3 #include "platforms/platforms.h"
4 #include "input/input.h"
6 #include "platforms/amiga/Gayle.h"
7 #include "platforms/amiga/gayle-ide/ide.h"
8 #include "platforms/amiga/amiga-registers.h"
9 #include "platforms/amiga/rtg/rtg.h"
10 #include "platforms/amiga/hunk-reloc.h"
11 #include "platforms/amiga/piscsi/piscsi.h"
12 #include "platforms/amiga/piscsi/piscsi-enums.h"
13 #include "platforms/amiga/net/pi-net.h"
14 #include "platforms/amiga/net/pi-net-enums.h"
15 #include "gpio/ps_protocol.h"
29 #include <sys/ioctl.h>
32 #include <sys/types.h>
35 #define KEY_POLL_INTERVAL_MSEC 5000
37 unsigned char read_ranges;
38 unsigned int read_addr[8];
39 unsigned int read_upper[8];
40 unsigned char *read_data[8];
41 unsigned char write_ranges;
42 unsigned int write_addr[8];
43 unsigned int write_upper[8];
44 unsigned char *write_data[8];
46 int kb_hook_enabled = 0;
47 int mouse_hook_enabled = 0;
48 int cpu_emulation_running = 1;
50 uint8_t mouse_dx = 0, mouse_dy = 0;
51 uint8_t mouse_buttons = 0;
52 uint8_t mouse_extra = 0;
54 extern uint8_t gayle_int;
55 extern uint8_t gayle_ide_enabled;
56 extern uint8_t gayle_emulation_enabled;
57 extern uint8_t gayle_a4k_int;
58 extern volatile unsigned int *gpio;
59 extern volatile uint16_t srdata;
60 extern uint8_t realtime_graphics_debug;
61 uint8_t realtime_disassembly, int2_enabled = 0;
62 uint32_t do_disasm = 0, old_level;
63 char c = 0, c_code = 0, c_type = 0; // @todo temporary main/cpu_task scope workaround until input moved to a thread
64 uint32_t last_irq = 8, last_last_irq = 8;
66 char disasm_buf[4096];
68 #define KICKBASE 0xF80000
69 #define KICKSIZE 0x7FFFF
71 int mem_fd, mouse_fd = -1, keyboard_fd = -1;
80 extern m68ki_cpu_core m68ki_cpu;
81 extern int m68ki_initial_cycles;
82 extern int m68ki_remaining_cycles;
84 #define M68K_SET_IRQ(i) old_level = CPU_INT_LEVEL; \
85 CPU_INT_LEVEL = (i << 8); \
86 if(old_level != 0x0700 && CPU_INT_LEVEL == 0x0700) \
87 m68ki_cpu.nmi_pending = TRUE;
88 #define M68K_END_TIMESLICE m68ki_initial_cycles = GET_CYCLES(); \
91 #define M68K_SET_IRQ m68k_set_irq
92 #define M68K_END_TIMESLICE m68k_end_timeslice()
95 #define NOP asm("nop"); asm("nop"); asm("nop"); asm("nop");
97 #define DEBUG_EMULATOR
104 // Configurable emulator options
105 unsigned int cpu_type = M68K_CPU_TYPE_68000;
106 unsigned int loop_cycles = 300, irq_status = 0;
107 struct emulator_config *cfg = NULL;
108 char keyboard_file[256] = "/dev/input/event1";
110 uint64_t trig_irq = 0, serv_irq = 0;
111 uint16_t irq_delay = 0;
113 void *ipl_task(void *args) {
114 printf("IPL thread running\n");
115 uint16_t old_irq = 0;
119 value = *(gpio + 13);
121 if (!(value & (1 << PIN_IPL_ZERO))) {
143 /*if (gayle_ide_enabled) {
144 if (((gayle_int & 0x80) || gayle_a4k_int) && (get_ide(0)->drive[0].intrq || get_ide(0)->drive[1].intrq)) {
145 //get_ide(0)->drive[0].intrq = 0;
154 NOP NOP NOP NOP NOP NOP NOP NOP
155 //NOP NOP NOP NOP NOP NOP NOP NOP
156 //NOP NOP NOP NOP NOP NOP NOP NOP
157 /*NOP NOP NOP NOP NOP NOP NOP NOP
158 NOP NOP NOP NOP NOP NOP NOP NOP
159 NOP NOP NOP NOP NOP NOP NOP NOP*/
168 if (mouse_hook_enabled) {
169 get_mouse_status(&mouse_dx, &mouse_dy, &mouse_buttons, &mouse_extra);
172 if (realtime_disassembly && (do_disasm || cpu_emulation_running)) {
173 m68k_disassemble(disasm_buf, m68k_get_reg(NULL, M68K_REG_PC), cpu_type);
174 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), \
175 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));
176 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), \
177 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));
178 printf("%.8X (%.8X)]] %s\n", m68k_get_reg(NULL, M68K_REG_PC), (m68k_get_reg(NULL, M68K_REG_PC) & 0xFFFFFF), disasm_buf);
184 if (cpu_emulation_running)
185 m68k_execute(loop_cycles);
190 last_irq = ((read_reg() & 0xe000) >> 13);
191 if (last_irq != last_last_irq) {
192 last_last_irq = last_irq;
193 M68K_SET_IRQ(last_irq);
197 if (gayleirq && int2_enabled) {
198 write16(0xdff09c, 0x8000 | (1 << 3) && last_irq != 2);
199 last_last_irq = last_irq;
210 last_last_irq = last_irq;
215 if (mouse_hook_enabled && (mouse_extra != 0x00)) {
216 // mouse wheel events have occurred; unlike l/m/r buttons, these are queued as keypresses, so add to end of buffer
217 switch (mouse_extra) {
220 queue_keypress(0xfe, KEYPRESS_PRESS, PLATFORM_AMIGA);
224 queue_keypress(0xff, KEYPRESS_PRESS, PLATFORM_AMIGA);
228 // dampen the scroll wheel until next while loop iteration
233 //stop_cpu_emulation:
234 printf("[CPU] End of CPU thread\n");
237 void *keyboard_task() {
238 struct pollfd kbdfd[1];
241 printf("[KBD] Keyboard thread started\n");
243 kbdfd[0].fd = keyboard_fd;
244 kbdfd[0].events = POLLIN;
247 kpoll = poll(kbdfd, 1, KEY_POLL_INTERVAL_MSEC);
248 if ((kpoll > 0) && (kbdfd[0].revents & POLLHUP)) {
249 // in the event that a keyboard is unplugged, keyboard_task will whiz up to 100% utilisation
250 // this is undesired, so if the keyboard HUPs, end the thread without ending the emulation
251 printf("[KBD] Keyboard node returned HUP (unplugged?)\n");
255 // if kpoll > 0 then it contains number of events to pull, also check if POLLIN is set in revents
256 if ((kpoll <= 0) || !(kbdfd[0].revents & POLLIN)) {
260 while (get_key_char(&c, &c_code, &c_type)) {
261 if (c && c == cfg->keyboard_toggle_key && !kb_hook_enabled) {
263 printf("Keyboard hook enabled.\n");
265 else if (kb_hook_enabled) {
266 if (c == 0x1B && c_type) {
268 printf("Keyboard hook disabled.\n");
271 if (queue_keypress(c_code, c_type, cfg->platform->id) && int2_enabled && last_irq != 2) {
278 // pause pressed; trigger nmi (int level 7)
279 if (c == 0x01 && c_type) {
280 printf("[INT] Sending NMI\n");
284 if (!kb_hook_enabled && c_type) {
285 if (c && c == cfg->mouse_toggle_key) {
286 mouse_hook_enabled ^= 1;
287 printf("Mouse hook %s.\n", mouse_hook_enabled ? "enabled" : "disabled");
288 mouse_dx = mouse_dy = mouse_buttons = mouse_extra = 0;
291 cpu_emulation_running ^= 1;
292 printf("CPU emulation is now %s\n", cpu_emulation_running ? "running" : "stopped");
295 realtime_graphics_debug ^= 1;
296 printf("Real time graphics debug is now %s\n", realtime_graphics_debug ? "on" : "off");
300 //m68k_pulse_reset();
301 printf("CPU emulation reset.\n");
303 // @todo work out how to signal the main process that we want to quit
305 // printf("Quitting and exiting emulator.\n");
306 // goto stop_cpu_emulation;
309 realtime_disassembly ^= 1;
311 printf("Real time disassembly is now %s\n", realtime_disassembly ? "on" : "off");
314 int r = get_mapped_item_by_address(cfg, 0x08000000);
316 printf("Dumping first 16MB of mapped range %d.\n", r);
317 FILE *dmp = fopen("./memdmp.bin", "wb+");
318 fwrite(cfg->map_data[r], 16 * SIZE_MEGA, 1, dmp);
322 if (c == 's' && realtime_disassembly) {
325 if (c == 'S' && realtime_disassembly) {
334 printf("[KBD] Keyboard thread ending\n");
338 void stop_cpu_emulation(uint8_t disasm_cur) {
341 m68k_disassemble(disasm_buf, m68k_get_reg(NULL, M68K_REG_PC), cpu_type);
342 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), \
343 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));
344 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), \
345 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));
346 printf("%.8X (%.8X)]] %s\n", m68k_get_reg(NULL, M68K_REG_PC), (m68k_get_reg(NULL, M68K_REG_PC) & 0xFFFFFF), disasm_buf);
347 realtime_disassembly = 1;
350 cpu_emulation_running = 0;
355 static volatile unsigned char maprom;
357 void sigint_handler(int sig_num) {
359 //cpu_emulation_running = 0;
362 printf("Received sigint %d, exiting.\n", sig_num);
368 if (cfg->platform->shutdown) {
369 cfg->platform->shutdown(cfg);
372 printf("IRQs triggered: %lld\n", trig_irq);
373 printf("IRQs serviced: %lld\n", serv_irq);
378 int main(int argc, char *argv[]) {
380 //const struct sched_param priority = {99};
383 irq_delay = atoi(argv[1]);
384 printf("Setting IRQ delay to %d loops (%s).\n", irq_delay, argv[1]);
387 // Some command line switch stuffles
388 for (g = 1; g < argc; g++) {
389 if (strcmp(argv[g], "--cpu_type") == 0 || strcmp(argv[g], "--cpu") == 0) {
391 printf("%s switch found, but no CPU type specified.\n", argv[g]);
394 cpu_type = get_m68k_cpu_type(argv[g]);
397 else if (strcmp(argv[g], "--config-file") == 0 || strcmp(argv[g], "--config") == 0) {
399 printf("%s switch found, but no config filename specified.\n", argv[g]);
402 cfg = load_config_file(argv[g]);
405 else if (strcmp(argv[g], "--keyboard-file") == 0 || strcmp(argv[g], "--kbfile") == 0) {
407 printf("%s switch found, but no keyboard device path specified.\n", argv[g]);
410 strcpy(keyboard_file, argv[g]);
416 printf("No config file specified. Trying to load default.cfg...\n");
417 cfg = load_config_file("default.cfg");
419 printf("Couldn't load default.cfg, empty emulator config will be used.\n");
420 cfg = (struct emulator_config *)calloc(1, sizeof(struct emulator_config));
422 printf("Failed to allocate memory for emulator config!\n");
425 memset(cfg, 0x00, sizeof(struct emulator_config));
430 if (cfg->cpu_type) cpu_type = cfg->cpu_type;
431 if (cfg->loop_cycles) loop_cycles = cfg->loop_cycles;
434 cfg->platform = make_platform_config("none", "generic");
435 cfg->platform->platform_initial_setup(cfg);
438 if (cfg->mouse_enabled) {
439 mouse_fd = open(cfg->mouse_file, O_RDWR | O_NONBLOCK);
440 if (mouse_fd == -1) {
441 printf("Failed to open %s, can't enable mouse hook.\n", cfg->mouse_file);
442 cfg->mouse_enabled = 0;
445 * *-*-*-* magic numbers! *-*-*-*
446 * great, so waaaay back in the history of the pc, the ps/2 protocol set the standard for mice
447 * and in the process, the mouse sample rate was defined as a way of putting mice into vendor-specific modes.
448 * as the ancient gpm command explains, almost everything except incredibly old mice talk the IntelliMouse
449 * protocol, which reports four bytes. by default, every mouse starts in 3-byte mode (don't report wheel or
450 * additional buttons) until imps2 magic is sent. so, command $f3 is "set sample rate", followed by a byte.
452 uint8_t mouse_init[] = { 0xf4, 0xf3, 0x64 }; // enable, then set sample rate 100
453 uint8_t imps2_init[] = { 0xf3, 0xc8, 0xf3, 0x64, 0xf3, 0x50 }; // magic sequence; set sample 200, 100, 80
454 if (write(mouse_fd, mouse_init, sizeof(mouse_init)) != -1) {
455 if (write(mouse_fd, imps2_init, sizeof(imps2_init)) == -1)
456 printf("[MOUSE] Couldn't enable scroll wheel events; is this mouse from the 1980s?\n");
458 printf("[MOUSE] Mouse didn't respond to normal PS/2 init; have you plugged a brick in by mistake?\n");
462 if (cfg->keyboard_file)
463 keyboard_fd = open(cfg->keyboard_file, O_RDONLY | O_NONBLOCK);
465 keyboard_fd = open(keyboard_file, O_RDONLY | O_NONBLOCK);
467 if (keyboard_fd == -1) {
468 printf("Failed to open keyboard event source.\n");
473 signal(SIGINT, sigint_handler);
476 //goto skip_everything;
478 // Enable 200MHz CLK output on GPIO4, adjust divider and pll source depending
480 printf("Enable 200MHz GPCLK0 on GPIO4\n");
481 gpio_enable_200mhz();
483 // reset cpld statemachine first
491 // reset amiga and statemachine
497 printf("Setting CPU type to %d.\n", cpu_type);
498 m68k_set_cpu_type(cpu_type);
502 m68k_set_reg(M68K_REG_PC, 0xF80002);
504 m68k_set_reg(M68K_REG_PC, 0x0);
507 ps_reset_state_machine();
512 printf("Setting CPU type to %d.\n", cpu_type);
513 m68k_set_cpu_type(cpu_type);
516 pthread_t ipl_tid, cpu_tid, kbd_tid;
518 err = pthread_create(&ipl_tid, NULL, &ipl_task, NULL);
520 printf("[ERROR] Cannot create IPL thread: [%s]", strerror(err));
522 pthread_setname_np(ipl_tid, "pistorm: ipl");
523 printf("IPL thread created successfully\n");
526 // create keyboard task
527 err = pthread_create(&kbd_tid, NULL, &keyboard_task, NULL);
529 printf("[ERROR] Cannot create keyboard thread: [%s]", strerror(err));
531 pthread_setname_np(kbd_tid, "pistorm: kbd");
532 printf("[MAIN] Keyboard thread created successfully\n");
536 err = pthread_create(&cpu_tid, NULL, &cpu_task, NULL);
538 printf("[ERROR] Cannot create CPU thread: [%s]", strerror(err));
540 pthread_setname_np(cpu_tid, "pistorm: cpu");
541 printf("[MAIN] CPU thread created successfully\n");
544 // wait for cpu task to end before closing up and finishing
545 pthread_join(cpu_tid, NULL);
546 printf("[MAIN] All threads appear to have concluded; ending process\n");
556 void cpu_pulse_reset(void) {
559 // printf("Status Reg%x\n",read_reg());
562 // printf("Status Reg%x\n",read_reg());
563 if (cfg->platform->handle_reset)
564 cfg->platform->handle_reset(cfg);
566 //m68k_write_memory_16(INTENA, 0x7FFF);
568 m68k_write_memory_8(0xbfe201, 0x0001); // AMIGA OVL
569 m68k_write_memory_8(0xbfe001, 0x0001); // AMIGA OVL high (ROM@0x0)
574 int cpu_irq_ack(int level) {
575 printf("cpu irq ack\n");
579 static unsigned int target = 0;
580 static uint8_t send_keypress = 0;
582 uint8_t cdtv_dmac_reg_idx_read();
583 void cdtv_dmac_reg_idx_write(uint8_t value);
584 uint32_t cdtv_dmac_read(uint32_t address, uint8_t type);
585 void cdtv_dmac_write(uint32_t address, uint32_t value, uint8_t type);
587 #define PLATFORM_CHECK_READ(a) \
588 if (address >= cfg->custom_low && address < cfg->custom_high) { \
589 unsigned int target = 0; \
590 switch(cfg->platform->id) { \
591 case PLATFORM_AMIGA: { \
592 if (address >= PISCSI_OFFSET && address < PISCSI_UPPER) { \
593 return handle_piscsi_read(address, a); \
595 if (address >= PINET_OFFSET && address < PINET_UPPER) { \
596 return handle_pinet_read(address, a); \
598 if (address >= PIGFX_RTG_BASE && address < PIGFX_UPPER) { \
599 return rtg_read((address & 0x0FFFFFFF), a); \
601 if (custom_read_amiga(cfg, address, &target, a) != -1) { \
610 if (ovl || (address >= cfg->mapped_low && address < cfg->mapped_high)) { \
611 if (handle_mapped_read(cfg, address, &target, a) != -1) \
615 unsigned int m68k_read_memory_8(unsigned int address) {
616 PLATFORM_CHECK_READ(OP_TYPE_BYTE);
618 /*if (address >= 0xE90000 && address < 0xF00000) {
619 printf("BYTE read from DMAC @%.8X:", address);
620 uint32_t v = cdtv_dmac_read(address & 0xFFFF, OP_TYPE_BYTE);
623 cpu_emulation_running = 0;
627 /*if (m68k_get_reg(NULL, M68K_REG_PC) >= 0x080032F0 && m68k_get_reg(NULL, M68K_REG_PC) <= 0x080032F0 + 0x4000) {
628 stop_cpu_emulation(1);
632 if (address & 0xFF000000)
635 unsigned char result = (unsigned int)read8((uint32_t)address);
637 if (mouse_hook_enabled) {
638 if (address == CIAAPRA) {
639 if (mouse_buttons & 0x01) {
640 //mouse_buttons -= 1;
641 return (unsigned int)(result ^ 0x40);
644 return (unsigned int)result;
648 if (kb_hook_enabled) {
649 if (address == CIAAICR) {
650 if (get_num_kb_queued() && (!send_keypress || send_keypress == 1)) {
655 if (send_keypress == 2) {
661 if (address == CIAADAT) {
662 //if (send_keypress) {
663 uint8_t c = 0, t = 0;
664 pop_queued_key(&c, &t);
666 result = ((c << 1) | t) ^ 0xFF;
677 unsigned int m68k_read_memory_16(unsigned int address) {
678 PLATFORM_CHECK_READ(OP_TYPE_WORD);
680 /*if (m68k_get_reg(NULL, M68K_REG_PC) >= 0x080032F0 && m68k_get_reg(NULL, M68K_REG_PC) <= 0x080032F0 + 0x4000) {
681 stop_cpu_emulation(1);
684 /*if (address >= 0xE90000 && address < 0xF00000) {
685 printf("WORD read from DMAC @%.8X:", address);
686 uint32_t v = cdtv_dmac_read(address & 0xFFFF, OP_TYPE_WORD);
689 cpu_emulation_running = 0;
693 if (mouse_hook_enabled) {
694 if (address == JOY0DAT) {
695 // Forward mouse valueses to Amyga.
696 unsigned short result = (mouse_dy << 8) | (mouse_dx);
697 return (unsigned int)result;
699 /*if (address == CIAAPRA) {
700 unsigned short result = (unsigned int)read16((uint32_t)address);
701 if (mouse_buttons & 0x01) {
702 return (unsigned int)(result | 0x40);
705 return (unsigned int)result;
707 if (address == POTGOR) {
708 unsigned short result = (unsigned int)read16((uint32_t)address);
709 // bit 1 rmb, bit 2 mmb
710 if (mouse_buttons & 0x06) {
711 return (unsigned int)((result ^ ((mouse_buttons & 0x02) << 9)) // move rmb to bit 10
712 & (result ^ ((mouse_buttons & 0x04) << 6))); // move mmb to bit 8
714 return (unsigned int)(result & 0xfffd);
718 if (address & 0xFF000000)
721 if (address & 0x01) {
722 return ((read8(address) << 8) | read8(address + 1));
724 return (unsigned int)read16((uint32_t)address);
727 unsigned int m68k_read_memory_32(unsigned int address) {
728 PLATFORM_CHECK_READ(OP_TYPE_LONGWORD);
730 /*if (m68k_get_reg(NULL, M68K_REG_PC) >= 0x080032F0 && m68k_get_reg(NULL, M68K_REG_PC) <= 0x080032F0 + 0x4000) {
731 stop_cpu_emulation(1);
734 /*if (address >= 0xE90000 && address < 0xF00000) {
735 printf("LONGWORD read from DMAC @%.8X:", address);
736 uint32_t v = cdtv_dmac_read(address & 0xFFFF, OP_TYPE_LONGWORD);
739 cpu_emulation_running = 0;
743 if (address & 0xFF000000)
746 if (address & 0x01) {
747 uint32_t c = read8(address);
748 c |= (be16toh(read16(address+1)) << 8);
749 c |= (read8(address + 3) << 24);
752 uint16_t a = read16(address);
753 uint16_t b = read16(address + 2);
754 return (a << 16) | b;
757 #define PLATFORM_CHECK_WRITE(a) \
758 if (address >= cfg->custom_low && address < cfg->custom_high) { \
759 switch(cfg->platform->id) { \
760 case PLATFORM_AMIGA: { \
761 if (address >= PISCSI_OFFSET && address < PISCSI_UPPER) { \
762 handle_piscsi_write(address, value, a); \
764 if (address >= PINET_OFFSET && address < PINET_UPPER) { \
765 handle_pinet_write(address, value, a); \
767 if (address >= PIGFX_RTG_BASE && address < PIGFX_UPPER) { \
768 rtg_write((address & 0x0FFFFFFF), value, a); \
771 if (custom_write_amiga(cfg, address, value, a) != -1) { \
780 if (address >= cfg->mapped_low && address < cfg->mapped_high) { \
781 if (handle_mapped_write(cfg, address, value, a) != -1) \
785 void m68k_write_memory_8(unsigned int address, unsigned int value) {
786 PLATFORM_CHECK_WRITE(OP_TYPE_BYTE);
788 /*if (address >= 0xE90000 && address < 0xF00000) {
789 printf("BYTE write to DMAC @%.8X: %.2X\n", address, value);
790 cdtv_dmac_write(address & 0xFFFF, value, OP_TYPE_BYTE);
792 cpu_emulation_running = 0;
796 if (address == 0xbfe001) {
797 if (ovl != (value & (1 << 0))) {
798 ovl = (value & (1 << 0));
799 printf("OVL:%x\n", ovl);
803 if (address & 0xFF000000)
806 write8((uint32_t)address, value);
810 void m68k_write_memory_16(unsigned int address, unsigned int value) {
811 PLATFORM_CHECK_WRITE(OP_TYPE_WORD);
813 /*if (address >= 0xE90000 && address < 0xF00000) {
814 printf("WORD write to DMAC @%.8X: %.4X\n", address, value);
815 cdtv_dmac_write(address & 0xFFFF, value, OP_TYPE_WORD);
817 cpu_emulation_running = 0;
821 if (address == 0xDFF030) {
822 char *serdat = (char *)&value;
823 // SERDAT word. see amiga dev docs appendix a; upper byte is control codes, and bit 0 is always 1.
824 // ignore this upper byte as it's not viewable data, only display lower byte.
825 printf("%c", serdat[0]);
827 if (address == 0xDFF09A) {
828 if (!(value & 0x8000)) {
833 else if (value & 0x04) {
838 if (address & 0xFF000000)
842 printf("Unaligned WORD write!\n");
844 write16((uint32_t)address, value);
848 void m68k_write_memory_32(unsigned int address, unsigned int value) {
849 PLATFORM_CHECK_WRITE(OP_TYPE_LONGWORD);
851 /*if (address >= 0xE90000 && address < 0xF00000) {
852 printf("LONGWORD write to DMAC @%.8X: %.8X\n", address, value);
853 cdtv_dmac_write(address & 0xFFFF, value, OP_TYPE_LONGWORD);
855 cpu_emulation_running = 0;
859 if (address & 0xFF000000)
863 printf("Unaligned LONGWORD write!\n");
865 write16(address, value >> 16);
866 write16(address + 2, value);