14 #include <sys/types.h>
16 #include <sys/ioctl.h>
19 #include "platforms/platforms.h"
20 #include "input/input.h"
22 #include "platforms/amiga/Gayle.h"
23 #include "platforms/amiga/gayle-ide/ide.h"
24 #include "platforms/amiga/amiga-registers.h"
25 #include "platforms/amiga/rtg/rtg.h"
26 #include "platforms/amiga/hunk-reloc.h"
27 #include "platforms/amiga/piscsi/piscsi.h"
28 #include "platforms/amiga/piscsi/piscsi-enums.h"
29 #include "platforms/amiga/net/pi-net.h"
30 #include "platforms/amiga/net/pi-net-enums.h"
31 #include "gpio/ps_protocol.h"
33 unsigned char read_ranges;
34 unsigned int read_addr[8];
35 unsigned int read_upper[8];
36 unsigned char *read_data[8];
37 unsigned char write_ranges;
38 unsigned int write_addr[8];
39 unsigned int write_upper[8];
40 unsigned char *write_data[8];
42 int kb_hook_enabled = 0;
43 int mouse_hook_enabled = 0;
44 int cpu_emulation_running = 1;
46 char mouse_dx = 0, mouse_dy = 0;
47 char mouse_buttons = 0;
49 extern uint8_t gayle_int;
50 extern uint8_t gayle_ide_enabled;
51 extern uint8_t gayle_emulation_enabled;
52 extern uint8_t gayle_a4k_int;
53 extern volatile unsigned int *gpio;
54 extern volatile uint16_t srdata;
55 extern uint8_t realtime_graphics_debug;
56 uint8_t realtime_disassembly, int2_enabled = 0;
57 uint32_t do_disasm = 0;
59 char disasm_buf[4096];
61 #define KICKBASE 0xF80000
62 #define KICKSIZE 0x7FFFF
64 int mem_fd, mouse_fd = -1, keyboard_fd = -1;
69 // Configurable emulator options
70 unsigned int cpu_type = M68K_CPU_TYPE_68000;
71 unsigned int loop_cycles = 300;
72 struct emulator_config *cfg = NULL;
73 char keyboard_file[256] = "/dev/input/event1";
75 void *iplThread(void *args) {
76 printf("IPL thread running\n");
79 if (!gpio_get_irq()) {
86 if (gayle_ide_enabled) {
87 if (((gayle_int & 0x80) || gayle_a4k_int) && (get_ide(0)->drive[0].intrq || get_ide(0)->drive[1].intrq)) {
88 //get_ide(0)->drive[0].intrq = 0;
100 void stop_cpu_emulation(uint8_t disasm_cur) {
101 m68k_end_timeslice();
103 m68k_disassemble(disasm_buf, m68k_get_reg(NULL, M68K_REG_PC), cpu_type);
104 printf("REGA: 0:$%.8X 1:$%.8X 2:$%.8X 3:$%.8X 4:$%.8X 5:$%.8X 6:$%.8X 7:$%.8X\n", m68k_get_reg(NULL, M68K_REG_A0), m68k_get_reg(NULL, M68K_REG_A1), m68k_get_reg(NULL, M68K_REG_A2), m68k_get_reg(NULL, M68K_REG_A3), \
105 m68k_get_reg(NULL, M68K_REG_A4), m68k_get_reg(NULL, M68K_REG_A5), m68k_get_reg(NULL, M68K_REG_A6), m68k_get_reg(NULL, M68K_REG_A7));
106 printf("REGD: 0:$%.8X 1:$%.8X 2:$%.8X 3:$%.8X 4:$%.8X 5:$%.8X 6:$%.8X 7:$%.8X\n", m68k_get_reg(NULL, M68K_REG_D0), m68k_get_reg(NULL, M68K_REG_D1), m68k_get_reg(NULL, M68K_REG_D2), m68k_get_reg(NULL, M68K_REG_D3), \
107 m68k_get_reg(NULL, M68K_REG_D4), m68k_get_reg(NULL, M68K_REG_D5), m68k_get_reg(NULL, M68K_REG_D6), m68k_get_reg(NULL, M68K_REG_D7));
108 printf("%.8X (%.8X)]] %s\n", m68k_get_reg(NULL, M68K_REG_PC), (m68k_get_reg(NULL, M68K_REG_PC) & 0xFFFFFF), disasm_buf);
109 realtime_disassembly = 1;
112 cpu_emulation_running = 0;
117 static volatile unsigned char maprom;
119 void sigint_handler(int sig_num) {
121 //cpu_emulation_running = 0;
124 printf("Received sigint %d, exiting.\n", sig_num);
130 if (cfg->platform->shutdown) {
131 cfg->platform->shutdown(cfg);
137 int main(int argc, char *argv[]) {
139 const struct sched_param priority = {99};
141 // Some command line switch stuffles
142 for (g = 1; g < argc; g++) {
143 if (strcmp(argv[g], "--cpu_type") == 0 || strcmp(argv[g], "--cpu") == 0) {
145 printf("%s switch found, but no CPU type specified.\n", argv[g]);
148 cpu_type = get_m68k_cpu_type(argv[g]);
151 else if (strcmp(argv[g], "--config-file") == 0 || strcmp(argv[g], "--config") == 0) {
153 printf("%s switch found, but no config filename specified.\n", argv[g]);
156 cfg = load_config_file(argv[g]);
159 else if (strcmp(argv[g], "--keyboard-file") == 0 || strcmp(argv[g], "--kbfile") == 0) {
161 printf("%s switch found, but no keyboard device path specified.\n", argv[g]);
164 strcpy(keyboard_file, argv[g]);
170 printf("No config file specified. Trying to load default.cfg...\n");
171 cfg = load_config_file("default.cfg");
173 printf("Couldn't load default.cfg, empty emulator config will be used.\n");
174 cfg = (struct emulator_config *)calloc(1, sizeof(struct emulator_config));
176 printf("Failed to allocate memory for emulator config!\n");
179 memset(cfg, 0x00, sizeof(struct emulator_config));
184 if (cfg->cpu_type) cpu_type = cfg->cpu_type;
185 if (cfg->loop_cycles) loop_cycles = cfg->loop_cycles;
188 cfg->platform = make_platform_config("none", "generic");
189 cfg->platform->platform_initial_setup(cfg);
192 if (cfg->mouse_enabled) {
193 mouse_fd = open(cfg->mouse_file, O_RDONLY | O_NONBLOCK);
194 if (mouse_fd == -1) {
195 printf("Failed to open %s, can't enable mouse hook.\n", cfg->mouse_file);
196 cfg->mouse_enabled = 0;
200 keyboard_fd = open(keyboard_file, O_RDONLY | O_NONBLOCK);
201 if (keyboard_fd == -1) {
202 printf("Failed to open keyboard event source.\n");
207 signal(SIGINT, sigint_handler);
210 //goto skip_everything;
212 // Enable 200MHz CLK output on GPIO4, adjust divider and pll source depending
214 printf("Enable 200MHz GPCLK0 on GPIO4\n");
215 gpio_enable_200mhz();
217 // reset cpld statemachine first
225 // reset amiga and statemachine
231 printf("Setting CPU type to %d.\n", cpu_type);
232 m68k_set_cpu_type(cpu_type);
236 m68k_set_reg(M68K_REG_PC, 0xF80002);
238 m68k_set_reg(M68K_REG_PC, 0x0);
241 ps_reset_state_machine();
246 printf("Setting CPU type to %d.\n", cpu_type);
247 m68k_set_cpu_type(cpu_type);
250 char c = 0, c_code = 0, c_type = 0;
254 err = pthread_create(&id, NULL, &iplThread, NULL);
256 printf("can't create IPL thread :[%s]", strerror(err));
258 printf("IPL Thread created successfully\n");
262 if (mouse_hook_enabled) {
263 get_mouse_status(&mouse_dx, &mouse_dy, &mouse_buttons);
266 if (realtime_disassembly && (do_disasm || cpu_emulation_running)) {
267 m68k_disassemble(disasm_buf, m68k_get_reg(NULL, M68K_REG_PC), cpu_type);
268 printf("REGA: 0:$%.8X 1:$%.8X 2:$%.8X 3:$%.8X 4:$%.8X 5:$%.8X 6:$%.8X 7:$%.8X\n", m68k_get_reg(NULL, M68K_REG_A0), m68k_get_reg(NULL, M68K_REG_A1), m68k_get_reg(NULL, M68K_REG_A2), m68k_get_reg(NULL, M68K_REG_A3), \
269 m68k_get_reg(NULL, M68K_REG_A4), m68k_get_reg(NULL, M68K_REG_A5), m68k_get_reg(NULL, M68K_REG_A6), m68k_get_reg(NULL, M68K_REG_A7));
270 printf("REGD: 0:$%.8X 1:$%.8X 2:$%.8X 3:$%.8X 4:$%.8X 5:$%.8X 6:$%.8X 7:$%.8X\n", m68k_get_reg(NULL, M68K_REG_D0), m68k_get_reg(NULL, M68K_REG_D1), m68k_get_reg(NULL, M68K_REG_D2), m68k_get_reg(NULL, M68K_REG_D3), \
271 m68k_get_reg(NULL, M68K_REG_D4), m68k_get_reg(NULL, M68K_REG_D5), m68k_get_reg(NULL, M68K_REG_D6), m68k_get_reg(NULL, M68K_REG_D7));
272 printf("%.8X (%.8X)]] %s\n", m68k_get_reg(NULL, M68K_REG_PC), (m68k_get_reg(NULL, M68K_REG_PC) & 0xFFFFFF), disasm_buf);
278 if (cpu_emulation_running)
279 m68k_execute(loop_cycles);
283 unsigned int status = read_reg();
284 m68k_set_irq((status & 0xe000) >> 13);
286 else if (gayleirq && int2_enabled) {
287 write16(0xdff09c, 0x8000 | (1 << 3));
294 while (get_key_char(&c, &c_code, &c_type)) {
295 if (c && c == cfg->keyboard_toggle_key && !kb_hook_enabled) {
297 printf("Keyboard hook enabled.\n");
299 else if (kb_hook_enabled) {
300 if (c == 0x1B && c_type) {
302 printf("Keyboard hook disabled.\n");
305 /*printf("Key code: %.2X - ", c_code);
308 printf("released.\n");
311 printf("pressed.\n");
317 printf("unknown.\n");
320 if (queue_keypress(c_code, c_type, cfg->platform->id) && int2_enabled) {
326 if (!kb_hook_enabled && c_type) {
327 if (c && c == cfg->mouse_toggle_key) {
328 mouse_hook_enabled ^= 1;
329 printf("Mouse hook %s.\n", mouse_hook_enabled ? "enabled" : "disabled");
330 mouse_dx = mouse_dy = mouse_buttons = 0;
333 cpu_emulation_running ^= 1;
334 printf("CPU emulation is now %s\n", cpu_emulation_running ? "running" : "stopped");
337 realtime_graphics_debug ^= 1;
338 printf("Real time graphics debug is now %s\n", realtime_graphics_debug ? "on" : "off");
342 //m68k_pulse_reset();
343 printf("CPU emulation reset.\n");
346 printf("Quitting and exiting emulator.\n");
347 goto stop_cpu_emulation;
350 realtime_disassembly ^= 1;
352 printf("Real time disassembly is now %s\n", realtime_disassembly ? "on" : "off");
355 int r = get_mapped_item_by_address(cfg, 0x08000000);
357 printf("Dumping first 16MB of mapped range %d.\n", r);
358 FILE *dmp = fopen("./memdmp.bin", "wb+");
359 fwrite(cfg->map_data[r], 16 * SIZE_MEGA, 1, dmp);
363 if (c == 's' && realtime_disassembly) {
366 if (c == 'S' && realtime_disassembly) {
383 void cpu_pulse_reset(void) {
386 // printf("Status Reg%x\n",read_reg());
389 // printf("Status Reg%x\n",read_reg());
390 if (cfg->platform->handle_reset)
391 cfg->platform->handle_reset(cfg);
394 m68k_write_memory_8(0xbfe201, 0x0001); // AMIGA OVL
395 m68k_write_memory_8(0xbfe001, 0x0001); // AMIGA OVL high (ROM@0x0)
400 int cpu_irq_ack(int level) {
401 printf("cpu irq ack\n");
405 static unsigned int target = 0;
406 static uint8_t send_keypress = 0;
408 uint8_t cdtv_dmac_reg_idx_read();
409 void cdtv_dmac_reg_idx_write(uint8_t value);
410 uint32_t cdtv_dmac_read(uint32_t address, uint8_t type);
411 void cdtv_dmac_write(uint32_t address, uint32_t value, uint8_t type);
413 #define PLATFORM_CHECK_READ(a) \
414 if (address >= cfg->custom_low && address < cfg->custom_high) { \
415 unsigned int target = 0; \
416 switch(cfg->platform->id) { \
417 case PLATFORM_AMIGA: { \
418 if (address >= PISCSI_OFFSET && address < PISCSI_UPPER) { \
419 return handle_piscsi_read(address, a); \
421 if (address >= PINET_OFFSET && address < PINET_UPPER) { \
422 return handle_pinet_read(address, a); \
424 if (address >= PIGFX_RTG_BASE && address < PIGFX_UPPER) { \
425 return rtg_read((address & 0x0FFFFFFF), a); \
427 if (custom_read_amiga(cfg, address, &target, a) != -1) { \
436 if (ovl || (address >= cfg->mapped_low && address < cfg->mapped_high)) { \
437 if (handle_mapped_read(cfg, address, &target, a) != -1) \
441 unsigned int m68k_read_memory_8(unsigned int address) {
442 PLATFORM_CHECK_READ(OP_TYPE_BYTE);
444 /*if (address >= 0xE90000 && address < 0xF00000) {
445 printf("BYTE read from DMAC @%.8X:", address);
446 uint32_t v = cdtv_dmac_read(address & 0xFFFF, OP_TYPE_BYTE);
448 m68k_end_timeslice();
449 cpu_emulation_running = 0;
453 /*if (m68k_get_reg(NULL, M68K_REG_PC) >= 0x080032F0 && m68k_get_reg(NULL, M68K_REG_PC) <= 0x080032F0 + 0x4000) {
454 stop_cpu_emulation(1);
458 if (address & 0xFF000000)
461 unsigned char result = (unsigned int)read8((uint32_t)address);
463 if (mouse_hook_enabled) {
464 if (address == CIAAPRA) {
465 if (mouse_buttons & 0x01) {
466 //mouse_buttons -= 1;
467 return (unsigned int)(result ^ 0x40);
470 return (unsigned int)result;
473 if (kb_hook_enabled) {
474 if (address == CIAAICR) {
475 if (get_num_kb_queued() && (!send_keypress || send_keypress == 1)) {
480 if (send_keypress == 2) {
486 if (address == CIAADAT) {
488 uint8_t c = 0, t = 0;
489 pop_queued_key(&c, &t);
491 result = ((c << 1) | t) ^ 0xFF;
501 unsigned int m68k_read_memory_16(unsigned int address) {
502 PLATFORM_CHECK_READ(OP_TYPE_WORD);
504 /*if (m68k_get_reg(NULL, M68K_REG_PC) >= 0x080032F0 && m68k_get_reg(NULL, M68K_REG_PC) <= 0x080032F0 + 0x4000) {
505 stop_cpu_emulation(1);
508 /*if (address >= 0xE90000 && address < 0xF00000) {
509 printf("WORD read from DMAC @%.8X:", address);
510 uint32_t v = cdtv_dmac_read(address & 0xFFFF, OP_TYPE_WORD);
512 m68k_end_timeslice();
513 cpu_emulation_running = 0;
517 if (mouse_hook_enabled) {
518 if (address == JOY0DAT) {
519 // Forward mouse valueses to Amyga.
520 unsigned short result = (mouse_dy << 8) | (mouse_dx);
521 return (unsigned int)result;
523 /*if (address == CIAAPRA) {
524 unsigned short result = (unsigned int)read16((uint32_t)address);
525 if (mouse_buttons & 0x01) {
526 return (unsigned int)(result | 0x40);
529 return (unsigned int)result;
531 if (address == POTGOR) {
532 unsigned short result = (unsigned int)read16((uint32_t)address);
533 if (mouse_buttons & 0x02) {
534 return (unsigned int)(result ^ (0x2 << 9));
537 return (unsigned int)(result & 0xFFFD);
541 if (address & 0xFF000000)
544 if (address & 0x01) {
545 return ((read8(address) << 8) | read8(address + 1));
547 return (unsigned int)read16((uint32_t)address);
550 unsigned int m68k_read_memory_32(unsigned int address) {
551 PLATFORM_CHECK_READ(OP_TYPE_LONGWORD);
553 /*if (m68k_get_reg(NULL, M68K_REG_PC) >= 0x080032F0 && m68k_get_reg(NULL, M68K_REG_PC) <= 0x080032F0 + 0x4000) {
554 stop_cpu_emulation(1);
557 /*if (address >= 0xE90000 && address < 0xF00000) {
558 printf("LONGWORD read from DMAC @%.8X:", address);
559 uint32_t v = cdtv_dmac_read(address & 0xFFFF, OP_TYPE_LONGWORD);
561 m68k_end_timeslice();
562 cpu_emulation_running = 0;
566 if (address & 0xFF000000)
569 if (address & 0x01) {
570 uint32_t c = read8(address);
571 c |= (be16toh(read16(address+1)) << 8);
572 c |= (read8(address + 3) << 24);
575 uint16_t a = read16(address);
576 uint16_t b = read16(address + 2);
577 return (a << 16) | b;
580 #define PLATFORM_CHECK_WRITE(a) \
581 if (address >= cfg->custom_low && address < cfg->custom_high) { \
582 switch(cfg->platform->id) { \
583 case PLATFORM_AMIGA: { \
584 if (address >= PISCSI_OFFSET && address < PISCSI_UPPER) { \
585 handle_piscsi_write(address, value, a); \
587 if (address >= PINET_OFFSET && address < PINET_UPPER) { \
588 handle_pinet_write(address, value, a); \
590 if (address >= PIGFX_RTG_BASE && address < PIGFX_UPPER) { \
591 rtg_write((address & 0x0FFFFFFF), value, a); \
594 if (custom_write_amiga(cfg, address, value, a) != -1) { \
603 if (address >= cfg->mapped_low && address < cfg->mapped_high) { \
604 if (handle_mapped_write(cfg, address, value, a) != -1) \
608 void m68k_write_memory_8(unsigned int address, unsigned int value) {
609 PLATFORM_CHECK_WRITE(OP_TYPE_BYTE);
611 /*if (address >= 0xE90000 && address < 0xF00000) {
612 printf("BYTE write to DMAC @%.8X: %.2X\n", address, value);
613 cdtv_dmac_write(address & 0xFFFF, value, OP_TYPE_BYTE);
614 m68k_end_timeslice();
615 cpu_emulation_running = 0;
619 if (address == 0xbfe001) {
620 if (ovl != (value & (1 << 0))) {
621 ovl = (value & (1 << 0));
622 printf("OVL:%x\n", ovl);
626 if (address & 0xFF000000)
629 write8((uint32_t)address, value);
633 void m68k_write_memory_16(unsigned int address, unsigned int value) {
634 PLATFORM_CHECK_WRITE(OP_TYPE_WORD);
636 /*if (address >= 0xE90000 && address < 0xF00000) {
637 printf("WORD write to DMAC @%.8X: %.4X\n", address, value);
638 cdtv_dmac_write(address & 0xFFFF, value, OP_TYPE_WORD);
639 m68k_end_timeslice();
640 cpu_emulation_running = 0;
644 if (address == 0xDFF030) {
645 char *beb = (char *)&value;
646 printf("%c%c", beb[1], beb[0]);
648 if (address == 0xDFF09A) {
649 if (!(value & 0x8000)) {
654 else if (value & 0x04) {
659 if (address & 0xFF000000)
663 printf("Unaligned WORD write!\n");
665 write16((uint32_t)address, value);
669 void m68k_write_memory_32(unsigned int address, unsigned int value) {
670 PLATFORM_CHECK_WRITE(OP_TYPE_LONGWORD);
672 /*if (address >= 0xE90000 && address < 0xF00000) {
673 printf("LONGWORD write to DMAC @%.8X: %.8X\n", address, value);
674 cdtv_dmac_write(address & 0xFFFF, value, OP_TYPE_LONGWORD);
675 m68k_end_timeslice();
676 cpu_emulation_running = 0;
680 if (address & 0xFF000000)
684 printf("Unaligned LONGWORD write!\n");
686 write16(address, value >> 16);
687 write16(address + 2, value);