| 1 |
cebix |
1.1 |
/* |
| 2 |
|
|
* emul_op.cpp - 68k opcodes for ROM patches |
| 3 |
|
|
* |
| 4 |
cebix |
1.28 |
* Basilisk II (C) 1997-2002 Christian Bauer |
| 5 |
cebix |
1.1 |
* |
| 6 |
|
|
* This program is free software; you can redistribute it and/or modify |
| 7 |
|
|
* it under the terms of the GNU General Public License as published by |
| 8 |
|
|
* the Free Software Foundation; either version 2 of the License, or |
| 9 |
|
|
* (at your option) any later version. |
| 10 |
|
|
* |
| 11 |
|
|
* This program is distributed in the hope that it will be useful, |
| 12 |
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 |
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 |
|
|
* GNU General Public License for more details. |
| 15 |
|
|
* |
| 16 |
|
|
* You should have received a copy of the GNU General Public License |
| 17 |
|
|
* along with this program; if not, write to the Free Software |
| 18 |
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 |
|
|
*/ |
| 20 |
|
|
|
| 21 |
|
|
#include <string.h> |
| 22 |
|
|
#include <stdio.h> |
| 23 |
|
|
|
| 24 |
|
|
#include "sysdeps.h" |
| 25 |
|
|
#include "cpu_emulation.h" |
| 26 |
|
|
#include "main.h" |
| 27 |
|
|
#include "macos_util.h" |
| 28 |
|
|
#include "rom_patches.h" |
| 29 |
|
|
#include "rsrc_patches.h" |
| 30 |
|
|
#include "xpram.h" |
| 31 |
|
|
#include "adb.h" |
| 32 |
|
|
#include "timer.h" |
| 33 |
|
|
#include "clip.h" |
| 34 |
|
|
#include "serial.h" |
| 35 |
|
|
#include "sony.h" |
| 36 |
|
|
#include "disk.h" |
| 37 |
|
|
#include "cdrom.h" |
| 38 |
|
|
#include "scsi.h" |
| 39 |
|
|
#include "video.h" |
| 40 |
|
|
#include "audio.h" |
| 41 |
|
|
#include "ether.h" |
| 42 |
cebix |
1.4 |
#include "extfs.h" |
| 43 |
cebix |
1.1 |
#include "emul_op.h" |
| 44 |
|
|
|
| 45 |
cebix |
1.16 |
#ifdef ENABLE_MON |
| 46 |
cebix |
1.8 |
#include "mon.h" |
| 47 |
|
|
#endif |
| 48 |
|
|
|
| 49 |
cebix |
1.1 |
#define DEBUG 0 |
| 50 |
|
|
#include "debug.h" |
| 51 |
|
|
|
| 52 |
|
|
|
| 53 |
|
|
/* |
| 54 |
|
|
* Execute EMUL_OP opcode (called by 68k emulator or Illegal Instruction trap handler) |
| 55 |
|
|
*/ |
| 56 |
|
|
|
| 57 |
|
|
void EmulOp(uint16 opcode, M68kRegisters *r) |
| 58 |
|
|
{ |
| 59 |
|
|
D(bug("EmulOp %04x\n", opcode)); |
| 60 |
|
|
switch (opcode) { |
| 61 |
|
|
case M68K_EMUL_BREAK: { // Breakpoint |
| 62 |
|
|
printf("*** Breakpoint\n"); |
| 63 |
cebix |
1.27 |
printf("d0 %08x d1 %08x d2 %08x d3 %08x\n" |
| 64 |
|
|
"d4 %08x d5 %08x d6 %08x d7 %08x\n" |
| 65 |
|
|
"a0 %08x a1 %08x a2 %08x a3 %08x\n" |
| 66 |
|
|
"a4 %08x a5 %08x a6 %08x a7 %08x\n" |
| 67 |
cebix |
1.1 |
"sr %04x\n", |
| 68 |
|
|
r->d[0], r->d[1], r->d[2], r->d[3], r->d[4], r->d[5], r->d[6], r->d[7], |
| 69 |
|
|
r->a[0], r->a[1], r->a[2], r->a[3], r->a[4], r->a[5], r->a[6], r->a[7], |
| 70 |
|
|
r->sr); |
| 71 |
cebix |
1.25 |
VideoQuitFullScreen(); |
| 72 |
cebix |
1.16 |
#ifdef ENABLE_MON |
| 73 |
cebix |
1.20 |
char *arg[4] = {"mon", "-m", "-r", NULL}; |
| 74 |
|
|
mon(3, arg); |
| 75 |
cebix |
1.8 |
#endif |
| 76 |
cebix |
1.1 |
QuitEmulator(); |
| 77 |
|
|
break; |
| 78 |
|
|
} |
| 79 |
|
|
|
| 80 |
|
|
case M68K_EMUL_OP_SHUTDOWN: // Quit emulator |
| 81 |
|
|
QuitEmulator(); |
| 82 |
|
|
break; |
| 83 |
|
|
|
| 84 |
|
|
case M68K_EMUL_OP_RESET: { // MacOS reset |
| 85 |
|
|
D(bug("*** RESET ***\n")); |
| 86 |
|
|
TimerReset(); |
| 87 |
|
|
EtherReset(); |
| 88 |
cebix |
1.14 |
AudioReset(); |
| 89 |
cebix |
1.1 |
|
| 90 |
|
|
// Create BootGlobs at top of memory |
| 91 |
cebix |
1.12 |
Mac_memset(RAMBaseMac + RAMSize - 4096, 0, 4096); |
| 92 |
cebix |
1.1 |
uint32 boot_globs = RAMBaseMac + RAMSize - 0x1c; |
| 93 |
|
|
WriteMacInt32(boot_globs + 0x00, RAMBaseMac); // First RAM bank |
| 94 |
|
|
WriteMacInt32(boot_globs + 0x04, RAMSize); |
| 95 |
|
|
WriteMacInt32(boot_globs + 0x08, 0xffffffff); // End of bank table |
| 96 |
|
|
WriteMacInt32(boot_globs + 0x0c, 0); |
| 97 |
|
|
|
| 98 |
|
|
// Setup registers for boot routine |
| 99 |
|
|
r->d[0] = ReadMacInt32(ROMBaseMac + UniversalInfo + 0x18); // AddrMapFlags |
| 100 |
|
|
r->d[1] = ReadMacInt32(ROMBaseMac + UniversalInfo + 0x1c); // UnivROMFlags |
| 101 |
|
|
r->d[2] = ReadMacInt32(ROMBaseMac + UniversalInfo + 0x10); // HWCfgFlags/IDs |
| 102 |
|
|
if (FPUType) |
| 103 |
|
|
r->d[2] |= 0x10000000; // Set FPU flag if FPU present |
| 104 |
|
|
else |
| 105 |
|
|
r->d[2] &= 0xefffffff; // Clear FPU flag if no FPU present |
| 106 |
|
|
r->a[0] = ROMBaseMac + UniversalInfo + ReadMacInt32(ROMBaseMac + UniversalInfo);// AddrMap |
| 107 |
|
|
r->a[1] = ROMBaseMac + UniversalInfo; // UniversalInfo |
| 108 |
|
|
r->a[6] = boot_globs; // BootGlobs |
| 109 |
|
|
r->a[7] = RAMBaseMac + 0x10000; // Boot stack |
| 110 |
|
|
break; |
| 111 |
|
|
} |
| 112 |
|
|
|
| 113 |
|
|
case M68K_EMUL_OP_CLKNOMEM: { // Clock/PRAM operations |
| 114 |
|
|
bool is_read = r->d[1] & 0x80; |
| 115 |
|
|
if ((r->d[1] & 0x78) == 0x38) { |
| 116 |
|
|
// XPRAM |
| 117 |
|
|
uint8 reg = (r->d[1] << 5) & 0xe0 | (r->d[1] >> 10) & 0x1f; |
| 118 |
|
|
if (is_read) { |
| 119 |
|
|
r->d[2] = XPRAM[reg]; |
| 120 |
|
|
bool localtalk = !(XPRAM[0xe0] || XPRAM[0xe1]); // LocalTalk enabled? |
| 121 |
|
|
switch (reg) { |
| 122 |
|
|
case 0x08: |
| 123 |
|
|
if (ROMVersion != ROM_VERSION_32) |
| 124 |
|
|
r->d[2] &= 0xf8; |
| 125 |
|
|
break; |
| 126 |
|
|
case 0x8a: |
| 127 |
|
|
r->d[2] |= 0x05; // 32bit mode is always enabled |
| 128 |
|
|
break; |
| 129 |
|
|
case 0xe0: // Disable LocalTalk (use EtherTalk instead) |
| 130 |
|
|
if (localtalk) |
| 131 |
|
|
r->d[2] = 0x00; |
| 132 |
|
|
break; |
| 133 |
|
|
case 0xe1: |
| 134 |
|
|
if (localtalk) |
| 135 |
|
|
r->d[2] = 0xf1; |
| 136 |
|
|
break; |
| 137 |
|
|
case 0xe2: |
| 138 |
|
|
if (localtalk) |
| 139 |
|
|
r->d[2] = 0x00; |
| 140 |
|
|
break; |
| 141 |
|
|
case 0xe3: |
| 142 |
|
|
if (localtalk) |
| 143 |
|
|
r->d[2] = 0x0a; |
| 144 |
|
|
break; |
| 145 |
|
|
} |
| 146 |
|
|
D(bug("Read XPRAM %02x->%02lx\n", reg, r->d[2])); |
| 147 |
|
|
} else { |
| 148 |
|
|
D(bug("Write XPRAM %02x<-%02lx\n", reg, r->d[2] & 0xff)); |
| 149 |
|
|
if (reg == 0x8a && !TwentyFourBitAddressing) |
| 150 |
|
|
r->d[2] |= 0x05; // 32bit mode is always enabled if possible |
| 151 |
|
|
XPRAM[reg] = r->d[2]; |
| 152 |
|
|
} |
| 153 |
|
|
} else { |
| 154 |
|
|
// PRAM, RTC and other clock registers |
| 155 |
|
|
uint8 reg = (r->d[1] >> 2) & 0x1f; |
| 156 |
|
|
if (reg >= 0x10 || (reg >= 0x08 && reg < 0x0c)) { |
| 157 |
|
|
if (is_read) { |
| 158 |
|
|
r->d[2] = XPRAM[reg]; |
| 159 |
|
|
D(bug("Read XPRAM %02x->%02x\n", reg, XPRAM[reg])); |
| 160 |
|
|
} else { |
| 161 |
|
|
D(bug("Write PRAM %02x<-%02lx\n", reg, r->d[2])); |
| 162 |
|
|
XPRAM[reg] = r->d[2]; |
| 163 |
|
|
} |
| 164 |
|
|
} else if (reg < 0x08 && is_read) { |
| 165 |
|
|
uint32 t = TimerDateTime(); |
| 166 |
cebix |
1.2 |
uint8 b = t; |
| 167 |
cebix |
1.1 |
switch (reg & 3) { |
| 168 |
|
|
case 1: b = t >> 8; break; |
| 169 |
|
|
case 2: b = t >> 16; break; |
| 170 |
|
|
case 3: b = t >> 24; break; |
| 171 |
|
|
} |
| 172 |
|
|
r->d[2] = b; |
| 173 |
|
|
} else |
| 174 |
|
|
D(bug("RTC %s op %d, d1 %08lx d2 %08lx\n", is_read ? "read" : "write", reg, r->d[1], r->d[2])); |
| 175 |
|
|
} |
| 176 |
|
|
r->d[0] = 0; |
| 177 |
|
|
r->d[1] = r->d[2]; |
| 178 |
|
|
break; |
| 179 |
|
|
} |
| 180 |
|
|
|
| 181 |
|
|
case M68K_EMUL_OP_READ_XPRAM: // Read from XPRAM (ROM10/11) |
| 182 |
|
|
D(bug("Read XPRAM %02lx\n", r->d[1])); |
| 183 |
|
|
r->d[1] = XPRAM[r->d[1] & 0xff]; |
| 184 |
|
|
break; |
| 185 |
|
|
|
| 186 |
|
|
case M68K_EMUL_OP_READ_XPRAM2: // Read from XPRAM (ROM15) |
| 187 |
|
|
D(bug("Read XPRAM %02lx\n", r->d[0])); |
| 188 |
|
|
r->d[0] = XPRAM[r->d[0] & 0xff]; |
| 189 |
|
|
break; |
| 190 |
|
|
|
| 191 |
|
|
case M68K_EMUL_OP_PATCH_BOOT_GLOBS: // Patch BootGlobs at startup |
| 192 |
|
|
D(bug("Patch BootGlobs\n")); |
| 193 |
|
|
WriteMacInt32(r->a[4] - 20, RAMBaseMac + RAMSize); // MemTop |
| 194 |
|
|
WriteMacInt8(r->a[4] - 26, 0); // No MMU |
| 195 |
|
|
WriteMacInt8(r->a[4] - 25, ReadMacInt8(r->a[4] - 25) | 1); // No MMU |
| 196 |
|
|
r->a[6] = RAMBaseMac + RAMSize; |
| 197 |
|
|
break; |
| 198 |
|
|
|
| 199 |
|
|
case M68K_EMUL_OP_FIX_BOOTSTACK: // Set boot stack to 3/4 of RAM (7.5) |
| 200 |
|
|
r->a[1] = RAMBaseMac + RAMSize * 3 / 4; |
| 201 |
cebix |
1.16 |
D(bug("Fix boot stack %08x\n", r->a[1])); |
| 202 |
cebix |
1.1 |
break; |
| 203 |
|
|
|
| 204 |
|
|
case M68K_EMUL_OP_FIX_MEMSIZE: { // Set correct logical and physical memory size |
| 205 |
|
|
D(bug("Fix MemSize\n")); |
| 206 |
|
|
uint32 diff = ReadMacInt32(0x1ef8) - ReadMacInt32(0x1ef4); // Difference between logical and physical size |
| 207 |
|
|
WriteMacInt32(0x1ef8, RAMSize); // Physical RAM size |
| 208 |
|
|
WriteMacInt32(0x1ef4, RAMSize - diff); // Logical RAM size |
| 209 |
|
|
break; |
| 210 |
|
|
} |
| 211 |
|
|
|
| 212 |
|
|
case M68K_EMUL_OP_ADBOP: // ADBOp() replacement |
| 213 |
|
|
ADBOp(r->d[0], Mac2HostAddr(ReadMacInt32(r->a[0]))); |
| 214 |
|
|
break; |
| 215 |
|
|
|
| 216 |
|
|
case M68K_EMUL_OP_INSTIME: // InsTime() replacement |
| 217 |
|
|
r->d[0] = InsTime(r->a[0], r->d[1]); |
| 218 |
|
|
break; |
| 219 |
|
|
|
| 220 |
|
|
case M68K_EMUL_OP_RMVTIME: // RmvTime() replacement |
| 221 |
|
|
r->d[0] = RmvTime(r->a[0]); |
| 222 |
|
|
break; |
| 223 |
|
|
|
| 224 |
|
|
case M68K_EMUL_OP_PRIMETIME: // PrimeTime() replacement |
| 225 |
|
|
r->d[0] = PrimeTime(r->a[0], r->d[0]); |
| 226 |
|
|
break; |
| 227 |
|
|
|
| 228 |
|
|
case M68K_EMUL_OP_MICROSECONDS: // Microseconds() replacement |
| 229 |
|
|
Microseconds(r->a[0], r->d[0]); |
| 230 |
|
|
break; |
| 231 |
|
|
|
| 232 |
|
|
case M68K_EMUL_OP_INSTALL_DRIVERS: {// Patch to install our own drivers during startup |
| 233 |
|
|
// Install drivers |
| 234 |
|
|
D(bug("InstallDrivers\n")); |
| 235 |
|
|
InstallDrivers(r->a[0]); |
| 236 |
|
|
|
| 237 |
|
|
// Install PutScrap() patch |
| 238 |
|
|
M68kRegisters r; |
| 239 |
|
|
r.d[0] = 0xa9fe; |
| 240 |
|
|
r.a[0] = PutScrapPatch; |
| 241 |
|
|
Execute68kTrap(0xa647, &r); // SetToolTrap() |
| 242 |
|
|
|
| 243 |
|
|
// Setup fake ASC registers |
| 244 |
|
|
if (ROMVersion == ROM_VERSION_32) { |
| 245 |
|
|
r.d[0] = 0x1000; |
| 246 |
|
|
Execute68kTrap(0xa71e, &r); // NewPtrSysClear() |
| 247 |
|
|
uint32 asc_regs = r.a[0]; |
| 248 |
|
|
D(bug("ASC registers at %08lx\n", asc_regs)); |
| 249 |
|
|
WriteMacInt8(asc_regs + 0x800, 0x0f); // Set ASC version number |
| 250 |
|
|
WriteMacInt32(0xcc0, asc_regs); // Set ASCBase |
| 251 |
|
|
} |
| 252 |
|
|
break; |
| 253 |
|
|
} |
| 254 |
|
|
|
| 255 |
|
|
case M68K_EMUL_OP_SERD: // Install serial drivers |
| 256 |
|
|
D(bug("InstallSERD\n")); |
| 257 |
|
|
InstallSERD(); |
| 258 |
|
|
break; |
| 259 |
|
|
|
| 260 |
|
|
case M68K_EMUL_OP_SONY_OPEN: // Floppy driver functions |
| 261 |
|
|
r->d[0] = SonyOpen(r->a[0], r->a[1]); |
| 262 |
|
|
break; |
| 263 |
|
|
|
| 264 |
|
|
case M68K_EMUL_OP_SONY_PRIME: |
| 265 |
|
|
r->d[0] = SonyPrime(r->a[0], r->a[1]); |
| 266 |
|
|
break; |
| 267 |
|
|
|
| 268 |
|
|
case M68K_EMUL_OP_SONY_CONTROL: |
| 269 |
|
|
r->d[0] = SonyControl(r->a[0], r->a[1]); |
| 270 |
|
|
break; |
| 271 |
|
|
|
| 272 |
|
|
case M68K_EMUL_OP_SONY_STATUS: |
| 273 |
|
|
r->d[0] = SonyStatus(r->a[0], r->a[1]); |
| 274 |
|
|
break; |
| 275 |
|
|
|
| 276 |
|
|
case M68K_EMUL_OP_DISK_OPEN: // Disk driver functions |
| 277 |
|
|
r->d[0] = DiskOpen(r->a[0], r->a[1]); |
| 278 |
|
|
break; |
| 279 |
|
|
|
| 280 |
|
|
case M68K_EMUL_OP_DISK_PRIME: |
| 281 |
|
|
r->d[0] = DiskPrime(r->a[0], r->a[1]); |
| 282 |
|
|
break; |
| 283 |
|
|
|
| 284 |
|
|
case M68K_EMUL_OP_DISK_CONTROL: |
| 285 |
|
|
r->d[0] = DiskControl(r->a[0], r->a[1]); |
| 286 |
|
|
break; |
| 287 |
|
|
|
| 288 |
|
|
case M68K_EMUL_OP_DISK_STATUS: |
| 289 |
|
|
r->d[0] = DiskStatus(r->a[0], r->a[1]); |
| 290 |
|
|
break; |
| 291 |
|
|
|
| 292 |
|
|
case M68K_EMUL_OP_CDROM_OPEN: // CD-ROM driver functions |
| 293 |
|
|
r->d[0] = CDROMOpen(r->a[0], r->a[1]); |
| 294 |
|
|
break; |
| 295 |
|
|
|
| 296 |
|
|
case M68K_EMUL_OP_CDROM_PRIME: |
| 297 |
|
|
r->d[0] = CDROMPrime(r->a[0], r->a[1]); |
| 298 |
|
|
break; |
| 299 |
|
|
|
| 300 |
|
|
case M68K_EMUL_OP_CDROM_CONTROL: |
| 301 |
|
|
r->d[0] = CDROMControl(r->a[0], r->a[1]); |
| 302 |
|
|
break; |
| 303 |
|
|
|
| 304 |
|
|
case M68K_EMUL_OP_CDROM_STATUS: |
| 305 |
|
|
r->d[0] = CDROMStatus(r->a[0], r->a[1]); |
| 306 |
|
|
break; |
| 307 |
|
|
|
| 308 |
|
|
case M68K_EMUL_OP_VIDEO_OPEN: // Video driver functions |
| 309 |
cebix |
1.5 |
r->d[0] = VideoDriverOpen(r->a[0], r->a[1]); |
| 310 |
cebix |
1.1 |
break; |
| 311 |
|
|
|
| 312 |
|
|
case M68K_EMUL_OP_VIDEO_CONTROL: |
| 313 |
cebix |
1.5 |
r->d[0] = VideoDriverControl(r->a[0], r->a[1]); |
| 314 |
cebix |
1.1 |
break; |
| 315 |
|
|
|
| 316 |
|
|
case M68K_EMUL_OP_VIDEO_STATUS: |
| 317 |
cebix |
1.5 |
r->d[0] = VideoDriverStatus(r->a[0], r->a[1]); |
| 318 |
cebix |
1.1 |
break; |
| 319 |
|
|
|
| 320 |
|
|
case M68K_EMUL_OP_SERIAL_OPEN: // Serial driver functions |
| 321 |
|
|
r->d[0] = SerialOpen(r->a[0], r->a[1], r->d[0]); |
| 322 |
|
|
break; |
| 323 |
|
|
|
| 324 |
|
|
case M68K_EMUL_OP_SERIAL_PRIME: |
| 325 |
|
|
r->d[0] = SerialPrime(r->a[0], r->a[1], r->d[0]); |
| 326 |
|
|
break; |
| 327 |
|
|
|
| 328 |
|
|
case M68K_EMUL_OP_SERIAL_CONTROL: |
| 329 |
|
|
r->d[0] = SerialControl(r->a[0], r->a[1], r->d[0]); |
| 330 |
|
|
break; |
| 331 |
|
|
|
| 332 |
|
|
case M68K_EMUL_OP_SERIAL_STATUS: |
| 333 |
|
|
r->d[0] = SerialStatus(r->a[0], r->a[1], r->d[0]); |
| 334 |
|
|
break; |
| 335 |
|
|
|
| 336 |
|
|
case M68K_EMUL_OP_SERIAL_CLOSE: |
| 337 |
|
|
r->d[0] = SerialClose(r->a[0], r->a[1], r->d[0]); |
| 338 |
|
|
break; |
| 339 |
|
|
|
| 340 |
|
|
case M68K_EMUL_OP_ETHER_OPEN: // Ethernet driver functions |
| 341 |
|
|
r->d[0] = EtherOpen(r->a[0], r->a[1]); |
| 342 |
|
|
break; |
| 343 |
|
|
|
| 344 |
|
|
case M68K_EMUL_OP_ETHER_CONTROL: |
| 345 |
|
|
r->d[0] = EtherControl(r->a[0], r->a[1]); |
| 346 |
|
|
break; |
| 347 |
|
|
|
| 348 |
|
|
case M68K_EMUL_OP_ETHER_READ_PACKET: |
| 349 |
|
|
EtherReadPacket((uint8 **)&r->a[0], r->a[3], r->d[3], r->d[1]); |
| 350 |
|
|
break; |
| 351 |
|
|
|
| 352 |
cebix |
1.18 |
case M68K_EMUL_OP_SOUNDIN_OPEN: // Sound input driver functions |
| 353 |
|
|
r->d[0] = SoundInOpen(r->a[0], r->a[1]); |
| 354 |
|
|
break; |
| 355 |
|
|
|
| 356 |
|
|
case M68K_EMUL_OP_SOUNDIN_PRIME: |
| 357 |
|
|
r->d[0] = SoundInPrime(r->a[0], r->a[1]); |
| 358 |
|
|
break; |
| 359 |
|
|
|
| 360 |
|
|
case M68K_EMUL_OP_SOUNDIN_CONTROL: |
| 361 |
|
|
r->d[0] = SoundInControl(r->a[0], r->a[1]); |
| 362 |
|
|
break; |
| 363 |
|
|
|
| 364 |
|
|
case M68K_EMUL_OP_SOUNDIN_STATUS: |
| 365 |
|
|
r->d[0] = SoundInStatus(r->a[0], r->a[1]); |
| 366 |
|
|
break; |
| 367 |
|
|
|
| 368 |
|
|
case M68K_EMUL_OP_SOUNDIN_CLOSE: |
| 369 |
|
|
r->d[0] = SoundInClose(r->a[0], r->a[1]); |
| 370 |
|
|
break; |
| 371 |
|
|
|
| 372 |
cebix |
1.1 |
case M68K_EMUL_OP_SCSI_DISPATCH: { // SCSIDispatch() replacement |
| 373 |
|
|
uint32 ret = ReadMacInt32(r->a[7]); // Get return address |
| 374 |
|
|
uint16 sel = ReadMacInt16(r->a[7] + 4); // Get selector |
| 375 |
|
|
r->a[7] += 6; |
| 376 |
|
|
int stack = 0; |
| 377 |
|
|
switch (sel) { |
| 378 |
|
|
case 0: // SCSIReset |
| 379 |
|
|
WriteMacInt16(r->a[7], SCSIReset()); |
| 380 |
|
|
stack = 0; |
| 381 |
|
|
break; |
| 382 |
|
|
case 1: // SCSIGet |
| 383 |
|
|
WriteMacInt16(r->a[7], SCSIGet()); |
| 384 |
|
|
stack = 0; |
| 385 |
|
|
break; |
| 386 |
|
|
case 2: // SCSISelect |
| 387 |
|
|
case 11: // SCSISelAtn |
| 388 |
|
|
WriteMacInt16(r->a[7] + 2, SCSISelect(ReadMacInt16(r->a[7]) & 0xff)); |
| 389 |
|
|
stack = 2; |
| 390 |
|
|
break; |
| 391 |
|
|
case 3: // SCSICmd |
| 392 |
|
|
WriteMacInt16(r->a[7] + 6, SCSICmd(ReadMacInt16(r->a[7]), Mac2HostAddr(ReadMacInt32(r->a[7] + 2)))); |
| 393 |
|
|
stack = 6; |
| 394 |
|
|
break; |
| 395 |
|
|
case 4: // SCSIComplete |
| 396 |
|
|
WriteMacInt16(r->a[7] + 12, SCSIComplete(ReadMacInt32(r->a[7]), ReadMacInt32(r->a[7] + 4), ReadMacInt32(r->a[7] + 8))); |
| 397 |
|
|
stack = 12; |
| 398 |
|
|
break; |
| 399 |
|
|
case 5: // SCSIRead |
| 400 |
|
|
case 8: // SCSIRBlind |
| 401 |
|
|
WriteMacInt16(r->a[7] + 4, SCSIRead(ReadMacInt32(r->a[7]))); |
| 402 |
|
|
stack = 4; |
| 403 |
|
|
break; |
| 404 |
|
|
case 6: // SCSIWrite |
| 405 |
|
|
case 9: // SCSIWBlind |
| 406 |
|
|
WriteMacInt16(r->a[7] + 4, SCSIWrite(ReadMacInt32(r->a[7]))); |
| 407 |
|
|
stack = 4; |
| 408 |
|
|
break; |
| 409 |
|
|
case 10: // SCSIStat |
| 410 |
|
|
WriteMacInt16(r->a[7], SCSIStat()); |
| 411 |
|
|
stack = 0; |
| 412 |
|
|
break; |
| 413 |
|
|
case 12: // SCSIMsgIn |
| 414 |
|
|
WriteMacInt16(r->a[7] + 4, 0); |
| 415 |
|
|
stack = 4; |
| 416 |
|
|
break; |
| 417 |
|
|
case 13: // SCSIMsgOut |
| 418 |
|
|
WriteMacInt16(r->a[7] + 2, 0); |
| 419 |
|
|
stack = 2; |
| 420 |
|
|
break; |
| 421 |
|
|
case 14: // SCSIMgrBusy |
| 422 |
|
|
WriteMacInt16(r->a[7], SCSIMgrBusy()); |
| 423 |
|
|
stack = 0; |
| 424 |
|
|
break; |
| 425 |
|
|
default: |
| 426 |
|
|
printf("FATAL: SCSIDispatch(%d): illegal selector\n", sel); |
| 427 |
|
|
QuitEmulator(); |
| 428 |
|
|
break; |
| 429 |
|
|
} |
| 430 |
|
|
r->a[0] = ret; // "rtd" emulation, a0 = return address, a1 = new stack pointer |
| 431 |
|
|
r->a[1] = r->a[7] + stack; |
| 432 |
|
|
break; |
| 433 |
|
|
} |
| 434 |
|
|
|
| 435 |
|
|
case M68K_EMUL_OP_IRQ: // Level 1 interrupt |
| 436 |
|
|
r->d[0] = 0; |
| 437 |
cebix |
1.15 |
|
| 438 |
cebix |
1.1 |
if (InterruptFlags & INTFLAG_60HZ) { |
| 439 |
|
|
ClearInterruptFlag(INTFLAG_60HZ); |
| 440 |
cebix |
1.29 |
|
| 441 |
|
|
// Increment Ticks variable |
| 442 |
|
|
WriteMacInt32(0x16a, ReadMacInt32(0x16a) + 1); |
| 443 |
|
|
|
| 444 |
cebix |
1.1 |
if (HasMacStarted()) { |
| 445 |
|
|
|
| 446 |
cebix |
1.3 |
// Mac has started, execute all 60Hz interrupt functions |
| 447 |
cebix |
1.1 |
TimerInterrupt(); |
| 448 |
|
|
VideoInterrupt(); |
| 449 |
|
|
|
| 450 |
|
|
// Call DoVBLTask(0) |
| 451 |
|
|
if (ROMVersion == ROM_VERSION_32) { |
| 452 |
|
|
M68kRegisters r2; |
| 453 |
|
|
r2.d[0] = 0; |
| 454 |
|
|
Execute68kTrap(0xa072, &r2); |
| 455 |
|
|
} |
| 456 |
|
|
|
| 457 |
|
|
r->d[0] = 1; // Flag: 68k interrupt routine executes VBLTasks etc. |
| 458 |
|
|
} |
| 459 |
|
|
} |
| 460 |
cebix |
1.15 |
|
| 461 |
|
|
if (InterruptFlags & INTFLAG_1HZ) { |
| 462 |
|
|
ClearInterruptFlag(INTFLAG_1HZ); |
| 463 |
|
|
if (HasMacStarted()) { |
| 464 |
|
|
SonyInterrupt(); |
| 465 |
|
|
DiskInterrupt(); |
| 466 |
|
|
CDROMInterrupt(); |
| 467 |
|
|
} |
| 468 |
|
|
} |
| 469 |
|
|
|
| 470 |
cebix |
1.1 |
if (InterruptFlags & INTFLAG_SERIAL) { |
| 471 |
|
|
ClearInterruptFlag(INTFLAG_SERIAL); |
| 472 |
|
|
SerialInterrupt(); |
| 473 |
|
|
} |
| 474 |
cebix |
1.15 |
|
| 475 |
cebix |
1.1 |
if (InterruptFlags & INTFLAG_ETHER) { |
| 476 |
|
|
ClearInterruptFlag(INTFLAG_ETHER); |
| 477 |
|
|
EtherInterrupt(); |
| 478 |
|
|
} |
| 479 |
cebix |
1.15 |
|
| 480 |
cebix |
1.1 |
if (InterruptFlags & INTFLAG_AUDIO) { |
| 481 |
|
|
ClearInterruptFlag(INTFLAG_AUDIO); |
| 482 |
|
|
AudioInterrupt(); |
| 483 |
|
|
} |
| 484 |
jlachmann |
1.19 |
|
| 485 |
cebix |
1.26 |
if (InterruptFlags & INTFLAG_ADB) { |
| 486 |
|
|
ClearInterruptFlag(INTFLAG_ADB); |
| 487 |
|
|
if (HasMacStarted()) |
| 488 |
|
|
ADBInterrupt(); |
| 489 |
|
|
} |
| 490 |
|
|
|
| 491 |
jlachmann |
1.19 |
if (InterruptFlags & INTFLAG_NMI) { |
| 492 |
|
|
ClearInterruptFlag(INTFLAG_NMI); |
| 493 |
cebix |
1.26 |
if (HasMacStarted()) |
| 494 |
jlachmann |
1.19 |
TriggerNMI(); |
| 495 |
|
|
} |
| 496 |
cebix |
1.1 |
break; |
| 497 |
|
|
|
| 498 |
|
|
case M68K_EMUL_OP_PUT_SCRAP: { // PutScrap() patch |
| 499 |
|
|
void *scrap = Mac2HostAddr(ReadMacInt32(r->a[7] + 4)); |
| 500 |
|
|
uint32 type = ReadMacInt32(r->a[7] + 8); |
| 501 |
|
|
int32 length = ReadMacInt32(r->a[7] + 12); |
| 502 |
|
|
PutScrap(type, scrap, length); |
| 503 |
|
|
break; |
| 504 |
|
|
} |
| 505 |
|
|
|
| 506 |
|
|
case M68K_EMUL_OP_CHECKLOAD: { // vCheckLoad() patch (resource loader) |
| 507 |
|
|
uint32 type = r->d[1]; |
| 508 |
|
|
int16 id = ReadMacInt16(r->a[2]); |
| 509 |
|
|
if (r->a[0] == 0) |
| 510 |
|
|
break; |
| 511 |
|
|
uint32 adr = ReadMacInt32(r->a[0]); |
| 512 |
|
|
if (adr == 0) |
| 513 |
|
|
break; |
| 514 |
|
|
uint8 *p = Mac2HostAddr(adr); |
| 515 |
|
|
uint32 size = ReadMacInt32(adr - 8) & 0xffffff; |
| 516 |
|
|
CheckLoad(type, id, p, size); |
| 517 |
|
|
break; |
| 518 |
|
|
} |
| 519 |
|
|
|
| 520 |
|
|
case M68K_EMUL_OP_AUDIO: // Audio component dispatch function |
| 521 |
|
|
r->d[0] = AudioDispatch(r->a[3], r->a[4]); |
| 522 |
cebix |
1.4 |
break; |
| 523 |
|
|
|
| 524 |
cebix |
1.6 |
#if SUPPORTS_EXTFS |
| 525 |
cebix |
1.4 |
case M68K_EMUL_OP_EXTFS_COMM: // External file system routines |
| 526 |
|
|
WriteMacInt16(r->a[7] + 14, ExtFSComm(ReadMacInt16(r->a[7] + 12), ReadMacInt32(r->a[7] + 8), ReadMacInt32(r->a[7] + 4))); |
| 527 |
|
|
break; |
| 528 |
|
|
|
| 529 |
|
|
case M68K_EMUL_OP_EXTFS_HFS: |
| 530 |
|
|
WriteMacInt16(r->a[7] + 20, ExtFSHFS(ReadMacInt32(r->a[7] + 16), ReadMacInt16(r->a[7] + 14), ReadMacInt32(r->a[7] + 10), ReadMacInt32(r->a[7] + 6), ReadMacInt16(r->a[7] + 4))); |
| 531 |
cebix |
1.1 |
break; |
| 532 |
cebix |
1.6 |
#endif |
| 533 |
cebix |
1.1 |
|
| 534 |
cebix |
1.21 |
case M68K_EMUL_OP_BLOCK_MOVE: // BlockMove() cache flushing |
| 535 |
|
|
FlushCodeCache(Mac2HostAddr(r->a[0]), r->a[1]); |
| 536 |
cebix |
1.7 |
break; |
| 537 |
|
|
|
| 538 |
jlachmann |
1.19 |
case M68K_EMUL_OP_DEBUGUTIL: |
| 539 |
|
|
// printf("DebugUtil d0=%08lx a5=%08lx\n", r->d[0], r->a[5]); |
| 540 |
|
|
r->d[0] = DebugUtil(r->d[0]); |
| 541 |
|
|
break; |
| 542 |
|
|
|
| 543 |
cebix |
1.1 |
default: |
| 544 |
jlachmann |
1.19 |
printf("FATAL: EMUL_OP called with bogus opcode %08x\n", opcode); |
| 545 |
cebix |
1.27 |
printf("d0 %08x d1 %08x d2 %08x d3 %08x\n" |
| 546 |
|
|
"d4 %08x d5 %08x d6 %08x d7 %08x\n" |
| 547 |
|
|
"a0 %08x a1 %08x a2 %08x a3 %08x\n" |
| 548 |
|
|
"a4 %08x a5 %08x a6 %08x a7 %08x\n" |
| 549 |
cebix |
1.1 |
"sr %04x\n", |
| 550 |
|
|
r->d[0], r->d[1], r->d[2], r->d[3], r->d[4], r->d[5], r->d[6], r->d[7], |
| 551 |
|
|
r->a[0], r->a[1], r->a[2], r->a[3], r->a[4], r->a[5], r->a[6], r->a[7], |
| 552 |
|
|
r->sr); |
| 553 |
cebix |
1.16 |
#ifdef ENABLE_MON |
| 554 |
cebix |
1.20 |
char *arg[4] = {"mon", "-m", "-r", NULL}; |
| 555 |
|
|
mon(3, arg); |
| 556 |
cebix |
1.9 |
#endif |
| 557 |
cebix |
1.1 |
QuitEmulator(); |
| 558 |
|
|
break; |
| 559 |
|
|
} |
| 560 |
|
|
} |
