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 "emul_op.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 ADBSetRelMouseMode())
 */

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;

        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 || mouse_button[0] != old_mouse_button[0] || mouse_button[1] != old_mouse_button[1] || mouse_button[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) | (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) {
#ifdef POWERPC_ROM
                        static const uint16 proc[] = {
                                0x2f08,         // move.l a0,-(sp)
                                0x2f00,         // move.l d0,-(sp)
                                0x2f01,         // move.l d1,-(sp)
                                0x7001,         // moveq #1,d0 (MoveTo)
                                0xaadb,         // CursorDeviceDispatch
                                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 (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
        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:	1.4
Committed:	2000-07-25T11:13:24Z (24 years, 4 months ago) by cebix
Branch:	MAIN
Changes since 1.3:	+20 -3 lines
Log Message:	- minor cleanups
#	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	cebix	1.4	#include "emul_op.h"
33	cebix	1.1	#include "video.h"
34			#include "adb.h"
35
36			#define DEBUG 0
37			#include "debug.h"
38
39
40			// Global variables
41			static int mouse_x = 0, mouse_y = 0; // Mouse position
42			static int old_mouse_x = 0, old_mouse_y = 0;
43			static bool mouse_button[3] = {false, false, false}; // Mouse button states
44			static bool old_mouse_button[3] = {false, false, false};
45			static bool relative_mouse = false;
46
47			static uint8 key_states[16]; // Key states (Mac keycodes)
48			#define MATRIX(code) (key_states[code >> 3] & (1 << (~code & 7)))
49
50			// Keyboard event buffer (Mac keycodes with up/down flag)
51			const int KEY_BUFFER_SIZE = 16;
52			static uint8 key_buffer[KEY_BUFFER_SIZE];
53			static unsigned int key_read_ptr = 0, key_write_ptr = 0;
54
55			static uint8 mouse_reg_3[2] = {0x63, 0x01}; // Mouse ADB register 3
56
57			static uint8 key_reg_2[2] = {0xff, 0xff}; // Keyboard ADB register 2
58			static uint8 key_reg_3[2] = {0x62, 0x05}; // Keyboard ADB register 3
59
60
61			/*
62			* ADBOp() replacement
63			*/
64
65			void ADBOp(uint8 op, uint8 *data)
66			{
67			D(bug("ADBOp op %02x, data %02x %02x %02x\n", op, data[0], data[1], data[2]));
68
69			// ADB reset?
70			if ((op & 0x0f) == 0) {
71			mouse_reg_3[0] = 0x63;
72			mouse_reg_3[1] = 0x01;
73			key_reg_2[0] = 0xff;
74			key_reg_2[1] = 0xff;
75			key_reg_3[0] = 0x62;
76			key_reg_3[1] = 0x05;
77			return;
78			}
79
80			// Cut op into fields
81			uint8 adr = op >> 4;
82			uint8 cmd = (op >> 2) & 3;
83			uint8 reg = op & 3;
84
85			// Check which device was addressed and act accordingly
86			if (adr == (mouse_reg_3[0] & 0x0f)) {
87
88			// Mouse
89			if (cmd == 2) {
90
91			// Listen
92			switch (reg) {
93			case 3: // Address/HandlerID
94			if (data[2] == 0xfe) // Change address
95			mouse_reg_3[0] = (mouse_reg_3[0] & 0xf0) \| (data[1] & 0x0f);
96			else if (data[2] == 1 \|\| data[2] == 2 \|\| data[2] == 4) // Change device handler ID
97			mouse_reg_3[1] = data[2];
98			else if (data[2] == 0x00) // Change address and enable bit
99			mouse_reg_3[0] = (mouse_reg_3[0] & 0xd0) \| (data[1] & 0x2f);
100			break;
101			}
102
103			} else if (cmd == 3) {
104
105			// Talk
106			switch (reg) {
107			case 1: // Extended mouse protocol
108			data[0] = 8;
109			data[1] = 'a'; // Identifier
110			data[2] = 'p';
111			data[3] = 'p';
112			data[4] = 'l';
113			data[5] = 300 >> 8; // Resolution (dpi)
114			data[6] = 300 & 0xff;
115			data[7] = 1; // Class (mouse)
116			data[8] = 3; // Number of buttons
117			break;
118			case 3: // Address/HandlerID
119			data[0] = 2;
120			data[1] = mouse_reg_3[0] & 0xf0 \| (rand() & 0x0f);
121			data[2] = mouse_reg_3[1];
122			break;
123			default:
124			data[0] = 0;
125			break;
126			}
127			}
128			D(bug(" mouse reg 3 %02x%02x\n", mouse_reg_3[0], mouse_reg_3[1]));
129
130			} else if (adr == (key_reg_3[0] & 0x0f)) {
131
132			// Keyboard
133			if (cmd == 2) {
134
135			// Listen
136			switch (reg) {
137			case 2: // LEDs/Modifiers
138			key_reg_2[0] = data[1];
139			key_reg_2[1] = data[2];
140			break;
141			case 3: // Address/HandlerID
142			if (data[2] == 0xfe) // Change address
143			key_reg_3[0] = (key_reg_3[0] & 0xf0) \| (data[1] & 0x0f);
144			else if (data[2] == 0x00) // Change address and enable bit
145			key_reg_3[0] = (key_reg_3[0] & 0xd0) \| (data[1] & 0x2f);
146			break;
147			}
148
149			} else if (cmd == 3) {
150
151			// Talk
152			switch (reg) {
153			case 2: { // LEDs/Modifiers
154			uint8 reg2hi = 0xff;
155			uint8 reg2lo = key_reg_2[1] \| 0xf8;
156			if (MATRIX(0x6b)) // Scroll Lock
157			reg2lo &= ~0x40;
158			if (MATRIX(0x47)) // Num Lock
159			reg2lo &= ~0x80;
160			if (MATRIX(0x37)) // Command
161			reg2hi &= ~0x01;
162			if (MATRIX(0x3a)) // Option
163			reg2hi &= ~0x02;
164			if (MATRIX(0x38)) // Shift
165			reg2hi &= ~0x04;
166			if (MATRIX(0x36)) // Control
167			reg2hi &= ~0x08;
168			if (MATRIX(0x39)) // Caps Lock
169			reg2hi &= ~0x20;
170			if (MATRIX(0x75)) // Delete
171			reg2hi &= ~0x40;
172			data[0] = 2;
173			data[1] = reg2hi;
174			data[2] = reg2lo;
175			break;
176			}
177			case 3: // Address/HandlerID
178			data[0] = 2;
179			data[1] = key_reg_3[0] & 0xf0 \| (rand() & 0x0f);
180			data[2] = key_reg_3[1];
181			break;
182			default:
183			data[0] = 0;
184			break;
185			}
186			}
187			D(bug(" keyboard reg 3 %02x%02x\n", key_reg_3[0], key_reg_3[1]));
188
189			} else // Unknown address
190			if (cmd == 3)
191			data[0] = 0; // Talk: 0 bytes of data
192			}
193
194
195			/*
196	cebix	1.4	* Mouse was moved (x/y are absolute or relative, depending on ADBSetRelMouseMode())
197	cebix	1.1	*/
198
199			void ADBMouseMoved(int x, int y)
200			{
201			if (relative_mouse) {
202			mouse_x += x; mouse_y += y;
203			} else {
204			mouse_x = x; mouse_y = y;
205			}
206			}
207
208
209			/*
210			* Mouse button pressed
211			*/
212
213			void ADBMouseDown(int button)
214			{
215			mouse_button[button] = true;
216			}
217
218
219			/*
220			* First mouse button released
221			*/
222
223			void ADBMouseUp(int button)
224			{
225			mouse_button[button] = false;
226			}
227
228
229			/*
230			* Set mouse mode (absolute or relative)
231			*/
232
233			void ADBSetRelMouseMode(bool relative)
234			{
235			relative_mouse = relative;
236			}
237
238
239			/*
240			* Key pressed ("code" is the Mac key code)
241			*/
242
243			void ADBKeyDown(int code)
244			{
245			// Add keycode to buffer
246			key_buffer[key_write_ptr] = code;
247			key_write_ptr = (key_write_ptr + 1) % KEY_BUFFER_SIZE;
248
249			// Set key in matrix
250			key_states[code >> 3] \|= (1 << (~code & 7));
251			}
252
253
254			/*
255			* Key released ("code" is the Mac key code)
256			*/
257
258			void ADBKeyUp(int code)
259			{
260			// Add keycode to buffer
261			key_buffer[key_write_ptr] = code \| 0x80; // Key-up flag
262			key_write_ptr = (key_write_ptr + 1) % KEY_BUFFER_SIZE;
263
264			// Clear key in matrix
265			key_states[code >> 3] &= ~(1 << (~code & 7));
266			}
267
268
269			/*
270			* ADB interrupt function (executed as part of 60Hz interrupt)
271			*/
272
273			void ADBInterrupt(void)
274			{
275			M68kRegisters r;
276
277			// Return if ADB is not initialized
278			uint32 adb_base = ReadMacInt32(0xcf8);
279			if (!adb_base \|\| adb_base == 0xffffffff)
280			return;
281			uint32 tmp_data = adb_base + 0x163; // Temporary storage for faked ADB data
282
283			// Get position so that it won't change during processing
284			int mx = mouse_x;
285			int my = mouse_y;
286
287	cebix	1.4	uint32 key_base = adb_base + 4;
288			uint32 mouse_base = adb_base + 16;
289
290	cebix	1.1	if (relative_mouse) {
291
292			// Mouse movement (relative) and buttons
293			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]) {
294
295			// Call mouse ADB handler
296			if (mouse_reg_3[1] == 4) {
297			// Extended mouse protocol
298	cebix	1.2	WriteMacInt8(tmp_data, 3);
299			WriteMacInt8(tmp_data + 1, (my & 0x7f) \| (mouse_button[0] ? 0 : 0x80));
300			WriteMacInt8(tmp_data + 2, (mx & 0x7f) \| (mouse_button[1] ? 0 : 0x80));
301			WriteMacInt8(tmp_data + 3, ((my >> 3) & 0x70) \| ((mx >> 7) & 0x07) \| (mouse_button[2] ? 0x08 : 0x88));
302	cebix	1.1	} else {
303			// 100/200 dpi mode
304	cebix	1.2	WriteMacInt8(tmp_data, 2);
305			WriteMacInt8(tmp_data + 1, (my & 0x7f) \| (mouse_button[0] ? 0 : 0x80));
306			WriteMacInt8(tmp_data + 2, (mx & 0x7f) \| (mouse_button[1] ? 0 : 0x80));
307	cebix	1.1	}
308			r.a[0] = tmp_data;
309			r.a[1] = ReadMacInt32(mouse_base);
310			r.a[2] = ReadMacInt32(mouse_base + 4);
311			r.a[3] = adb_base;
312			r.d[0] = (mouse_reg_3[0] << 4) \| 0x0c; // Talk 0
313			Execute68k(r.a[1], &r);
314
315			mouse_x = mouse_y = 0;
316			old_mouse_button[0] = mouse_button[0];
317			old_mouse_button[1] = mouse_button[1];
318			old_mouse_button[2] = mouse_button[2];
319			}
320
321			} else {
322
323			// Update mouse position (absolute)
324			if (mx != old_mouse_x \|\| my != old_mouse_y) {
325	cebix	1.4	#ifdef POWERPC_ROM
326			static const uint16 proc[] = {
327			0x2f08, // move.l a0,-(sp)
328			0x2f00, // move.l d0,-(sp)
329			0x2f01, // move.l d1,-(sp)
330			0x7001, // moveq #1,d0 (MoveTo)
331			0xaadb, // CursorDeviceDispatch
332			M68K_RTS
333			};
334			r.a[0] = ReadMacInt32(mouse_base + 4);
335			r.d[0] = mx;
336			r.d[1] = my;
337			Execute68k((uint32)proc, &r);
338			#else
339	cebix	1.1	WriteMacInt16(0x82a, mx);
340			WriteMacInt16(0x828, my);
341			WriteMacInt16(0x82e, mx);
342			WriteMacInt16(0x82c, my);
343			WriteMacInt8(0x8ce, ReadMacInt8(0x8cf)); // CrsrCouple -> CrsrNew
344	cebix	1.4	#endif
345	cebix	1.1	old_mouse_x = mx;
346			old_mouse_y = my;
347			}
348
349			// Send mouse button events
350			if (mouse_button[0] != old_mouse_button[0]) {
351			uint32 mouse_base = adb_base + 16;
352
353			// Call mouse ADB handler
354			if (mouse_reg_3[1] == 4) {
355			// Extended mouse protocol
356	cebix	1.2	WriteMacInt8(tmp_data, 3);
357			WriteMacInt8(tmp_data + 1, mouse_button[0] ? 0 : 0x80);
358			WriteMacInt8(tmp_data + 2, mouse_button[1] ? 0 : 0x80);
359			WriteMacInt8(tmp_data + 3, mouse_button[2] ? 0x08 : 0x88);
360	cebix	1.1	} else {
361			// 100/200 dpi mode
362	cebix	1.2	WriteMacInt8(tmp_data, 2);
363			WriteMacInt8(tmp_data + 1, mouse_button[0] ? 0 : 0x80);
364			WriteMacInt8(tmp_data + 2, mouse_button[1] ? 0 : 0x80);
365	cebix	1.1	}
366			r.a[0] = tmp_data;
367			r.a[1] = ReadMacInt32(mouse_base);
368			r.a[2] = ReadMacInt32(mouse_base + 4);
369			r.a[3] = adb_base;
370			r.d[0] = (mouse_reg_3[0] << 4) \| 0x0c; // Talk 0
371			Execute68k(r.a[1], &r);
372
373			old_mouse_button[0] = mouse_button[0];
374			old_mouse_button[1] = mouse_button[1];
375			old_mouse_button[2] = mouse_button[2];
376			}
377			}
378
379			// Process accumulated keyboard events
380			while (key_read_ptr != key_write_ptr) {
381
382			// Read keyboard event
383			uint8 mac_code = key_buffer[key_read_ptr];
384			key_read_ptr = (key_read_ptr + 1) % KEY_BUFFER_SIZE;
385
386			// Call keyboard ADB handler
387	cebix	1.2	WriteMacInt8(tmp_data, 2);
388			WriteMacInt8(tmp_data + 1, mac_code);
389			WriteMacInt8(tmp_data + 2, mac_code == 0x7f ? 0x7f : 0xff); // Power key is special
390	cebix	1.1	r.a[0] = tmp_data;
391			r.a[1] = ReadMacInt32(key_base);
392			r.a[2] = ReadMacInt32(key_base + 4);
393			r.a[3] = adb_base;
394			r.d[0] = (key_reg_3[0] << 4) \| 0x0c; // Talk 0
395			Execute68k(r.a[1], &r);
396			}
397
398			// Clear temporary data
399			WriteMacInt32(tmp_data, 0);
400			WriteMacInt32(tmp_data + 4, 0);
401			}