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, old_level;
59 char disasm_buf[4096];
61 #define KICKBASE 0xF80000
62 #define KICKSIZE 0x7FFFF
64 int mem_fd, mouse_fd = -1, keyboard_fd = -1;
73 extern m68ki_cpu_core m68ki_cpu;
74 extern int m68ki_initial_cycles;
75 extern int m68ki_remaining_cycles;
77 #define M68K_SET_IRQ(i) old_level = CPU_INT_LEVEL; \
78 CPU_INT_LEVEL = (i << 8); \
79 if(old_level != 0x0700 && CPU_INT_LEVEL == 0x0700) \
80 m68ki_cpu.nmi_pending = TRUE;
81 #define M68K_END_TIMESLICE m68ki_initial_cycles = GET_CYCLES(); \
84 #define M68K_SET_IRQ m68k_set_irq
85 #define M68K_END_TIMESLICE m68k_end_timeslice()
88 #define NOP asm("nop"); asm("nop"); asm("nop"); asm("nop");
90 #define DEBUG_EMULATOR
97 // Configurable emulator options
98 unsigned int cpu_type = M68K_CPU_TYPE_68000;
99 unsigned int loop_cycles = 300, irq_status = 0;
100 struct emulator_config *cfg = NULL;
101 char keyboard_file[256] = "/dev/input/event1";
103 uint64_t trig_irq = 0, serv_irq = 0;
104 uint16_t irq_delay = 0;
106 void *iplThread(void *args) {
107 printf("IPL thread running\n");
108 uint16_t old_irq = 0;
112 value = *(gpio + 13);
114 if (!(value & (1 << PIN_IPL_ZERO))) {
133 if (gayle_ide_enabled) {
134 if (((gayle_int & 0x80) || gayle_a4k_int) && (get_ide(0)->drive[0].intrq || get_ide(0)->drive[1].intrq)) {
135 //get_ide(0)->drive[0].intrq = 0;
143 NOP NOP NOP NOP NOP NOP NOP NOP
144 NOP NOP NOP NOP NOP NOP NOP NOP
145 NOP NOP NOP NOP NOP NOP NOP NOP
146 /*NOP NOP NOP NOP NOP NOP NOP NOP
147 NOP NOP NOP NOP NOP NOP NOP NOP
148 NOP NOP NOP NOP NOP NOP NOP NOP*/
153 void stop_cpu_emulation(uint8_t disasm_cur) {
156 m68k_disassemble(disasm_buf, m68k_get_reg(NULL, M68K_REG_PC), cpu_type);
157 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), \
158 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));
159 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), \
160 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));
161 printf("%.8X (%.8X)]] %s\n", m68k_get_reg(NULL, M68K_REG_PC), (m68k_get_reg(NULL, M68K_REG_PC) & 0xFFFFFF), disasm_buf);
162 realtime_disassembly = 1;
165 cpu_emulation_running = 0;
170 static volatile unsigned char maprom;
172 void sigint_handler(int sig_num) {
174 //cpu_emulation_running = 0;
177 printf("Received sigint %d, exiting.\n", sig_num);
183 if (cfg->platform->shutdown) {
184 cfg->platform->shutdown(cfg);
187 printf("IRQs triggered: %lld\n", trig_irq);
188 printf("IRQs serviced: %lld\n", serv_irq);
193 int main(int argc, char *argv[]) {
195 //const struct sched_param priority = {99};
198 irq_delay = atoi(argv[1]);
199 printf("Setting IRQ delay to %d loops (%s).\n", irq_delay, argv[1]);
202 // Some command line switch stuffles
203 for (g = 1; g < argc; g++) {
204 if (strcmp(argv[g], "--cpu_type") == 0 || strcmp(argv[g], "--cpu") == 0) {
206 printf("%s switch found, but no CPU type specified.\n", argv[g]);
209 cpu_type = get_m68k_cpu_type(argv[g]);
212 else if (strcmp(argv[g], "--config-file") == 0 || strcmp(argv[g], "--config") == 0) {
214 printf("%s switch found, but no config filename specified.\n", argv[g]);
217 cfg = load_config_file(argv[g]);
220 else if (strcmp(argv[g], "--keyboard-file") == 0 || strcmp(argv[g], "--kbfile") == 0) {
222 printf("%s switch found, but no keyboard device path specified.\n", argv[g]);
225 strcpy(keyboard_file, argv[g]);
231 printf("No config file specified. Trying to load default.cfg...\n");
232 cfg = load_config_file("default.cfg");
234 printf("Couldn't load default.cfg, empty emulator config will be used.\n");
235 cfg = (struct emulator_config *)calloc(1, sizeof(struct emulator_config));
237 printf("Failed to allocate memory for emulator config!\n");
240 memset(cfg, 0x00, sizeof(struct emulator_config));
245 if (cfg->cpu_type) cpu_type = cfg->cpu_type;
246 if (cfg->loop_cycles) loop_cycles = cfg->loop_cycles;
249 cfg->platform = make_platform_config("none", "generic");
250 cfg->platform->platform_initial_setup(cfg);
253 if (cfg->mouse_enabled) {
254 mouse_fd = open(cfg->mouse_file, O_RDONLY | O_NONBLOCK);
255 if (mouse_fd == -1) {
256 printf("Failed to open %s, can't enable mouse hook.\n", cfg->mouse_file);
257 cfg->mouse_enabled = 0;
261 keyboard_fd = open(keyboard_file, O_RDONLY | O_NONBLOCK);
262 if (keyboard_fd == -1) {
263 printf("Failed to open keyboard event source.\n");
268 signal(SIGINT, sigint_handler);
271 //goto skip_everything;
273 // Enable 200MHz CLK output on GPIO4, adjust divider and pll source depending
275 printf("Enable 200MHz GPCLK0 on GPIO4\n");
276 gpio_enable_200mhz();
278 // reset cpld statemachine first
286 // reset amiga and statemachine
292 printf("Setting CPU type to %d.\n", cpu_type);
293 m68k_set_cpu_type(cpu_type);
297 m68k_set_reg(M68K_REG_PC, 0xF80002);
299 m68k_set_reg(M68K_REG_PC, 0x0);
302 ps_reset_state_machine();
307 printf("Setting CPU type to %d.\n", cpu_type);
308 m68k_set_cpu_type(cpu_type);
311 char c = 0, c_code = 0, c_type = 0;
312 uint32_t last_irq = 0, last_last_irq = 0;
316 err = pthread_create(&id, NULL, &iplThread, NULL);
318 printf("can't create IPL thread :[%s]", strerror(err));
320 printf("IPL Thread created successfully\n");
324 if (mouse_hook_enabled) {
325 get_mouse_status(&mouse_dx, &mouse_dy, &mouse_buttons);
328 if (realtime_disassembly && (do_disasm || cpu_emulation_running)) {
329 m68k_disassemble(disasm_buf, m68k_get_reg(NULL, M68K_REG_PC), cpu_type);
330 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), \
331 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));
332 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), \
333 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));
334 printf("%.8X (%.8X)]] %s\n", m68k_get_reg(NULL, M68K_REG_PC), (m68k_get_reg(NULL, M68K_REG_PC) & 0xFFFFFF), disasm_buf);
340 if (cpu_emulation_running)
341 m68k_execute(loop_cycles);
346 last_irq = ((read_reg() & 0xe000) >> 13);
347 if (last_irq != last_last_irq) {
348 last_last_irq = last_irq;
349 M68K_SET_IRQ(last_irq);
353 if (gayleirq && int2_enabled) {
354 write16(0xdff09c, 0x8000 | (1 << 3) && last_irq != 2);
355 last_last_irq = last_irq;
365 last_last_irq = last_irq;
370 while (get_key_char(&c, &c_code, &c_type)) {
371 if (c && c == cfg->keyboard_toggle_key && !kb_hook_enabled) {
373 printf("Keyboard hook enabled.\n");
375 else if (kb_hook_enabled) {
376 if (c == 0x1B && c_type) {
378 printf("Keyboard hook disabled.\n");
381 /*printf("Key code: %.2X - ", c_code);
384 printf("released.\n");
387 printf("pressed.\n");
393 printf("unknown.\n");
396 if (queue_keypress(c_code, c_type, cfg->platform->id) && int2_enabled && last_irq != 2) {
403 if (!kb_hook_enabled && c_type) {
404 if (c && c == cfg->mouse_toggle_key) {
405 mouse_hook_enabled ^= 1;
406 printf("Mouse hook %s.\n", mouse_hook_enabled ? "enabled" : "disabled");
407 mouse_dx = mouse_dy = mouse_buttons = 0;
410 cpu_emulation_running ^= 1;
411 printf("CPU emulation is now %s\n", cpu_emulation_running ? "running" : "stopped");
414 realtime_graphics_debug ^= 1;
415 printf("Real time graphics debug is now %s\n", realtime_graphics_debug ? "on" : "off");
419 //m68k_pulse_reset();
420 printf("CPU emulation reset.\n");
423 printf("Quitting and exiting emulator.\n");
424 goto stop_cpu_emulation;
427 realtime_disassembly ^= 1;
429 printf("Real time disassembly is now %s\n", realtime_disassembly ? "on" : "off");
432 int r = get_mapped_item_by_address(cfg, 0x08000000);
434 printf("Dumping first 16MB of mapped range %d.\n", r);
435 FILE *dmp = fopen("./memdmp.bin", "wb+");
436 fwrite(cfg->map_data[r], 16 * SIZE_MEGA, 1, dmp);
440 if (c == 's' && realtime_disassembly) {
443 if (c == 'S' && realtime_disassembly) {
460 void cpu_pulse_reset(void) {
463 // printf("Status Reg%x\n",read_reg());
466 // printf("Status Reg%x\n",read_reg());
467 if (cfg->platform->handle_reset)
468 cfg->platform->handle_reset(cfg);
471 m68k_write_memory_16(INTENA, 0x7FFF);
473 m68k_write_memory_8(0xbfe201, 0x0001); // AMIGA OVL
474 m68k_write_memory_8(0xbfe001, 0x0001); // AMIGA OVL high (ROM@0x0)
479 int cpu_irq_ack(int level) {
480 printf("cpu irq ack\n");
484 static unsigned int target = 0;
485 static uint8_t send_keypress = 0;
487 uint8_t cdtv_dmac_reg_idx_read();
488 void cdtv_dmac_reg_idx_write(uint8_t value);
489 uint32_t cdtv_dmac_read(uint32_t address, uint8_t type);
490 void cdtv_dmac_write(uint32_t address, uint32_t value, uint8_t type);
492 #define PLATFORM_CHECK_READ(a) \
493 if (address >= cfg->custom_low && address < cfg->custom_high) { \
494 unsigned int target = 0; \
495 switch(cfg->platform->id) { \
496 case PLATFORM_AMIGA: { \
497 if (address >= PISCSI_OFFSET && address < PISCSI_UPPER) { \
498 return handle_piscsi_read(address, a); \
500 if (address >= PINET_OFFSET && address < PINET_UPPER) { \
501 return handle_pinet_read(address, a); \
503 if (address >= PIGFX_RTG_BASE && address < PIGFX_UPPER) { \
504 return rtg_read((address & 0x0FFFFFFF), a); \
506 if (custom_read_amiga(cfg, address, &target, a) != -1) { \
515 if (ovl || (address >= cfg->mapped_low && address < cfg->mapped_high)) { \
516 if (handle_mapped_read(cfg, address, &target, a) != -1) \
520 unsigned int m68k_read_memory_8(unsigned int address) {
521 PLATFORM_CHECK_READ(OP_TYPE_BYTE);
523 /*if (address >= 0xE90000 && address < 0xF00000) {
524 printf("BYTE read from DMAC @%.8X:", address);
525 uint32_t v = cdtv_dmac_read(address & 0xFFFF, OP_TYPE_BYTE);
528 cpu_emulation_running = 0;
532 /*if (m68k_get_reg(NULL, M68K_REG_PC) >= 0x080032F0 && m68k_get_reg(NULL, M68K_REG_PC) <= 0x080032F0 + 0x4000) {
533 stop_cpu_emulation(1);
537 if (address & 0xFF000000)
540 unsigned char result = (unsigned int)read8((uint32_t)address);
542 if (mouse_hook_enabled) {
543 if (address == CIAAPRA) {
544 if (mouse_buttons & 0x01) {
545 //mouse_buttons -= 1;
546 return (unsigned int)(result ^ 0x40);
549 return (unsigned int)result;
552 if (kb_hook_enabled) {
553 if (address == CIAAICR) {
554 if (get_num_kb_queued() && (!send_keypress || send_keypress == 1)) {
559 if (send_keypress == 2) {
565 if (address == CIAADAT) {
566 //if (send_keypress) {
567 uint8_t c = 0, t = 0;
568 pop_queued_key(&c, &t);
570 result = ((c << 1) | t) ^ 0xFF;
581 unsigned int m68k_read_memory_16(unsigned int address) {
582 PLATFORM_CHECK_READ(OP_TYPE_WORD);
584 /*if (m68k_get_reg(NULL, M68K_REG_PC) >= 0x080032F0 && m68k_get_reg(NULL, M68K_REG_PC) <= 0x080032F0 + 0x4000) {
585 stop_cpu_emulation(1);
588 /*if (address >= 0xE90000 && address < 0xF00000) {
589 printf("WORD read from DMAC @%.8X:", address);
590 uint32_t v = cdtv_dmac_read(address & 0xFFFF, OP_TYPE_WORD);
593 cpu_emulation_running = 0;
597 if (mouse_hook_enabled) {
598 if (address == JOY0DAT) {
599 // Forward mouse valueses to Amyga.
600 unsigned short result = (mouse_dy << 8) | (mouse_dx);
601 return (unsigned int)result;
603 /*if (address == CIAAPRA) {
604 unsigned short result = (unsigned int)read16((uint32_t)address);
605 if (mouse_buttons & 0x01) {
606 return (unsigned int)(result | 0x40);
609 return (unsigned int)result;
611 if (address == POTGOR) {
612 unsigned short result = (unsigned int)read16((uint32_t)address);
613 if (mouse_buttons & 0x02) {
614 return (unsigned int)(result ^ (0x2 << 9));
617 return (unsigned int)(result & 0xFFFD);
621 if (address & 0xFF000000)
624 if (address & 0x01) {
625 return ((read8(address) << 8) | read8(address + 1));
627 return (unsigned int)read16((uint32_t)address);
630 unsigned int m68k_read_memory_32(unsigned int address) {
631 PLATFORM_CHECK_READ(OP_TYPE_LONGWORD);
633 /*if (m68k_get_reg(NULL, M68K_REG_PC) >= 0x080032F0 && m68k_get_reg(NULL, M68K_REG_PC) <= 0x080032F0 + 0x4000) {
634 stop_cpu_emulation(1);
637 /*if (address >= 0xE90000 && address < 0xF00000) {
638 printf("LONGWORD read from DMAC @%.8X:", address);
639 uint32_t v = cdtv_dmac_read(address & 0xFFFF, OP_TYPE_LONGWORD);
642 cpu_emulation_running = 0;
646 if (address & 0xFF000000)
649 if (address & 0x01) {
650 uint32_t c = read8(address);
651 c |= (be16toh(read16(address+1)) << 8);
652 c |= (read8(address + 3) << 24);
655 uint16_t a = read16(address);
656 uint16_t b = read16(address + 2);
657 return (a << 16) | b;
660 #define PLATFORM_CHECK_WRITE(a) \
661 if (address >= cfg->custom_low && address < cfg->custom_high) { \
662 switch(cfg->platform->id) { \
663 case PLATFORM_AMIGA: { \
664 if (address >= PISCSI_OFFSET && address < PISCSI_UPPER) { \
665 handle_piscsi_write(address, value, a); \
667 if (address >= PINET_OFFSET && address < PINET_UPPER) { \
668 handle_pinet_write(address, value, a); \
670 if (address >= PIGFX_RTG_BASE && address < PIGFX_UPPER) { \
671 rtg_write((address & 0x0FFFFFFF), value, a); \
674 if (custom_write_amiga(cfg, address, value, a) != -1) { \
683 if (address >= cfg->mapped_low && address < cfg->mapped_high) { \
684 if (handle_mapped_write(cfg, address, value, a) != -1) \
688 void m68k_write_memory_8(unsigned int address, unsigned int value) {
689 PLATFORM_CHECK_WRITE(OP_TYPE_BYTE);
691 /*if (address >= 0xE90000 && address < 0xF00000) {
692 printf("BYTE write to DMAC @%.8X: %.2X\n", address, value);
693 cdtv_dmac_write(address & 0xFFFF, value, OP_TYPE_BYTE);
695 cpu_emulation_running = 0;
699 if (address == 0xbfe001) {
700 if (ovl != (value & (1 << 0))) {
701 ovl = (value & (1 << 0));
702 printf("OVL:%x\n", ovl);
706 if (address & 0xFF000000)
709 write8((uint32_t)address, value);
713 void m68k_write_memory_16(unsigned int address, unsigned int value) {
714 PLATFORM_CHECK_WRITE(OP_TYPE_WORD);
716 /*if (address >= 0xE90000 && address < 0xF00000) {
717 printf("WORD write to DMAC @%.8X: %.4X\n", address, value);
718 cdtv_dmac_write(address & 0xFFFF, value, OP_TYPE_WORD);
720 cpu_emulation_running = 0;
724 if (address == 0xDFF030) {
725 char *beb = (char *)&value;
726 printf("%c%c", beb[1], beb[0]);
728 if (address == 0xDFF09A) {
729 if (!(value & 0x8000)) {
734 else if (value & 0x04) {
739 if (address & 0xFF000000)
743 printf("Unaligned WORD write!\n");
745 write16((uint32_t)address, value);
749 void m68k_write_memory_32(unsigned int address, unsigned int value) {
750 PLATFORM_CHECK_WRITE(OP_TYPE_LONGWORD);
752 /*if (address >= 0xE90000 && address < 0xF00000) {
753 printf("LONGWORD write to DMAC @%.8X: %.8X\n", address, value);
754 cdtv_dmac_write(address & 0xFFFF, value, OP_TYPE_LONGWORD);
756 cpu_emulation_running = 0;
760 if (address & 0xFF000000)
764 printf("Unaligned LONGWORD write!\n");
766 write16(address, value >> 16);
767 write16(address + 2, value);