int mouse_hook_enabled = 0;
int cpu_emulation_running = 1;
-char mouse_dx = 0, mouse_dy = 0;
-char mouse_buttons = 0;
+uint8_t mouse_dx = 0, mouse_dy = 0;
+uint8_t mouse_buttons = 0;
+uint8_t mouse_extra = 0;
extern uint8_t gayle_int;
extern uint8_t gayle_ide_enabled;
#define NOP asm("nop"); asm("nop"); asm("nop"); asm("nop");
+ #define DEBUG_EMULATOR
+ #ifdef DEBUG_EMULATOR
+ #define DEBUG printf
+ #else
+ #define DEBUG(...)
+ #endif
+
// Configurable emulator options
unsigned int cpu_type = M68K_CPU_TYPE_68000;
unsigned int loop_cycles = 300, irq_status = 0;
char keyboard_file[256] = "/dev/input/event1";
uint64_t trig_irq = 0, serv_irq = 0;
+ uint16_t irq_delay = 0;
void *iplThread(void *args) {
printf("IPL thread running\n");
+ uint16_t old_irq = 0;
+ uint32_t value;
while (1) {
- if (!gpio_get_irq()) {
+ value = *(gpio + 13);
+
+ if (!(value & (1 << PIN_IPL_ZERO))) {
irq = 1;
+ old_irq = irq_delay;
+ NOP
M68K_END_TIMESLICE;
}
else {
- irq = 0;
+ if (irq) {
+ if (old_irq) {
+ old_irq--;
+ }
+ else {
+ irq = 0;
+ }
+ NOP
+ M68K_END_TIMESLICE;
+ }
}
if (gayle_ide_enabled) {
gayleirq = 0;
}
//usleep(0);
- NOP NOP NOP NOP NOP NOP
- NOP NOP NOP NOP NOP NOP
- NOP NOP NOP NOP NOP NOP
- NOP NOP NOP NOP NOP NOP
- NOP NOP NOP NOP NOP NOP
- NOP NOP NOP NOP NOP NOP
- NOP NOP NOP NOP NOP NOP
- NOP NOP NOP NOP NOP NOP
- NOP NOP NOP NOP NOP NOP
- NOP NOP NOP NOP NOP NOP
- NOP NOP NOP NOP NOP NOP
- NOP NOP NOP NOP NOP NOP
+ NOP NOP NOP NOP NOP NOP NOP NOP
+ NOP NOP NOP NOP NOP NOP NOP NOP
+ NOP NOP NOP NOP NOP NOP NOP NOP
+ /*NOP NOP NOP NOP NOP NOP NOP NOP
+ NOP NOP NOP NOP NOP NOP NOP NOP
+ NOP NOP NOP NOP NOP NOP NOP NOP*/
}
return args;
}
int g;
//const struct sched_param priority = {99};
+ if (argc > 1) {
+ irq_delay = atoi(argv[1]);
+ printf("Setting IRQ delay to %d loops (%s).\n", irq_delay, argv[1]);
+ }
+
// Some command line switch stuffles
for (g = 1; g < argc; g++) {
if (strcmp(argv[g], "--cpu_type") == 0 || strcmp(argv[g], "--cpu") == 0) {
}
if (cfg->mouse_enabled) {
- mouse_fd = open(cfg->mouse_file, O_RDONLY | O_NONBLOCK);
+ mouse_fd = open(cfg->mouse_file, O_RDWR | O_NONBLOCK);
if (mouse_fd == -1) {
printf("Failed to open %s, can't enable mouse hook.\n", cfg->mouse_file);
cfg->mouse_enabled = 0;
+ } else {
+ /**
+ * *-*-*-* magic numbers! *-*-*-*
+ * great, so waaaay back in the history of the pc, the ps/2 protocol set the standard for mice
+ * and in the process, the mouse sample rate was defined as a way of putting mice into vendor-specific modes.
+ * as the ancient gpm command explains, almost everything except incredibly old mice talk the IntelliMouse
+ * protocol, which reports four bytes. by default, every mouse starts in 3-byte mode (don't report wheel or
+ * additional buttons) until imps2 magic is sent. so, command $f3 is "set sample rate", followed by a byte.
+ */
+ uint8_t mouse_init[] = { 0xf4, 0xf3, 0x64 }; // enable, then set sample rate 100
+ uint8_t imps2_init[] = { 0xf3, 0xc8, 0xf3, 0x64, 0xf3, 0x50 }; // magic sequence; set sample 200, 100, 80
+ if (write(mouse_fd, mouse_init, sizeof(mouse_init)) != -1) {
+ if (write(mouse_fd, imps2_init, sizeof(imps2_init)) == -1)
+ printf("[MOUSE] Couldn't enable scroll wheel events; is this mouse from the 1980s?\n");
+ } else
+ printf("[MOUSE] Mouse didn't respond to normal PS/2 init; have you plugged a brick in by mistake?\n");
}
}
cpu_pulse_reset();
char c = 0, c_code = 0, c_type = 0;
- uint32_t last_irq = 0;
+ uint32_t last_irq = 0, last_last_irq = 0;
pthread_t id;
int err;
m68k_pulse_reset();
while (42) {
if (mouse_hook_enabled) {
- get_mouse_status(&mouse_dx, &mouse_dy, &mouse_buttons);
+ get_mouse_status(&mouse_dx, &mouse_dy, &mouse_buttons, &mouse_extra);
}
if (realtime_disassembly && (do_disasm || cpu_emulation_running)) {
}
if (irq) {
- unsigned int status = read_reg();
- if (((status & 0xe000) >> 13) != last_irq) {
- last_irq = ((status & 0xe000) >> 13);
- serv_irq++;
- M68K_SET_IRQ(last_irq);
+ while (irq) {
+ last_irq = ((read_reg() & 0xe000) >> 13);
+ if (last_irq != last_last_irq) {
+ last_last_irq = last_irq;
+ M68K_SET_IRQ(last_irq);
+ }
+ m68k_execute(5);
}
+ if (gayleirq && int2_enabled) {
+ write16(0xdff09c, 0x8000 | (1 << 3) && last_irq != 2);
+ last_last_irq = last_irq;
+ last_irq = 2;
+ M68K_SET_IRQ(2);
+ }
+ M68K_SET_IRQ(0);
+ last_last_irq = 0;
}
- else if (gayleirq && int2_enabled) {
- write16(0xdff09c, 0x8000 | (1 << 3));
- last_irq = 2;
- M68K_SET_IRQ(2);
- }
- else {
+ /*else {
if (last_irq != 0) {
- last_irq = 0;
M68K_SET_IRQ(0);
+ last_last_irq = last_irq;
+ last_irq = 0;
}
- }
+ }*/
while (get_key_char(&c, &c_code, &c_type)) {
if (c && c == cfg->keyboard_toggle_key && !kb_hook_enabled) {
printf("unknown.\n");
break;
}*/
- if (queue_keypress(c_code, c_type, cfg->platform->id) && int2_enabled) {
- last_irq = 2;
- M68K_SET_IRQ(2);
+ if (queue_keypress(c_code, c_type, cfg->platform->id) && int2_enabled && last_irq != 2) {
+ //last_irq = 0;
+ //M68K_SET_IRQ(2);
}
}
}
+ // pause pressed; trigger nmi (int level 7)
+ if (c == 0x01 && c_type) {
+ printf("[INT] Sending NMI\n");
+ last_irq = 7;
+ M68K_SET_IRQ(7);
+ }
+
if (!kb_hook_enabled && c_type) {
if (c && c == cfg->mouse_toggle_key) {
mouse_hook_enabled ^= 1;
printf("Mouse hook %s.\n", mouse_hook_enabled ? "enabled" : "disabled");
- mouse_dx = mouse_dy = mouse_buttons = 0;
+ mouse_dx = mouse_dy = mouse_buttons = mouse_extra = 0;
}
if (c == 'r') {
cpu_emulation_running ^= 1;
}
}
}
+
+ if (mouse_hook_enabled && (mouse_extra != 0x00)) {
+ // mouse wheel events have occurred; unlike l/m/r buttons, these are queued as keypresses, so add to end of buffer
+ switch (mouse_extra) {
+ case 0xff:
+ // wheel up
+ queue_keypress(0xfe, KEYPRESS_PRESS, PLATFORM_AMIGA);
+ break;
+ case 0x01:
+ // wheel down
+ queue_keypress(0xff, KEYPRESS_PRESS, PLATFORM_AMIGA);
+ break;
+ }
+
+ // dampen the scroll wheel until next while loop iteration
+ mouse_extra = 0x00;
+ }
}
stop_cpu_emulation:;
if (cfg->platform->handle_reset)
cfg->platform->handle_reset(cfg);
+
+ m68k_write_memory_16(INTENA, 0x7FFF);
ovl = 1;
m68k_write_memory_8(0xbfe201, 0x0001); // AMIGA OVL
m68k_write_memory_8(0xbfe001, 0x0001); // AMIGA OVL high (ROM@0x0)
//mouse_buttons -= 1;
return (unsigned int)(result ^ 0x40);
}
- else
- return (unsigned int)result;
+
+ return (unsigned int)result;
}
}
+
if (kb_hook_enabled) {
if (address == CIAAICR) {
if (get_num_kb_queued() && (!send_keypress || send_keypress == 1)) {
send_keypress = 1;
}
if (send_keypress == 2) {
- // result |= 0x02;
+ //result |= 0x02;
send_keypress = 0;
}
return result;
}
if (address == CIAADAT) {
- if (send_keypress) {
+ //if (send_keypress) {
uint8_t c = 0, t = 0;
pop_queued_key(&c, &t);
t ^= 0x01;
result = ((c << 1) | t) ^ 0xFF;
send_keypress = 2;
- }
+ //M68K_SET_IRQ(0);
+ //}
return result;
}
}
}*/
if (address == POTGOR) {
unsigned short result = (unsigned int)read16((uint32_t)address);
- if (mouse_buttons & 0x02) {
- return (unsigned int)(result ^ (0x2 << 9));
+ // bit 1 rmb, bit 2 mmb
+ if (mouse_buttons & 0x06) {
+ return (unsigned int)((result ^ ((mouse_buttons & 0x02) << 9)) // move rmb to bit 10
+ & (result ^ ((mouse_buttons & 0x04) << 6))); // move mmb to bit 8
}
- else
- return (unsigned int)(result & 0xFFFD);
+ return (unsigned int)(result & 0xfffd);
}
}
}*/
if (address == 0xDFF030) {
- char *beb = (char *)&value;
- printf("%c%c", beb[1], beb[0]);
+ char *serdat = (char *)&value;
+ // SERDAT word. see amiga dev docs appendix a; upper byte is control codes, and bit 0 is always 1.
+ // ignore this upper byte as it's not viewable data, only display lower byte.
+ printf("%c", serdat[0]);
}
if (address == 0xDFF09A) {
if (!(value & 0x8000)) {
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