1 // SPDX-License-Identifier: MIT
5 #include "platforms/platforms.h"
6 #include "input/input.h"
8 #include "platforms/amiga/Gayle.h"
9 #include "platforms/amiga/amiga-registers.h"
10 #include "platforms/amiga/rtg/rtg.h"
11 #include "platforms/amiga/hunk-reloc.h"
12 #include "platforms/amiga/piscsi/piscsi.h"
13 #include "platforms/amiga/piscsi/piscsi-enums.h"
14 #include "platforms/amiga/net/pi-net.h"
15 #include "platforms/amiga/net/pi-net-enums.h"
16 #include "platforms/amiga/pistorm-dev/pistorm-dev.h"
17 #include "gpio/ps_protocol.h"
31 #include <sys/ioctl.h>
34 #include <sys/types.h>
37 #define KEY_POLL_INTERVAL_MSEC 5000
39 unsigned char read_ranges;
40 unsigned int read_addr[8];
41 unsigned int read_upper[8];
42 unsigned char *read_data[8];
43 unsigned char write_ranges;
44 unsigned int write_addr[8];
45 unsigned int write_upper[8];
46 unsigned char *write_data[8];
48 int kb_hook_enabled = 0;
49 int mouse_hook_enabled = 0;
50 int cpu_emulation_running = 1;
52 uint8_t mouse_dx = 0, mouse_dy = 0;
53 uint8_t mouse_buttons = 0;
54 uint8_t mouse_extra = 0;
56 extern uint8_t gayle_int;
57 extern uint8_t gayle_ide_enabled;
58 extern uint8_t gayle_emulation_enabled;
59 extern uint8_t gayle_a4k_int;
60 extern volatile unsigned int *gpio;
61 extern volatile uint16_t srdata;
62 extern uint8_t realtime_graphics_debug;
63 extern uint8_t rtg_on;
64 uint8_t realtime_disassembly, int2_enabled = 0;
65 uint32_t do_disasm = 0, old_level;
66 uint32_t last_irq = 8, last_last_irq = 8;
68 uint8_t end_signal = 0, load_new_config = 0;
70 char disasm_buf[4096];
72 #define KICKBASE 0xF80000
73 #define KICKSIZE 0x7FFFF
75 int mem_fd, mouse_fd = -1, keyboard_fd = -1;
84 extern m68ki_cpu_core m68ki_cpu;
85 extern int m68ki_initial_cycles;
86 extern int m68ki_remaining_cycles;
88 #define M68K_SET_IRQ(i) old_level = CPU_INT_LEVEL; \
89 CPU_INT_LEVEL = (i << 8); \
90 if(old_level != 0x0700 && CPU_INT_LEVEL == 0x0700) \
91 m68ki_cpu.nmi_pending = TRUE;
92 #define M68K_END_TIMESLICE m68ki_initial_cycles = GET_CYCLES(); \
95 #define M68K_SET_IRQ m68k_set_irq
96 #define M68K_END_TIMESLICE m68k_end_timeslice()
99 #define NOP asm("nop"); asm("nop"); asm("nop"); asm("nop");
101 #define DEBUG_EMULATOR
102 #ifdef DEBUG_EMULATOR
108 // Configurable emulator options
109 unsigned int cpu_type = M68K_CPU_TYPE_68000;
110 unsigned int loop_cycles = 300, irq_status = 0;
111 struct emulator_config *cfg = NULL;
112 char keyboard_file[256] = "/dev/input/event1";
114 uint64_t trig_irq = 0, serv_irq = 0;
115 uint16_t irq_delay = 0;
116 unsigned int amiga_reset=0, amiga_reset_last=0;
117 unsigned int do_reset=0;
119 void *ipl_task(void *args) {
120 printf("IPL thread running\n");
121 uint16_t old_irq = 0;
125 value = *(gpio + 13);
127 if (!(value & (1 << PIN_IPL_ZERO))) {
150 amiga_reset=(value & (1 << PIN_RESET));
151 if(amiga_reset!=amiga_reset_last)
153 amiga_reset_last=amiga_reset;
156 printf("Amiga Reset is down...\n");
162 printf("Amiga Reset is up...\n");
167 /*if (gayle_ide_enabled) {
168 if (((gayle_int & 0x80) || gayle_a4k_int) && (get_ide(0)->drive[0].intrq || get_ide(0)->drive[1].intrq)) {
169 //get_ide(0)->drive[0].intrq = 0;
178 NOP NOP NOP NOP NOP NOP NOP NOP
179 //NOP NOP NOP NOP NOP NOP NOP NOP
180 //NOP NOP NOP NOP NOP NOP NOP NOP
181 /*NOP NOP NOP NOP NOP NOP NOP NOP
182 NOP NOP NOP NOP NOP NOP NOP NOP
183 NOP NOP NOP NOP NOP NOP NOP NOP*/
192 if (mouse_hook_enabled) {
193 get_mouse_status(&mouse_dx, &mouse_dy, &mouse_buttons, &mouse_extra);
196 if (realtime_disassembly && (do_disasm || cpu_emulation_running)) {
197 m68k_disassemble(disasm_buf, m68k_get_reg(NULL, M68K_REG_PC), cpu_type);
198 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), \
199 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));
200 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), \
201 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));
202 printf("%.8X (%.8X)]] %s\n", m68k_get_reg(NULL, M68K_REG_PC), (m68k_get_reg(NULL, M68K_REG_PC) & 0xFFFFFF), disasm_buf);
208 if (cpu_emulation_running)
209 m68k_execute(loop_cycles);
214 last_irq = ((read_reg() & 0xe000) >> 13);
215 if (last_irq != last_last_irq) {
216 last_last_irq = last_irq;
217 M68K_SET_IRQ(last_irq);
221 if (gayleirq && int2_enabled) {
222 write16(0xdff09c, 0x8000 | (1 << 3) && last_irq != 2);
223 last_last_irq = last_irq;
234 last_last_irq = last_irq;
241 usleep(1000000); // 1sec
243 // while(amiga_reset==0);
244 // printf("CPU emulation reset.\n");
247 if (mouse_hook_enabled && (mouse_extra != 0x00)) {
248 // mouse wheel events have occurred; unlike l/m/r buttons, these are queued as keypresses, so add to end of buffer
249 switch (mouse_extra) {
252 queue_keypress(0xfe, KEYPRESS_PRESS, PLATFORM_AMIGA);
256 queue_keypress(0xff, KEYPRESS_PRESS, PLATFORM_AMIGA);
260 // dampen the scroll wheel until next while loop iteration
264 if (load_new_config) {
265 printf("[CPU] Loading new config file.\n");
266 goto stop_cpu_emulation;
270 goto stop_cpu_emulation;
275 printf("[CPU] End of CPU thread\n");
279 void *keyboard_task() {
280 struct pollfd kbdpoll[1];
282 char c = 0, c_code = 0, c_type = 0;
283 char grab_message[] = "[KBD] Grabbing keyboard from input layer\n",
284 ungrab_message[] = "[KBD] Ungrabbing keyboard\n";
286 printf("[KBD] Keyboard thread started\n");
288 // because we permit the keyboard to be grabbed on startup, quickly check if we need to grab it
289 if (kb_hook_enabled && cfg->keyboard_grab) {
290 printf(grab_message);
291 grab_device(keyboard_fd);
294 kbdpoll[0].fd = keyboard_fd;
295 kbdpoll[0].events = POLLIN;
298 kpollrc = poll(kbdpoll, 1, KEY_POLL_INTERVAL_MSEC);
299 if ((kpollrc > 0) && (kbdpoll[0].revents & POLLHUP)) {
300 // in the event that a keyboard is unplugged, keyboard_task will whiz up to 100% utilisation
301 // this is undesired, so if the keyboard HUPs, end the thread without ending the emulation
302 printf("[KBD] Keyboard node returned HUP (unplugged?)\n");
306 // if kpollrc > 0 then it contains number of events to pull, also check if POLLIN is set in revents
307 if ((kpollrc <= 0) || !(kbdpoll[0].revents & POLLIN)) {
311 while (get_key_char(&c, &c_code, &c_type)) {
312 if (c && c == cfg->keyboard_toggle_key && !kb_hook_enabled) {
314 printf("[KBD] Keyboard hook enabled.\n");
315 if (cfg->keyboard_grab) {
316 grab_device(keyboard_fd);
317 printf(grab_message);
319 } else if (kb_hook_enabled) {
320 if (c == 0x1B && c_type) {
322 printf("[KBD] Keyboard hook disabled.\n");
323 if (cfg->keyboard_grab) {
324 release_device(keyboard_fd);
325 printf(ungrab_message);
328 if (queue_keypress(c_code, c_type, cfg->platform->id) && int2_enabled && last_irq != 2) {
335 // pause pressed; trigger nmi (int level 7)
336 if (c == 0x01 && c_type) {
337 printf("[INT] Sending NMI\n");
341 if (!kb_hook_enabled && c_type) {
342 if (c && c == cfg->mouse_toggle_key) {
343 mouse_hook_enabled ^= 1;
344 printf("Mouse hook %s.\n", mouse_hook_enabled ? "enabled" : "disabled");
345 mouse_dx = mouse_dy = mouse_buttons = mouse_extra = 0;
348 cpu_emulation_running ^= 1;
349 printf("CPU emulation is now %s\n", cpu_emulation_running ? "running" : "stopped");
352 realtime_graphics_debug ^= 1;
353 printf("Real time graphics debug is now %s\n", realtime_graphics_debug ? "on" : "off");
357 //m68k_pulse_reset();
358 printf("CPU emulation reset.\n");
361 printf("Quitting and exiting emulator.\n");
366 realtime_disassembly ^= 1;
368 printf("Real time disassembly is now %s\n", realtime_disassembly ? "on" : "off");
371 int r = get_mapped_item_by_address(cfg, 0x08000000);
373 printf("Dumping first 16MB of mapped range %d.\n", r);
374 FILE *dmp = fopen("./memdmp.bin", "wb+");
375 fwrite(cfg->map_data[r], 16 * SIZE_MEGA, 1, dmp);
379 if (c == 's' && realtime_disassembly) {
382 if (c == 'S' && realtime_disassembly) {
391 printf("[KBD] Keyboard thread ending\n");
392 if (cfg->keyboard_grab) {
393 printf(ungrab_message);
394 release_device(keyboard_fd);
399 void stop_cpu_emulation(uint8_t disasm_cur) {
402 m68k_disassemble(disasm_buf, m68k_get_reg(NULL, M68K_REG_PC), cpu_type);
403 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), \
404 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));
405 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), \
406 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));
407 printf("%.8X (%.8X)]] %s\n", m68k_get_reg(NULL, M68K_REG_PC), (m68k_get_reg(NULL, M68K_REG_PC) & 0xFFFFFF), disasm_buf);
408 realtime_disassembly = 1;
411 cpu_emulation_running = 0;
416 static volatile unsigned char maprom;
418 void sigint_handler(int sig_num) {
420 //cpu_emulation_running = 0;
423 printf("Received sigint %d, exiting.\n", sig_num);
429 if (cfg->platform->shutdown) {
430 cfg->platform->shutdown(cfg);
433 printf("IRQs triggered: %lld\n", trig_irq);
434 printf("IRQs serviced: %lld\n", serv_irq);
439 int main(int argc, char *argv[]) {
441 //const struct sched_param priority = {99};
443 // Some command line switch stuffles
444 for (g = 1; g < argc; g++) {
445 if (strcmp(argv[g], "--cpu_type") == 0 || strcmp(argv[g], "--cpu") == 0) {
447 printf("%s switch found, but no CPU type specified.\n", argv[g]);
450 cpu_type = get_m68k_cpu_type(argv[g]);
453 else if (strcmp(argv[g], "--config-file") == 0 || strcmp(argv[g], "--config") == 0) {
455 printf("%s switch found, but no config filename specified.\n", argv[g]);
458 cfg = load_config_file(argv[g]);
461 else if (strcmp(argv[g], "--keyboard-file") == 0 || strcmp(argv[g], "--kbfile") == 0) {
463 printf("%s switch found, but no keyboard device path specified.\n", argv[g]);
466 strcpy(keyboard_file, argv[g]);
472 if (load_new_config) {
474 free_config_file(cfg);
480 cfg = load_config_file(get_pistorm_devcfg_filename());
484 printf("No config file specified. Trying to load default.cfg...\n");
485 cfg = load_config_file("default.cfg");
487 printf("Couldn't load default.cfg, empty emulator config will be used.\n");
488 cfg = (struct emulator_config *)calloc(1, sizeof(struct emulator_config));
490 printf("Failed to allocate memory for emulator config!\n");
493 memset(cfg, 0x00, sizeof(struct emulator_config));
498 if (cfg->cpu_type) cpu_type = cfg->cpu_type;
499 if (cfg->loop_cycles) loop_cycles = cfg->loop_cycles;
502 cfg->platform = make_platform_config("none", "generic");
503 cfg->platform->platform_initial_setup(cfg);
506 if (cfg->mouse_enabled) {
507 mouse_fd = open(cfg->mouse_file, O_RDWR | O_NONBLOCK);
508 if (mouse_fd == -1) {
509 printf("Failed to open %s, can't enable mouse hook.\n", cfg->mouse_file);
510 cfg->mouse_enabled = 0;
513 * *-*-*-* magic numbers! *-*-*-*
514 * great, so waaaay back in the history of the pc, the ps/2 protocol set the standard for mice
515 * and in the process, the mouse sample rate was defined as a way of putting mice into vendor-specific modes.
516 * as the ancient gpm command explains, almost everything except incredibly old mice talk the IntelliMouse
517 * protocol, which reports four bytes. by default, every mouse starts in 3-byte mode (don't report wheel or
518 * additional buttons) until imps2 magic is sent. so, command $f3 is "set sample rate", followed by a byte.
520 uint8_t mouse_init[] = { 0xf4, 0xf3, 0x64 }; // enable, then set sample rate 100
521 uint8_t imps2_init[] = { 0xf3, 0xc8, 0xf3, 0x64, 0xf3, 0x50 }; // magic sequence; set sample 200, 100, 80
522 if (write(mouse_fd, mouse_init, sizeof(mouse_init)) != -1) {
523 if (write(mouse_fd, imps2_init, sizeof(imps2_init)) == -1)
524 printf("[MOUSE] Couldn't enable scroll wheel events; is this mouse from the 1980s?\n");
526 printf("[MOUSE] Mouse didn't respond to normal PS/2 init; have you plugged a brick in by mistake?\n");
530 if (cfg->keyboard_file)
531 keyboard_fd = open(cfg->keyboard_file, O_RDONLY | O_NONBLOCK);
533 keyboard_fd = open(keyboard_file, O_RDONLY | O_NONBLOCK);
535 if (keyboard_fd == -1) {
536 printf("Failed to open keyboard event source.\n");
539 if (cfg->mouse_autoconnect)
540 mouse_hook_enabled = 1;
542 if (cfg->keyboard_autoconnect)
547 signal(SIGINT, sigint_handler);
550 //goto skip_everything;
552 // Enable 200MHz CLK output on GPIO4, adjust divider and pll source depending
554 printf("Enable 200MHz GPCLK0 on GPIO4\n");
555 gpio_enable_200mhz();
557 // reset cpld statemachine first
565 // reset amiga and statemachine
571 printf("Setting CPU type to %d.\n", cpu_type);
572 m68k_set_cpu_type(cpu_type);
576 m68k_set_reg(M68K_REG_PC, 0xF80002);
578 m68k_set_reg(M68K_REG_PC, 0x0);
581 ps_reset_state_machine();
586 printf("Setting CPU type to %d.\n", cpu_type);
587 m68k_set_cpu_type(cpu_type);
590 pthread_t ipl_tid, cpu_tid, kbd_tid;
592 err = pthread_create(&ipl_tid, NULL, &ipl_task, NULL);
594 printf("[ERROR] Cannot create IPL thread: [%s]", strerror(err));
596 pthread_setname_np(ipl_tid, "pistorm: ipl");
597 printf("IPL thread created successfully\n");
600 // create keyboard task
601 err = pthread_create(&kbd_tid, NULL, &keyboard_task, NULL);
603 printf("[ERROR] Cannot create keyboard thread: [%s]", strerror(err));
605 pthread_setname_np(kbd_tid, "pistorm: kbd");
606 printf("[MAIN] Keyboard thread created successfully\n");
610 err = pthread_create(&cpu_tid, NULL, &cpu_task, NULL);
612 printf("[ERROR] Cannot create CPU thread: [%s]", strerror(err));
614 pthread_setname_np(cpu_tid, "pistorm: cpu");
615 printf("[MAIN] CPU thread created successfully\n");
618 // wait for cpu task to end before closing up and finishing
619 pthread_join(cpu_tid, NULL);
621 if (!load_new_config)
622 printf("[MAIN] All threads appear to have concluded; ending process\n");
632 if (cfg->platform->shutdown) {
633 cfg->platform->shutdown(cfg);
639 void cpu_pulse_reset(void) {
642 // printf("Status Reg%x\n",read_reg());
645 // printf("Status Reg%x\n",read_reg());
646 if (cfg->platform->handle_reset)
647 cfg->platform->handle_reset(cfg);
649 //m68k_write_memory_16(INTENA, 0x7FFF);
651 m68k_write_memory_8(0xbfe201, 0x0001); // AMIGA OVL
652 m68k_write_memory_8(0xbfe001, 0x0001); // AMIGA OVL high (ROM@0x0)
657 int cpu_irq_ack(int level) {
658 printf("cpu irq ack\n");
662 static unsigned int target = 0;
663 static uint8_t send_keypress = 0;
665 uint8_t cdtv_dmac_reg_idx_read();
666 void cdtv_dmac_reg_idx_write(uint8_t value);
667 uint32_t cdtv_dmac_read(uint32_t address, uint8_t type);
668 void cdtv_dmac_write(uint32_t address, uint32_t value, uint8_t type);
670 #define PLATFORM_CHECK_READ(a) \
671 if (address >= cfg->custom_low && address < cfg->custom_high) { \
672 unsigned int target = 0; \
673 switch(cfg->platform->id) { \
674 case PLATFORM_AMIGA: { \
675 if (address >= PISCSI_OFFSET && address < PISCSI_UPPER) { \
676 return handle_piscsi_read(address, a); \
678 if (address >= PINET_OFFSET && address < PINET_UPPER) { \
679 return handle_pinet_read(address, a); \
681 if (address >= PIGFX_RTG_BASE && address < PIGFX_UPPER) { \
682 return rtg_read((address & 0x0FFFFFFF), a); \
684 if (custom_read_amiga(cfg, address, &target, a) != -1) { \
693 if (ovl || (address >= cfg->mapped_low && address < cfg->mapped_high)) { \
694 if (handle_mapped_read(cfg, address, &target, a) != -1) \
698 unsigned int m68k_read_memory_8(unsigned int address) {
699 PLATFORM_CHECK_READ(OP_TYPE_BYTE);
701 /*if (address >= 0xE90000 && address < 0xF00000) {
702 printf("BYTE read from DMAC @%.8X:", address);
703 uint32_t v = cdtv_dmac_read(address & 0xFFFF, OP_TYPE_BYTE);
706 cpu_emulation_running = 0;
710 /*if (m68k_get_reg(NULL, M68K_REG_PC) >= 0x080032F0 && m68k_get_reg(NULL, M68K_REG_PC) <= 0x080032F0 + 0x4000) {
711 stop_cpu_emulation(1);
715 if (address & 0xFF000000)
718 unsigned char result = (unsigned int)read8((uint32_t)address);
720 if (mouse_hook_enabled) {
721 if (address == CIAAPRA) {
722 if (mouse_buttons & 0x01) {
723 //mouse_buttons -= 1;
724 return (unsigned int)(result ^ 0x40);
727 return (unsigned int)result;
731 if (kb_hook_enabled) {
732 if (address == CIAAICR) {
733 if (get_num_kb_queued() && (!send_keypress || send_keypress == 1)) {
738 if (send_keypress == 2) {
744 if (address == CIAADAT) {
745 //if (send_keypress) {
746 uint8_t c = 0, t = 0;
747 pop_queued_key(&c, &t);
749 result = ((c << 1) | t) ^ 0xFF;
760 unsigned int m68k_read_memory_16(unsigned int address) {
761 PLATFORM_CHECK_READ(OP_TYPE_WORD);
763 /*if (m68k_get_reg(NULL, M68K_REG_PC) >= 0x080032F0 && m68k_get_reg(NULL, M68K_REG_PC) <= 0x080032F0 + 0x4000) {
764 stop_cpu_emulation(1);
767 /*if (address >= 0xE90000 && address < 0xF00000) {
768 printf("WORD read from DMAC @%.8X:", address);
769 uint32_t v = cdtv_dmac_read(address & 0xFFFF, OP_TYPE_WORD);
772 cpu_emulation_running = 0;
776 if (mouse_hook_enabled) {
777 if (address == JOY0DAT) {
778 // Forward mouse valueses to Amyga.
779 unsigned short result = (mouse_dy << 8) | (mouse_dx);
780 return (unsigned int)result;
782 /*if (address == CIAAPRA) {
783 unsigned short result = (unsigned int)read16((uint32_t)address);
784 if (mouse_buttons & 0x01) {
785 return (unsigned int)(result | 0x40);
788 return (unsigned int)result;
790 if (address == POTGOR) {
791 unsigned short result = (unsigned int)read16((uint32_t)address);
792 // bit 1 rmb, bit 2 mmb
793 if (mouse_buttons & 0x06) {
794 return (unsigned int)((result ^ ((mouse_buttons & 0x02) << 9)) // move rmb to bit 10
795 & (result ^ ((mouse_buttons & 0x04) << 6))); // move mmb to bit 8
797 return (unsigned int)(result & 0xfffd);
801 if (address & 0xFF000000)
804 if (address & 0x01) {
805 return ((read8(address) << 8) | read8(address + 1));
807 return (unsigned int)read16((uint32_t)address);
810 unsigned int m68k_read_memory_32(unsigned int address) {
811 PLATFORM_CHECK_READ(OP_TYPE_LONGWORD);
813 /*if (m68k_get_reg(NULL, M68K_REG_PC) >= 0x080032F0 && m68k_get_reg(NULL, M68K_REG_PC) <= 0x080032F0 + 0x4000) {
814 stop_cpu_emulation(1);
817 /*if (address >= 0xE90000 && address < 0xF00000) {
818 printf("LONGWORD read from DMAC @%.8X:", address);
819 uint32_t v = cdtv_dmac_read(address & 0xFFFF, OP_TYPE_LONGWORD);
822 cpu_emulation_running = 0;
826 if (address & 0xFF000000)
829 if (address & 0x01) {
830 uint32_t c = read8(address);
831 c |= (be16toh(read16(address+1)) << 8);
832 c |= (read8(address + 3) << 24);
835 uint16_t a = read16(address);
836 uint16_t b = read16(address + 2);
837 return (a << 16) | b;
840 #define PLATFORM_CHECK_WRITE(a) \
841 if (address >= cfg->custom_low && address < cfg->custom_high) { \
842 switch(cfg->platform->id) { \
843 case PLATFORM_AMIGA: { \
844 if (address >= PISCSI_OFFSET && address < PISCSI_UPPER) { \
845 handle_piscsi_write(address, value, a); \
847 if (address >= PINET_OFFSET && address < PINET_UPPER) { \
848 handle_pinet_write(address, value, a); \
850 if (address >= PIGFX_RTG_BASE && address < PIGFX_UPPER) { \
851 rtg_write((address & 0x0FFFFFFF), value, a); \
854 if (custom_write_amiga(cfg, address, value, a) != -1) { \
863 if (address >= cfg->mapped_low && address < cfg->mapped_high) { \
864 if (handle_mapped_write(cfg, address, value, a) != -1) \
868 void m68k_write_memory_8(unsigned int address, unsigned int value) {
869 PLATFORM_CHECK_WRITE(OP_TYPE_BYTE);
871 /*if (address >= 0xE90000 && address < 0xF00000) {
872 printf("BYTE write to DMAC @%.8X: %.2X\n", address, value);
873 cdtv_dmac_write(address & 0xFFFF, value, OP_TYPE_BYTE);
875 cpu_emulation_running = 0;
879 if (address == 0xbfe001) {
880 if (ovl != (value & (1 << 0))) {
881 ovl = (value & (1 << 0));
882 printf("OVL:%x\n", ovl);
886 if (address & 0xFF000000)
889 write8((uint32_t)address, value);
893 void m68k_write_memory_16(unsigned int address, unsigned int value) {
894 PLATFORM_CHECK_WRITE(OP_TYPE_WORD);
896 /*if (address >= 0xE90000 && address < 0xF00000) {
897 printf("WORD write to DMAC @%.8X: %.4X\n", address, value);
898 cdtv_dmac_write(address & 0xFFFF, value, OP_TYPE_WORD);
900 cpu_emulation_running = 0;
904 if (address == 0xDFF030) {
905 char *serdat = (char *)&value;
906 // SERDAT word. see amiga dev docs appendix a; upper byte is control codes, and bit 0 is always 1.
907 // ignore this upper byte as it's not viewable data, only display lower byte.
908 printf("%c", serdat[0]);
910 if (address == 0xDFF09A) {
911 if (!(value & 0x8000)) {
916 else if (value & 0x04) {
921 if (address & 0xFF000000)
925 printf("Unaligned WORD write!\n");
927 write16((uint32_t)address, value);
931 void m68k_write_memory_32(unsigned int address, unsigned int value) {
932 PLATFORM_CHECK_WRITE(OP_TYPE_LONGWORD);
934 /*if (address >= 0xE90000 && address < 0xF00000) {
935 printf("LONGWORD write to DMAC @%.8X: %.8X\n", address, value);
936 cdtv_dmac_write(address & 0xFFFF, value, OP_TYPE_LONGWORD);
938 cpu_emulation_running = 0;
942 if (address & 0xFF000000)
946 printf("Unaligned LONGWORD write!\n");
948 write16(address, value >> 16);
949 write16(address + 2, value);