, mx);
323			WriteMacInt16(0x828, my);
324			WriteMacInt16(0x82e, mx);
325			WriteMacInt16(0x82c, my);
326			WriteMacInt8(0x8ce, ReadMacInt8(0x8cf)); // CrsrCouple -> CrsrNew
327			old_mouse_x = mx;
328			old_mouse_y = my;
329			}
330
331			// Send mouse button events
332			if (mouse_button[0] != old_mouse_button[0]) {
333			uint32 mouse_base = adb_base + 16;
334
335			// Call mouse ADB handler
336			if (mouse_reg_3[1] == 4) {
337			// Extended mouse protocol
338	cebix	1.2	WriteMacInt8(tmp_data, 3);
339			WriteMacInt8(tmp_data + 1, mouse_button[0] ? 0 : 0x80);
340			WriteMacInt8(tmp_data + 2, mouse_button[1] ? 0 : 0x80);
341			WriteMacInt8(tmp_data + 3, mouse_button[2] ? 0x08 : 0x88);
342	cebix	1.1	} else {
343			// 100/200 dpi mode
344	cebix	1.2	WriteMacInt8(tmp_data, 2);
345			WriteMacInt8(tmp_data + 1, mouse_button[0] ? 0 : 0x80);
346			WriteMacInt8(tmp_data + 2, mouse_button[1] ? 0 : 0x80);
347	cebix	1.1	}
348			r.a[0] = tmp_data;
349			r.a[1] = ReadMacInt32(mouse_base);
350			r.a[2] = ReadMacInt32(mouse_base + 4);
351			r.a[3] = adb_base;
352			r.d[0] = (mouse_reg_3[0] << 4) \| 0x0c; // Talk 0
353			Execute68k(r.a[1], &r);
354
355			old_mouse_button[0] = mouse_button[0];
356			old_mouse_button[1] = mouse_button[1];
357			old_mouse_button[2] = mouse_button[2];
358			}
359			}
360
361			// Process accumulated keyboard events
362			uint32 key_base = adb_base + 4;
363			while (key_read_ptr != key_write_ptr) {
364
365			// Read keyboard event
366			uint8 mac_code = key_buffer[key_read_ptr];
367			key_read_ptr = (key_read_ptr + 1) % KEY_BUFFER_SIZE;
368
369			// Call keyboard ADB handler
370	cebix	1.2	WriteMacInt8(tmp_data, 2);
371			WriteMacInt8(tmp_data + 1, mac_code);
372			WriteMacInt8(tmp_data + 2, mac_code == 0x7f ? 0x7f : 0xff); // Power key is special
373	cebix	1.1	r.a[0] = tmp_data;
374			r.a[1] = ReadMacInt32(key_base);
375			r.a[2] = ReadMacInt32(key_base + 4);
376			r.a[3] = adb_base;
377			r.d[0] = (key_reg_3[0] << 4) \| 0x0c; // Talk 0
378			Execute68k(r.a[1], &r);
379			}
380
381			// Clear temporary data
382			WriteMacInt32(tmp_data, 0);
383			WriteMacInt32(tmp_data + 4, 0);
384			}