3 #include "platforms/platforms.h"
4 #include "input/input.h"
6 #include "platforms/amiga/Gayle.h"
7 #include "platforms/amiga/amiga-registers.h"
8 #include "platforms/amiga/rtg/rtg.h"
9 #include "platforms/amiga/hunk-reloc.h"
10 #include "platforms/amiga/piscsi/piscsi.h"
11 #include "platforms/amiga/piscsi/piscsi-enums.h"
12 #include "platforms/amiga/net/pi-net.h"
13 #include "platforms/amiga/net/pi-net-enums.h"
14 #include "gpio/ps_protocol.h"
28 #include <sys/ioctl.h>
31 #include <sys/types.h>
34 #define KEY_POLL_INTERVAL_MSEC 5000
36 unsigned char read_ranges;
37 unsigned int read_addr[8];
38 unsigned int read_upper[8];
39 unsigned char *read_data[8];
40 unsigned char write_ranges;
41 unsigned int write_addr[8];
42 unsigned int write_upper[8];
43 unsigned char *write_data[8];
45 int kb_hook_enabled = 0;
46 int mouse_hook_enabled = 0;
47 int cpu_emulation_running = 1;
49 uint8_t mouse_dx = 0, mouse_dy = 0;
50 uint8_t mouse_buttons = 0;
51 uint8_t mouse_extra = 0;
53 extern uint8_t gayle_int;
54 extern uint8_t gayle_ide_enabled;
55 extern uint8_t gayle_emulation_enabled;
56 extern uint8_t gayle_a4k_int;
57 extern volatile unsigned int *gpio;
58 extern volatile uint16_t srdata;
59 extern uint8_t realtime_graphics_debug;
60 uint8_t realtime_disassembly, int2_enabled = 0;
61 uint32_t do_disasm = 0, old_level;
62 char c = 0, c_code = 0, c_type = 0; // @todo temporary main/cpu_task scope workaround until input moved to a thread
63 uint32_t last_irq = 8, last_last_irq = 8;
65 char disasm_buf[4096];
67 #define KICKBASE 0xF80000
68 #define KICKSIZE 0x7FFFF
70 int mem_fd, mouse_fd = -1, keyboard_fd = -1;
79 extern m68ki_cpu_core m68ki_cpu;
80 extern int m68ki_initial_cycles;
81 extern int m68ki_remaining_cycles;
83 #define M68K_SET_IRQ(i) old_level = CPU_INT_LEVEL; \
84 CPU_INT_LEVEL = (i << 8); \
85 if(old_level != 0x0700 && CPU_INT_LEVEL == 0x0700) \
86 m68ki_cpu.nmi_pending = TRUE;
87 #define M68K_END_TIMESLICE m68ki_initial_cycles = GET_CYCLES(); \
90 #define M68K_SET_IRQ m68k_set_irq
91 #define M68K_END_TIMESLICE m68k_end_timeslice()
94 #define NOP asm("nop"); asm("nop"); asm("nop"); asm("nop");
96 #define DEBUG_EMULATOR
103 // Configurable emulator options
104 unsigned int cpu_type = M68K_CPU_TYPE_68000;
105 unsigned int loop_cycles = 300, irq_status = 0;
106 struct emulator_config *cfg = NULL;
107 char keyboard_file[256] = "/dev/input/event1";
109 uint64_t trig_irq = 0, serv_irq = 0;
110 uint16_t irq_delay = 0;
111 unsigned int amiga_reset=0, amiga_reset_last=0;
112 unsigned int do_reset=0;
114 void *ipl_task(void *args) {
115 printf("IPL thread running\n");
116 uint16_t old_irq = 0;
120 value = *(gpio + 13);
122 if (!(value & (1 << PIN_IPL_ZERO))) {
145 amiga_reset=(value & (1 << PIN_RESET));
146 if(amiga_reset!=amiga_reset_last)
148 amiga_reset_last=amiga_reset;
151 printf("Amiga Reset is down...\n");
157 printf("Amiga Reset is up...\n");
162 /*if (gayle_ide_enabled) {
163 if (((gayle_int & 0x80) || gayle_a4k_int) && (get_ide(0)->drive[0].intrq || get_ide(0)->drive[1].intrq)) {
164 //get_ide(0)->drive[0].intrq = 0;
173 NOP NOP NOP NOP NOP NOP NOP NOP
174 //NOP NOP NOP NOP NOP NOP NOP NOP
175 //NOP NOP NOP NOP NOP NOP NOP NOP
176 /*NOP NOP NOP NOP NOP NOP NOP NOP
177 NOP NOP NOP NOP NOP NOP NOP NOP
178 NOP NOP NOP NOP NOP NOP NOP NOP*/
187 if (mouse_hook_enabled) {
188 get_mouse_status(&mouse_dx, &mouse_dy, &mouse_buttons, &mouse_extra);
191 if (realtime_disassembly && (do_disasm || cpu_emulation_running)) {
192 m68k_disassemble(disasm_buf, m68k_get_reg(NULL, M68K_REG_PC), cpu_type);
193 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), \
194 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));
195 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), \
196 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));
197 printf("%.8X (%.8X)]] %s\n", m68k_get_reg(NULL, M68K_REG_PC), (m68k_get_reg(NULL, M68K_REG_PC) & 0xFFFFFF), disasm_buf);
203 if (cpu_emulation_running)
204 m68k_execute(loop_cycles);
209 last_irq = ((read_reg() & 0xe000) >> 13);
210 if (last_irq != last_last_irq) {
211 last_last_irq = last_irq;
212 M68K_SET_IRQ(last_irq);
216 if (gayleirq && int2_enabled) {
217 write16(0xdff09c, 0x8000 | (1 << 3) && last_irq != 2);
218 last_last_irq = last_irq;
229 last_last_irq = last_irq;
237 usleep(1000000); // 1sec
238 // while(amiga_reset==0);
239 // printf("CPU emulation reset.\n");
243 if (mouse_hook_enabled && (mouse_extra != 0x00)) {
244 // mouse wheel events have occurred; unlike l/m/r buttons, these are queued as keypresses, so add to end of buffer
245 switch (mouse_extra) {
248 queue_keypress(0xfe, KEYPRESS_PRESS, PLATFORM_AMIGA);
252 queue_keypress(0xff, KEYPRESS_PRESS, PLATFORM_AMIGA);
256 // dampen the scroll wheel until next while loop iteration
261 //stop_cpu_emulation:
262 printf("[CPU] End of CPU thread\n");
265 void *keyboard_task() {
266 struct pollfd kbdfd[1];
269 printf("[KBD] Keyboard thread started\n");
271 kbdfd[0].fd = keyboard_fd;
272 kbdfd[0].events = POLLIN;
275 kpoll = poll(kbdfd, 1, KEY_POLL_INTERVAL_MSEC);
276 if ((kpoll > 0) && (kbdfd[0].revents & POLLHUP)) {
277 // in the event that a keyboard is unplugged, keyboard_task will whiz up to 100% utilisation
278 // this is undesired, so if the keyboard HUPs, end the thread without ending the emulation
279 printf("[KBD] Keyboard node returned HUP (unplugged?)\n");
283 // if kpoll > 0 then it contains number of events to pull, also check if POLLIN is set in revents
284 if ((kpoll <= 0) || !(kbdfd[0].revents & POLLIN)) {
288 while (get_key_char(&c, &c_code, &c_type)) {
289 if (c && c == cfg->keyboard_toggle_key && !kb_hook_enabled) {
291 printf("Keyboard hook enabled.\n");
293 else if (kb_hook_enabled) {
294 if (c == 0x1B && c_type) {
296 printf("Keyboard hook disabled.\n");
299 if (queue_keypress(c_code, c_type, cfg->platform->id) && int2_enabled && last_irq != 2) {
306 // pause pressed; trigger nmi (int level 7)
307 if (c == 0x01 && c_type) {
308 printf("[INT] Sending NMI\n");
312 if (!kb_hook_enabled && c_type) {
313 if (c && c == cfg->mouse_toggle_key) {
314 mouse_hook_enabled ^= 1;
315 printf("Mouse hook %s.\n", mouse_hook_enabled ? "enabled" : "disabled");
316 mouse_dx = mouse_dy = mouse_buttons = mouse_extra = 0;
319 cpu_emulation_running ^= 1;
320 printf("CPU emulation is now %s\n", cpu_emulation_running ? "running" : "stopped");
323 realtime_graphics_debug ^= 1;
324 printf("Real time graphics debug is now %s\n", realtime_graphics_debug ? "on" : "off");
328 //m68k_pulse_reset();
329 printf("CPU emulation reset.\n");
331 // @todo work out how to signal the main process that we want to quit
333 // printf("Quitting and exiting emulator.\n");
334 // goto stop_cpu_emulation;
337 realtime_disassembly ^= 1;
339 printf("Real time disassembly is now %s\n", realtime_disassembly ? "on" : "off");
342 int r = get_mapped_item_by_address(cfg, 0x08000000);
344 printf("Dumping first 16MB of mapped range %d.\n", r);
345 FILE *dmp = fopen("./memdmp.bin", "wb+");
346 fwrite(cfg->map_data[r], 16 * SIZE_MEGA, 1, dmp);
350 if (c == 's' && realtime_disassembly) {
353 if (c == 'S' && realtime_disassembly) {
362 printf("[KBD] Keyboard thread ending\n");
366 void stop_cpu_emulation(uint8_t disasm_cur) {
369 m68k_disassemble(disasm_buf, m68k_get_reg(NULL, M68K_REG_PC), cpu_type);
370 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), \
371 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));
372 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), \
373 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));
374 printf("%.8X (%.8X)]] %s\n", m68k_get_reg(NULL, M68K_REG_PC), (m68k_get_reg(NULL, M68K_REG_PC) & 0xFFFFFF), disasm_buf);
375 realtime_disassembly = 1;
378 cpu_emulation_running = 0;
383 static volatile unsigned char maprom;
385 void sigint_handler(int sig_num) {
387 //cpu_emulation_running = 0;
390 printf("Received sigint %d, exiting.\n", sig_num);
396 if (cfg->platform->shutdown) {
397 cfg->platform->shutdown(cfg);
400 printf("IRQs triggered: %lld\n", trig_irq);
401 printf("IRQs serviced: %lld\n", serv_irq);
406 int main(int argc, char *argv[]) {
408 //const struct sched_param priority = {99};
411 irq_delay = atoi(argv[1]);
412 printf("Setting IRQ delay to %d loops (%s).\n", irq_delay, argv[1]);
415 // Some command line switch stuffles
416 for (g = 1; g < argc; g++) {
417 if (strcmp(argv[g], "--cpu_type") == 0 || strcmp(argv[g], "--cpu") == 0) {
419 printf("%s switch found, but no CPU type specified.\n", argv[g]);
422 cpu_type = get_m68k_cpu_type(argv[g]);
425 else if (strcmp(argv[g], "--config-file") == 0 || strcmp(argv[g], "--config") == 0) {
427 printf("%s switch found, but no config filename specified.\n", argv[g]);
430 cfg = load_config_file(argv[g]);
433 else if (strcmp(argv[g], "--keyboard-file") == 0 || strcmp(argv[g], "--kbfile") == 0) {
435 printf("%s switch found, but no keyboard device path specified.\n", argv[g]);
438 strcpy(keyboard_file, argv[g]);
444 printf("No config file specified. Trying to load default.cfg...\n");
445 cfg = load_config_file("default.cfg");
447 printf("Couldn't load default.cfg, empty emulator config will be used.\n");
448 cfg = (struct emulator_config *)calloc(1, sizeof(struct emulator_config));
450 printf("Failed to allocate memory for emulator config!\n");
453 memset(cfg, 0x00, sizeof(struct emulator_config));
458 if (cfg->cpu_type) cpu_type = cfg->cpu_type;
459 if (cfg->loop_cycles) loop_cycles = cfg->loop_cycles;
462 cfg->platform = make_platform_config("none", "generic");
463 cfg->platform->platform_initial_setup(cfg);
466 if (cfg->mouse_enabled) {
467 mouse_fd = open(cfg->mouse_file, O_RDWR | O_NONBLOCK);
468 if (mouse_fd == -1) {
469 printf("Failed to open %s, can't enable mouse hook.\n", cfg->mouse_file);
470 cfg->mouse_enabled = 0;
473 * *-*-*-* magic numbers! *-*-*-*
474 * great, so waaaay back in the history of the pc, the ps/2 protocol set the standard for mice
475 * and in the process, the mouse sample rate was defined as a way of putting mice into vendor-specific modes.
476 * as the ancient gpm command explains, almost everything except incredibly old mice talk the IntelliMouse
477 * protocol, which reports four bytes. by default, every mouse starts in 3-byte mode (don't report wheel or
478 * additional buttons) until imps2 magic is sent. so, command $f3 is "set sample rate", followed by a byte.
480 uint8_t mouse_init[] = { 0xf4, 0xf3, 0x64 }; // enable, then set sample rate 100
481 uint8_t imps2_init[] = { 0xf3, 0xc8, 0xf3, 0x64, 0xf3, 0x50 }; // magic sequence; set sample 200, 100, 80
482 if (write(mouse_fd, mouse_init, sizeof(mouse_init)) != -1) {
483 if (write(mouse_fd, imps2_init, sizeof(imps2_init)) == -1)
484 printf("[MOUSE] Couldn't enable scroll wheel events; is this mouse from the 1980s?\n");
486 printf("[MOUSE] Mouse didn't respond to normal PS/2 init; have you plugged a brick in by mistake?\n");
490 if (cfg->keyboard_file)
491 keyboard_fd = open(cfg->keyboard_file, O_RDONLY | O_NONBLOCK);
493 keyboard_fd = open(keyboard_file, O_RDONLY | O_NONBLOCK);
495 if (keyboard_fd == -1) {
496 printf("Failed to open keyboard event source.\n");
501 signal(SIGINT, sigint_handler);
504 //goto skip_everything;
506 // Enable 200MHz CLK output on GPIO4, adjust divider and pll source depending
508 printf("Enable 200MHz GPCLK0 on GPIO4\n");
509 gpio_enable_200mhz();
511 // reset cpld statemachine first
519 // reset amiga and statemachine
525 printf("Setting CPU type to %d.\n", cpu_type);
526 m68k_set_cpu_type(cpu_type);
530 m68k_set_reg(M68K_REG_PC, 0xF80002);
532 m68k_set_reg(M68K_REG_PC, 0x0);
535 ps_reset_state_machine();
540 printf("Setting CPU type to %d.\n", cpu_type);
541 m68k_set_cpu_type(cpu_type);
544 pthread_t ipl_tid, cpu_tid, kbd_tid;
546 err = pthread_create(&ipl_tid, NULL, &ipl_task, NULL);
548 printf("[ERROR] Cannot create IPL thread: [%s]", strerror(err));
550 pthread_setname_np(ipl_tid, "pistorm: ipl");
551 printf("IPL thread created successfully\n");
554 // create keyboard task
555 err = pthread_create(&kbd_tid, NULL, &keyboard_task, NULL);
557 printf("[ERROR] Cannot create keyboard thread: [%s]", strerror(err));
559 pthread_setname_np(kbd_tid, "pistorm: kbd");
560 printf("[MAIN] Keyboard thread created successfully\n");
564 err = pthread_create(&cpu_tid, NULL, &cpu_task, NULL);
566 printf("[ERROR] Cannot create CPU thread: [%s]", strerror(err));
568 pthread_setname_np(cpu_tid, "pistorm: cpu");
569 printf("[MAIN] CPU thread created successfully\n");
572 // wait for cpu task to end before closing up and finishing
573 pthread_join(cpu_tid, NULL);
574 printf("[MAIN] All threads appear to have concluded; ending process\n");
584 void cpu_pulse_reset(void) {
587 // printf("Status Reg%x\n",read_reg());
590 // printf("Status Reg%x\n",read_reg());
591 if (cfg->platform->handle_reset)
592 cfg->platform->handle_reset(cfg);
594 //m68k_write_memory_16(INTENA, 0x7FFF);
596 m68k_write_memory_8(0xbfe201, 0x0001); // AMIGA OVL
597 m68k_write_memory_8(0xbfe001, 0x0001); // AMIGA OVL high (ROM@0x0)
602 int cpu_irq_ack(int level) {
603 printf("cpu irq ack\n");
607 static unsigned int target = 0;
608 static uint8_t send_keypress = 0;
610 uint8_t cdtv_dmac_reg_idx_read();
611 void cdtv_dmac_reg_idx_write(uint8_t value);
612 uint32_t cdtv_dmac_read(uint32_t address, uint8_t type);
613 void cdtv_dmac_write(uint32_t address, uint32_t value, uint8_t type);
615 #define PLATFORM_CHECK_READ(a) \
616 if (address >= cfg->custom_low && address < cfg->custom_high) { \
617 unsigned int target = 0; \
618 switch(cfg->platform->id) { \
619 case PLATFORM_AMIGA: { \
620 if (address >= PISCSI_OFFSET && address < PISCSI_UPPER) { \
621 return handle_piscsi_read(address, a); \
623 if (address >= PINET_OFFSET && address < PINET_UPPER) { \
624 return handle_pinet_read(address, a); \
626 if (address >= PIGFX_RTG_BASE && address < PIGFX_UPPER) { \
627 return rtg_read((address & 0x0FFFFFFF), a); \
629 if (custom_read_amiga(cfg, address, &target, a) != -1) { \
638 if (ovl || (address >= cfg->mapped_low && address < cfg->mapped_high)) { \
639 if (handle_mapped_read(cfg, address, &target, a) != -1) \
643 unsigned int m68k_read_memory_8(unsigned int address) {
644 PLATFORM_CHECK_READ(OP_TYPE_BYTE);
646 /*if (address >= 0xE90000 && address < 0xF00000) {
647 printf("BYTE read from DMAC @%.8X:", address);
648 uint32_t v = cdtv_dmac_read(address & 0xFFFF, OP_TYPE_BYTE);
651 cpu_emulation_running = 0;
655 /*if (m68k_get_reg(NULL, M68K_REG_PC) >= 0x080032F0 && m68k_get_reg(NULL, M68K_REG_PC) <= 0x080032F0 + 0x4000) {
656 stop_cpu_emulation(1);
660 if (address & 0xFF000000)
663 unsigned char result = (unsigned int)read8((uint32_t)address);
665 if (mouse_hook_enabled) {
666 if (address == CIAAPRA) {
667 if (mouse_buttons & 0x01) {
668 //mouse_buttons -= 1;
669 return (unsigned int)(result ^ 0x40);
672 return (unsigned int)result;
676 if (kb_hook_enabled) {
677 if (address == CIAAICR) {
678 if (get_num_kb_queued() && (!send_keypress || send_keypress == 1)) {
683 if (send_keypress == 2) {
689 if (address == CIAADAT) {
690 //if (send_keypress) {
691 uint8_t c = 0, t = 0;
692 pop_queued_key(&c, &t);
694 result = ((c << 1) | t) ^ 0xFF;
705 unsigned int m68k_read_memory_16(unsigned int address) {
706 PLATFORM_CHECK_READ(OP_TYPE_WORD);
708 /*if (m68k_get_reg(NULL, M68K_REG_PC) >= 0x080032F0 && m68k_get_reg(NULL, M68K_REG_PC) <= 0x080032F0 + 0x4000) {
709 stop_cpu_emulation(1);
712 /*if (address >= 0xE90000 && address < 0xF00000) {
713 printf("WORD read from DMAC @%.8X:", address);
714 uint32_t v = cdtv_dmac_read(address & 0xFFFF, OP_TYPE_WORD);
717 cpu_emulation_running = 0;
721 if (mouse_hook_enabled) {
722 if (address == JOY0DAT) {
723 // Forward mouse valueses to Amyga.
724 unsigned short result = (mouse_dy << 8) | (mouse_dx);
725 return (unsigned int)result;
727 /*if (address == CIAAPRA) {
728 unsigned short result = (unsigned int)read16((uint32_t)address);
729 if (mouse_buttons & 0x01) {
730 return (unsigned int)(result | 0x40);
733 return (unsigned int)result;
735 if (address == POTGOR) {
736 unsigned short result = (unsigned int)read16((uint32_t)address);
737 // bit 1 rmb, bit 2 mmb
738 if (mouse_buttons & 0x06) {
739 return (unsigned int)((result ^ ((mouse_buttons & 0x02) << 9)) // move rmb to bit 10
740 & (result ^ ((mouse_buttons & 0x04) << 6))); // move mmb to bit 8
742 return (unsigned int)(result & 0xfffd);
746 if (address & 0xFF000000)
749 if (address & 0x01) {
750 return ((read8(address) << 8) | read8(address + 1));
752 return (unsigned int)read16((uint32_t)address);
755 unsigned int m68k_read_memory_32(unsigned int address) {
756 PLATFORM_CHECK_READ(OP_TYPE_LONGWORD);
758 /*if (m68k_get_reg(NULL, M68K_REG_PC) >= 0x080032F0 && m68k_get_reg(NULL, M68K_REG_PC) <= 0x080032F0 + 0x4000) {
759 stop_cpu_emulation(1);
762 /*if (address >= 0xE90000 && address < 0xF00000) {
763 printf("LONGWORD read from DMAC @%.8X:", address);
764 uint32_t v = cdtv_dmac_read(address & 0xFFFF, OP_TYPE_LONGWORD);
767 cpu_emulation_running = 0;
771 if (address & 0xFF000000)
774 if (address & 0x01) {
775 uint32_t c = read8(address);
776 c |= (be16toh(read16(address+1)) << 8);
777 c |= (read8(address + 3) << 24);
780 uint16_t a = read16(address);
781 uint16_t b = read16(address + 2);
782 return (a << 16) | b;
785 #define PLATFORM_CHECK_WRITE(a) \
786 if (address >= cfg->custom_low && address < cfg->custom_high) { \
787 switch(cfg->platform->id) { \
788 case PLATFORM_AMIGA: { \
789 if (address >= PISCSI_OFFSET && address < PISCSI_UPPER) { \
790 handle_piscsi_write(address, value, a); \
792 if (address >= PINET_OFFSET && address < PINET_UPPER) { \
793 handle_pinet_write(address, value, a); \
795 if (address >= PIGFX_RTG_BASE && address < PIGFX_UPPER) { \
796 rtg_write((address & 0x0FFFFFFF), value, a); \
799 if (custom_write_amiga(cfg, address, value, a) != -1) { \
808 if (address >= cfg->mapped_low && address < cfg->mapped_high) { \
809 if (handle_mapped_write(cfg, address, value, a) != -1) \
813 void m68k_write_memory_8(unsigned int address, unsigned int value) {
814 PLATFORM_CHECK_WRITE(OP_TYPE_BYTE);
816 /*if (address >= 0xE90000 && address < 0xF00000) {
817 printf("BYTE write to DMAC @%.8X: %.2X\n", address, value);
818 cdtv_dmac_write(address & 0xFFFF, value, OP_TYPE_BYTE);
820 cpu_emulation_running = 0;
824 if (address == 0xbfe001) {
825 if (ovl != (value & (1 << 0))) {
826 ovl = (value & (1 << 0));
827 printf("OVL:%x\n", ovl);
831 if (address & 0xFF000000)
834 write8((uint32_t)address, value);
838 void m68k_write_memory_16(unsigned int address, unsigned int value) {
839 PLATFORM_CHECK_WRITE(OP_TYPE_WORD);
841 /*if (address >= 0xE90000 && address < 0xF00000) {
842 printf("WORD write to DMAC @%.8X: %.4X\n", address, value);
843 cdtv_dmac_write(address & 0xFFFF, value, OP_TYPE_WORD);
845 cpu_emulation_running = 0;
849 if (address == 0xDFF030) {
850 char *serdat = (char *)&value;
851 // SERDAT word. see amiga dev docs appendix a; upper byte is control codes, and bit 0 is always 1.
852 // ignore this upper byte as it's not viewable data, only display lower byte.
853 printf("%c", serdat[0]);
855 if (address == 0xDFF09A) {
856 if (!(value & 0x8000)) {
861 else if (value & 0x04) {
866 if (address & 0xFF000000)
870 printf("Unaligned WORD write!\n");
872 write16((uint32_t)address, value);
876 void m68k_write_memory_32(unsigned int address, unsigned int value) {
877 PLATFORM_CHECK_WRITE(OP_TYPE_LONGWORD);
879 /*if (address >= 0xE90000 && address < 0xF00000) {
880 printf("LONGWORD write to DMAC @%.8X: %.8X\n", address, value);
881 cdtv_dmac_write(address & 0xFFFF, value, OP_TYPE_LONGWORD);
883 cpu_emulation_running = 0;
887 if (address & 0xFF000000)
891 printf("Unaligned LONGWORD write!\n");
893 write16(address, value >> 16);
894 write16(address + 2, value);