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delete SheepShaver/src/adb.cpp
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kanjitalk755
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@ -1,460 +0,0 @@
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/*
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* adb.cpp - ADB emulation (mouse/keyboard)
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*
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* Basilisk II (C) Christian Bauer
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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* SEE ALSO
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* Inside Macintosh: Devices, chapter 5 "ADB Manager"
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* Technote HW 01: "ADB - The Untold Story: Space Aliens Ate My Mouse"
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*/
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#include <stdlib.h>
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#include "sysdeps.h"
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#include "cpu_emulation.h"
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#include "emul_op.h"
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#include "main.h"
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#include "prefs.h"
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#include "video.h"
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#include "adb.h"
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#ifdef POWERPC_ROM
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#include "thunks.h"
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#endif
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#define DEBUG 0
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#include "debug.h"
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// Global variables
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static int mouse_x = 0, mouse_y = 0; // Mouse position
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static int old_mouse_x = 0, old_mouse_y = 0;
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static bool mouse_button[3] = {false, false, false}; // Mouse button states
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static bool old_mouse_button[3] = {false, false, false};
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static bool relative_mouse = false;
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static uint8 key_states[16]; // Key states (Mac keycodes)
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#define MATRIX(code) (key_states[code >> 3] & (1 << (~code & 7)))
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// Keyboard event buffer (Mac keycodes with up/down flag)
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const int KEY_BUFFER_SIZE = 16;
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static uint8 key_buffer[KEY_BUFFER_SIZE];
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static unsigned int key_read_ptr = 0, key_write_ptr = 0;
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static uint8 mouse_reg_3[2] = {0x63, 0x01}; // Mouse ADB register 3
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static uint8 key_reg_2[2] = {0xff, 0xff}; // Keyboard ADB register 2
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static uint8 key_reg_3[2] = {0x62, 0x05}; // Keyboard ADB register 3
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static uint8 m_keyboard_type = 0x05;
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// ADB mouse motion lock (for platforms that use separate input thread)
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static B2_mutex *mouse_lock;
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/*
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* Initialize ADB emulation
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*/
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void ADBInit(void)
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{
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mouse_lock = B2_create_mutex();
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m_keyboard_type = (uint8)PrefsFindInt32("keyboardtype");
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key_reg_3[1] = m_keyboard_type;
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}
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/*
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* Exit ADB emulation
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*/
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void ADBExit(void)
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{
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if (mouse_lock) {
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B2_delete_mutex(mouse_lock);
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mouse_lock = NULL;
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}
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}
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/*
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* ADBOp() replacement
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*/
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void ADBOp(uint8 op, uint8 *data)
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{
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D(bug("ADBOp op %02x, data %02x %02x %02x\n", op, data[0], data[1], data[2]));
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// ADB reset?
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if ((op & 0x0f) == 0) {
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mouse_reg_3[0] = 0x63;
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mouse_reg_3[1] = 0x01;
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key_reg_2[0] = 0xff;
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key_reg_2[1] = 0xff;
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key_reg_3[0] = 0x62;
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key_reg_3[1] = m_keyboard_type;
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return;
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}
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// Cut op into fields
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uint8 adr = op >> 4;
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uint8 cmd = (op >> 2) & 3;
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uint8 reg = op & 3;
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// Check which device was addressed and act accordingly
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if (adr == (mouse_reg_3[0] & 0x0f)) {
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// Mouse
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if (cmd == 2) {
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// Listen
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switch (reg) {
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case 3: // Address/HandlerID
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if (data[2] == 0xfe) // Change address
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mouse_reg_3[0] = (mouse_reg_3[0] & 0xf0) | (data[1] & 0x0f);
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else if (data[2] == 1 || data[2] == 2 || data[2] == 4) // Change device handler ID
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mouse_reg_3[1] = data[2];
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else if (data[2] == 0x00) // Change address and enable bit
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mouse_reg_3[0] = (mouse_reg_3[0] & 0xd0) | (data[1] & 0x2f);
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break;
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}
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} else if (cmd == 3) {
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// Talk
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switch (reg) {
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case 1: // Extended mouse protocol
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data[0] = 8;
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data[1] = 'a'; // Identifier
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data[2] = 'p';
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data[3] = 'p';
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data[4] = 'l';
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data[5] = 300 >> 8; // Resolution (dpi)
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data[6] = 300 & 0xff;
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data[7] = 1; // Class (mouse)
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data[8] = 3; // Number of buttons
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break;
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case 3: // Address/HandlerID
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data[0] = 2;
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data[1] = (mouse_reg_3[0] & 0xf0) | (rand() & 0x0f);
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data[2] = mouse_reg_3[1];
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break;
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default:
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data[0] = 0;
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break;
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}
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}
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D(bug(" mouse reg 3 %02x%02x\n", mouse_reg_3[0], mouse_reg_3[1]));
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} else if (adr == (key_reg_3[0] & 0x0f)) {
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// Keyboard
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if (cmd == 2) {
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// Listen
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switch (reg) {
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case 2: // LEDs/Modifiers
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key_reg_2[0] = data[1];
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key_reg_2[1] = data[2];
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break;
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case 3: // Address/HandlerID
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if (data[2] == 0xfe) // Change address
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key_reg_3[0] = (key_reg_3[0] & 0xf0) | (data[1] & 0x0f);
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else if (data[2] == 0x00) // Change address and enable bit
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key_reg_3[0] = (key_reg_3[0] & 0xd0) | (data[1] & 0x2f);
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break;
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}
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} else if (cmd == 3) {
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// Talk
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switch (reg) {
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case 2: { // LEDs/Modifiers
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uint8 reg2hi = 0xff;
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uint8 reg2lo = key_reg_2[1] | 0xf8;
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if (MATRIX(0x6b)) // Scroll Lock
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reg2lo &= ~0x40;
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if (MATRIX(0x47)) // Num Lock
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reg2lo &= ~0x80;
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if (MATRIX(0x37)) // Command
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reg2hi &= ~0x01;
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if (MATRIX(0x3a)) // Option
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reg2hi &= ~0x02;
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if (MATRIX(0x38)) // Shift
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reg2hi &= ~0x04;
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if (MATRIX(0x36)) // Control
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reg2hi &= ~0x08;
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if (MATRIX(0x39)) // Caps Lock
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reg2hi &= ~0x20;
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if (MATRIX(0x75)) // Delete
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reg2hi &= ~0x40;
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data[0] = 2;
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data[1] = reg2hi;
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data[2] = reg2lo;
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break;
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}
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case 3: // Address/HandlerID
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data[0] = 2;
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data[1] = (key_reg_3[0] & 0xf0) | (rand() & 0x0f);
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data[2] = key_reg_3[1];
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break;
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default:
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data[0] = 0;
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break;
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}
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}
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D(bug(" keyboard reg 3 %02x%02x\n", key_reg_3[0], key_reg_3[1]));
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} else // Unknown address
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if (cmd == 3)
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data[0] = 0; // Talk: 0 bytes of data
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}
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/*
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* Mouse was moved (x/y are absolute or relative, depending on ADBSetRelMouseMode())
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*/
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void ADBMouseMoved(int x, int y)
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{
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B2_lock_mutex(mouse_lock);
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if (relative_mouse) {
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mouse_x += x; mouse_y += y;
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} else {
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mouse_x = x; mouse_y = y;
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}
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B2_unlock_mutex(mouse_lock);
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SetInterruptFlag(INTFLAG_ADB);
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TriggerInterrupt();
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}
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/*
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* Mouse button pressed
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*/
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void ADBMouseDown(int button)
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{
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mouse_button[button] = true;
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SetInterruptFlag(INTFLAG_ADB);
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TriggerInterrupt();
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}
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/*
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* Mouse button released
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*/
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void ADBMouseUp(int button)
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{
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mouse_button[button] = false;
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SetInterruptFlag(INTFLAG_ADB);
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TriggerInterrupt();
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}
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/*
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* Set mouse mode (absolute or relative)
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*/
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void ADBSetRelMouseMode(bool relative)
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{
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if (relative_mouse != relative) {
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relative_mouse = relative;
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mouse_x = mouse_y = 0;
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}
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}
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/*
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* Key pressed ("code" is the Mac key code)
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*/
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void ADBKeyDown(int code)
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{
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// Add keycode to buffer
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key_buffer[key_write_ptr] = code;
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key_write_ptr = (key_write_ptr + 1) % KEY_BUFFER_SIZE;
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// Set key in matrix
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key_states[code >> 3] |= (1 << (~code & 7));
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// Trigger interrupt
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SetInterruptFlag(INTFLAG_ADB);
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TriggerInterrupt();
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}
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/*
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* Key released ("code" is the Mac key code)
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*/
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void ADBKeyUp(int code)
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{
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// Add keycode to buffer
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key_buffer[key_write_ptr] = code | 0x80; // Key-up flag
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key_write_ptr = (key_write_ptr + 1) % KEY_BUFFER_SIZE;
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// Clear key in matrix
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key_states[code >> 3] &= ~(1 << (~code & 7));
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// Trigger interrupt
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SetInterruptFlag(INTFLAG_ADB);
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TriggerInterrupt();
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}
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/*
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* ADB interrupt function (executed as part of 60Hz interrupt)
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*/
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void ADBInterrupt(void)
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{
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M68kRegisters r;
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// Return if ADB is not initialized
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uint32 adb_base = ReadMacInt32(0xcf8);
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if (!adb_base || adb_base == 0xffffffff)
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return;
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uint32 tmp_data = adb_base + 0x163; // Temporary storage for faked ADB data
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// Get mouse state
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B2_lock_mutex(mouse_lock);
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int mx = mouse_x;
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int my = mouse_y;
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if (relative_mouse)
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mouse_x = mouse_y = 0;
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bool mb[3] = {mouse_button[0], mouse_button[1], mouse_button[2]};
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B2_unlock_mutex(mouse_lock);
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uint32 key_base = adb_base + 4;
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uint32 mouse_base = adb_base + 16;
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if (relative_mouse) {
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// Mouse movement (relative) and buttons
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if (mx != 0 || my != 0 || mb[0] != old_mouse_button[0] || mb[1] != old_mouse_button[1] || mb[2] != old_mouse_button[2]) {
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// Call mouse ADB handler
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if (mouse_reg_3[1] == 4) {
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// Extended mouse protocol
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WriteMacInt8(tmp_data, 3);
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WriteMacInt8(tmp_data + 1, (my & 0x7f) | (mb[0] ? 0 : 0x80));
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WriteMacInt8(tmp_data + 2, (mx & 0x7f) | (mb[1] ? 0 : 0x80));
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WriteMacInt8(tmp_data + 3, ((my >> 3) & 0x70) | ((mx >> 7) & 0x07) | (mb[2] ? 0x08 : 0x88));
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} else {
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// 100/200 dpi mode
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WriteMacInt8(tmp_data, 2);
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WriteMacInt8(tmp_data + 1, (my & 0x7f) | (mb[0] ? 0 : 0x80));
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WriteMacInt8(tmp_data + 2, (mx & 0x7f) | (mb[1] ? 0 : 0x80));
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}
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r.a[0] = tmp_data;
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r.a[1] = ReadMacInt32(mouse_base);
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r.a[2] = ReadMacInt32(mouse_base + 4);
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r.a[3] = adb_base;
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r.d[0] = (mouse_reg_3[0] << 4) | 0x0c; // Talk 0
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Execute68k(r.a[1], &r);
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old_mouse_button[0] = mb[0];
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old_mouse_button[1] = mb[1];
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old_mouse_button[2] = mb[2];
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}
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} else {
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// Update mouse position (absolute)
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if (mx != old_mouse_x || my != old_mouse_y) {
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#ifdef POWERPC_ROM
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static const uint8 proc_template[] = {
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0x2f, 0x08, // move.l a0,-(sp)
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0x2f, 0x00, // move.l d0,-(sp)
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0x2f, 0x01, // move.l d1,-(sp)
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0x70, 0x01, // moveq #1,d0 (MoveTo)
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0xaa, 0xdb, // CursorDeviceDispatch
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M68K_RTS >> 8, M68K_RTS & 0xff
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};
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BUILD_SHEEPSHAVER_PROCEDURE(proc);
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r.a[0] = ReadMacInt32(mouse_base + 4);
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r.d[0] = mx;
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r.d[1] = my;
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Execute68k(proc, &r);
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#else
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WriteMacInt16(0x82a, mx);
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WriteMacInt16(0x828, my);
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WriteMacInt16(0x82e, mx);
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WriteMacInt16(0x82c, my);
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WriteMacInt8(0x8ce, ReadMacInt8(0x8cf)); // CrsrCouple -> CrsrNew
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#endif
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old_mouse_x = mx;
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old_mouse_y = my;
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}
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// Send mouse button events
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if (mb[0] != old_mouse_button[0] || mb[1] != old_mouse_button[1] || mb[2] != old_mouse_button[2]) {
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uint32 mouse_base = adb_base + 16;
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// Call mouse ADB handler
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if (mouse_reg_3[1] == 4) {
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// Extended mouse protocol
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WriteMacInt8(tmp_data, 3);
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WriteMacInt8(tmp_data + 1, mb[0] ? 0 : 0x80);
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WriteMacInt8(tmp_data + 2, mb[1] ? 0 : 0x80);
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WriteMacInt8(tmp_data + 3, mb[2] ? 0x08 : 0x88);
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} else {
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// 100/200 dpi mode
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WriteMacInt8(tmp_data, 2);
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WriteMacInt8(tmp_data + 1, mb[0] ? 0 : 0x80);
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WriteMacInt8(tmp_data + 2, mb[1] ? 0 : 0x80);
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}
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r.a[0] = tmp_data;
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r.a[1] = ReadMacInt32(mouse_base);
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r.a[2] = ReadMacInt32(mouse_base + 4);
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r.a[3] = adb_base;
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r.d[0] = (mouse_reg_3[0] << 4) | 0x0c; // Talk 0
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Execute68k(r.a[1], &r);
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old_mouse_button[0] = mb[0];
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old_mouse_button[1] = mb[1];
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old_mouse_button[2] = mb[2];
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}
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}
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// Process accumulated keyboard events
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while (key_read_ptr != key_write_ptr) {
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// Read keyboard event
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uint8 mac_code = key_buffer[key_read_ptr];
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key_read_ptr = (key_read_ptr + 1) % KEY_BUFFER_SIZE;
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// Call keyboard ADB handler
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WriteMacInt8(tmp_data, 2);
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WriteMacInt8(tmp_data + 1, mac_code);
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WriteMacInt8(tmp_data + 2, mac_code == 0x7f ? 0x7f : 0xff); // Power key is special
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r.a[0] = tmp_data;
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r.a[1] = ReadMacInt32(key_base);
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r.a[2] = ReadMacInt32(key_base + 4);
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r.a[3] = adb_base;
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r.d[0] = (key_reg_3[0] << 4) | 0x0c; // Talk 0
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Execute68k(r.a[1], &r);
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}
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// Clear temporary data
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WriteMacInt32(tmp_data, 0);
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WriteMacInt32(tmp_data + 4, 0);
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}
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