+#include "m68k.h"
+#include "emulator.h"
+#include "platforms/platforms.h"
+#include "input/input.h"
+
+#include "platforms/amiga/Gayle.h"
+#include "platforms/amiga/gayle-ide/ide.h"
+#include "platforms/amiga/amiga-registers.h"
+#include "platforms/amiga/rtg/rtg.h"
+#include "platforms/amiga/hunk-reloc.h"
+#include "platforms/amiga/piscsi/piscsi.h"
+#include "platforms/amiga/piscsi/piscsi-enums.h"
+#include "platforms/amiga/net/pi-net.h"
+#include "platforms/amiga/net/pi-net-enums.h"
+#include "gpio/ps_protocol.h"
+
#include <assert.h>
#include <dirent.h>
#include <endian.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
-#include <sys/ioctl.h>
-#include "m68k.h"
-#include "main.h"
-#include "platforms/platforms.h"
-#include "input/input.h"
-#include "platforms/amiga/Gayle.h"
-#include "platforms/amiga/gayle-ide/ide.h"
-#include "platforms/amiga/amiga-registers.h"
-#include "platforms/amiga/rtg/rtg.h"
-#include "platforms/amiga/hunk-reloc.h"
-#include "platforms/amiga/piscsi/piscsi.h"
-#include "platforms/amiga/piscsi/piscsi-enums.h"
-#include "platforms/amiga/net/pi-net.h"
-#include "platforms/amiga/net/pi-net-enums.h"
-#include "gpio/ps_protocol.h"
unsigned char read_ranges;
unsigned int read_addr[8];
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;
extern uint8_t realtime_graphics_debug;
uint8_t realtime_disassembly, int2_enabled = 0;
uint32_t do_disasm = 0, old_level;
+uint32_t last_irq = 0, last_last_irq = 0;
+char c = 0, c_code = 0, c_type = 0; // @todo temporary main/cpu_task scope workaround until input moved to a thread
char disasm_buf[4096];
#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) {
+void *ipl_task(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;
}
+void *cpu_task() {
+ m68k_pulse_reset();
+ while (42) {
+ if (mouse_hook_enabled) {
+ get_mouse_status(&mouse_dx, &mouse_dy, &mouse_buttons, &mouse_extra);
+ }
+
+ if (realtime_disassembly && (do_disasm || cpu_emulation_running)) {
+ m68k_disassemble(disasm_buf, m68k_get_reg(NULL, M68K_REG_PC), cpu_type);
+ 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), \
+ 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));
+ 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), \
+ 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));
+ printf("%.8X (%.8X)]] %s\n", m68k_get_reg(NULL, M68K_REG_PC), (m68k_get_reg(NULL, M68K_REG_PC) & 0xFFFFFF), disasm_buf);
+ if (do_disasm)
+ do_disasm--;
+ m68k_execute(1);
+ }
+ else {
+ if (cpu_emulation_running)
+ m68k_execute(loop_cycles);
+ }
+
+ if (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 (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) {
+ kb_hook_enabled = 1;
+ printf("Keyboard hook enabled.\n");
+ }
+ else if (kb_hook_enabled) {
+ if (c == 0x1B && c_type) {
+ kb_hook_enabled = 0;
+ printf("Keyboard hook disabled.\n");
+ }
+ else {
+ /*printf("Key code: %.2X - ", c_code);
+ switch (c_type) {
+ case 0:
+ printf("released.\n");
+ break;
+ case 1:
+ printf("pressed.\n");
+ break;
+ case 2:
+ printf("repeat.\n");
+ break;
+ default:
+ printf("unknown.\n");
+ break;
+ }*/
+ 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");
+ 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 = mouse_extra = 0;
+ }
+ if (c == 'r') {
+ cpu_emulation_running ^= 1;
+ printf("CPU emulation is now %s\n", cpu_emulation_running ? "running" : "stopped");
+ }
+ if (c == 'g') {
+ realtime_graphics_debug ^= 1;
+ printf("Real time graphics debug is now %s\n", realtime_graphics_debug ? "on" : "off");
+ }
+ if (c == 'R') {
+ cpu_pulse_reset();
+ //m68k_pulse_reset();
+ printf("CPU emulation reset.\n");
+ }
+ if (c == 'q') {
+ printf("Quitting and exiting emulator.\n");
+ goto stop_cpu_emulation;
+ }
+ if (c == 'd') {
+ realtime_disassembly ^= 1;
+ do_disasm = 1;
+ printf("Real time disassembly is now %s\n", realtime_disassembly ? "on" : "off");
+ }
+ if (c == 'D') {
+ int r = get_mapped_item_by_address(cfg, 0x08000000);
+ if (r != -1) {
+ printf("Dumping first 16MB of mapped range %d.\n", r);
+ FILE *dmp = fopen("./memdmp.bin", "wb+");
+ fwrite(cfg->map_data[r], 16 * SIZE_MEGA, 1, dmp);
+ fclose(dmp);
+ }
+ }
+ if (c == 's' && realtime_disassembly) {
+ do_disasm = 1;
+ }
+ if (c == 'S' && realtime_disassembly) {
+ do_disasm = 128;
+ }
+ }
+ }
+
+ 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:
+ printf("[CPU] End of CPU thread\n");
+}
+
void stop_cpu_emulation(uint8_t disasm_cur) {
M68K_END_TIMESLICE;
if (disasm_cur) {
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 $f3 is "set sample rate", followed by a byte.
+ */
+ uint8_t mouse_init[] = { 0xf4, 0xf3, 0x64 }; // enable, then set sample rate 100
+ uint8_t imps2_init[] = { 0xf3, 0xc8, 0xf3, 0x64, 0xf3, 0x50 }; // magic sequence; set sample 200, 100, 80
+ if (write(mouse_fd, mouse_init, sizeof(mouse_init)) != -1) {
+ if (write(mouse_fd, imps2_init, sizeof(imps2_init)) == -1)
+ printf("[MOUSE] Couldn't enable scroll wheel events; is this mouse from the 1980s?\n");
+ } else
+ printf("[MOUSE] Mouse didn't respond to normal PS/2 init; have you plugged a brick in by mistake?\n");
}
}
m68k_set_cpu_type(cpu_type);
cpu_pulse_reset();
- char c = 0, c_code = 0, c_type = 0;
- uint32_t last_irq = 0;
-
- pthread_t id;
+ pthread_t ipl_tid, cpu_tid;
int err;
- err = pthread_create(&id, NULL, &iplThread, NULL);
+ err = pthread_create(&ipl_tid, NULL, &ipl_task, NULL);
if (err != 0)
- printf("can't create IPL thread :[%s]", strerror(err));
- else
- printf("IPL Thread created successfully\n");
-
- m68k_pulse_reset();
- while (42) {
- if (mouse_hook_enabled) {
- get_mouse_status(&mouse_dx, &mouse_dy, &mouse_buttons);
+ printf("[ERROR] Cannot create IPL thread: [%s]", strerror(err));
+ else {
+ pthread_setname_np(ipl_tid, "pistorm: ipl");
+ printf("IPL thread created successfully\n");
}
- if (realtime_disassembly && (do_disasm || cpu_emulation_running)) {
- m68k_disassemble(disasm_buf, m68k_get_reg(NULL, M68K_REG_PC), cpu_type);
- printf("REGA: 0:$%.8X 1:$%.8X 2:$%.8X 3:$%.8X 4:$%.8X 5:$%.8X 6:$%.8X 7:$%.8X\n", m68k_get_reg(NULL, M68K_REG_A0), m68k_get_reg(NULL, M68K_REG_A1), m68k_get_reg(NULL, M68K_REG_A2), m68k_get_reg(NULL, M68K_REG_A3), \
- m68k_get_reg(NULL, M68K_REG_A4), m68k_get_reg(NULL, M68K_REG_A5), m68k_get_reg(NULL, M68K_REG_A6), m68k_get_reg(NULL, M68K_REG_A7));
- printf("REGD: 0:$%.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), \
- 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));
- printf("%.8X (%.8X)]] %s\n", m68k_get_reg(NULL, M68K_REG_PC), (m68k_get_reg(NULL, M68K_REG_PC) & 0xFFFFFF), disasm_buf);
- if (do_disasm)
- do_disasm--;
- m68k_execute(1);
- }
+ // create cpu task
+ err = pthread_create(&cpu_tid, NULL, &cpu_task, NULL);
+ if (err != 0)
+ printf("[ERROR] Cannot create CPU thread: [%s]", strerror(err));
else {
- if (cpu_emulation_running)
- m68k_execute(loop_cycles);
+ pthread_setname_np(cpu_tid, "pistorm: cpu");
+ printf("CPU thread created successfully\n");
}
- 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);
- }
- }
- else if (gayleirq && int2_enabled) {
- write16(0xdff09c, 0x8000 | (1 << 3));
- last_irq = 2;
- M68K_SET_IRQ(2);
- }
- else {
- if (last_irq != 0) {
- last_irq = 0;
- M68K_SET_IRQ(0);
- }
- }
-
- while (get_key_char(&c, &c_code, &c_type)) {
- if (c && c == cfg->keyboard_toggle_key && !kb_hook_enabled) {
- kb_hook_enabled = 1;
- printf("Keyboard hook enabled.\n");
- }
- else if (kb_hook_enabled) {
- if (c == 0x1B && c_type) {
- kb_hook_enabled = 0;
- printf("Keyboard hook disabled.\n");
- }
- else {
- /*printf("Key code: %.2X - ", c_code);
- switch (c_type) {
- case 0:
- printf("released.\n");
- break;
- case 1:
- printf("pressed.\n");
- break;
- case 2:
- printf("repeat.\n");
- break;
- default:
- printf("unknown.\n");
- break;
- }*/
- if (queue_keypress(c_code, c_type, cfg->platform->id) && int2_enabled) {
- last_irq = 2;
- M68K_SET_IRQ(2);
- }
- }
- }
-
- 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;
- }
- if (c == 'r') {
- cpu_emulation_running ^= 1;
- printf("CPU emulation is now %s\n", cpu_emulation_running ? "running" : "stopped");
- }
- if (c == 'g') {
- realtime_graphics_debug ^= 1;
- printf("Real time graphics debug is now %s\n", realtime_graphics_debug ? "on" : "off");
- }
- if (c == 'R') {
- cpu_pulse_reset();
- //m68k_pulse_reset();
- printf("CPU emulation reset.\n");
- }
- if (c == 'q') {
- printf("Quitting and exiting emulator.\n");
- goto stop_cpu_emulation;
- }
- if (c == 'd') {
- realtime_disassembly ^= 1;
- do_disasm = 1;
- printf("Real time disassembly is now %s\n", realtime_disassembly ? "on" : "off");
- }
- if (c == 'D') {
- int r = get_mapped_item_by_address(cfg, 0x08000000);
- if (r != -1) {
- printf("Dumping first 16MB of mapped range %d.\n", r);
- FILE *dmp = fopen("./memdmp.bin", "wb+");
- fwrite(cfg->map_data[r], 16 * SIZE_MEGA, 1, dmp);
- fclose(dmp);
- }
- }
- if (c == 's' && realtime_disassembly) {
- do_disasm = 1;
- }
- if (c == 'S' && realtime_disassembly) {
- do_disasm = 128;
- }
- }
- }
- }
-
- stop_cpu_emulation:;
+ // wait for cpu task to end before closing up and finishing
+ pthread_join(cpu_tid, NULL);
+ printf("[MAIN] All threads appear to have concluded; ending process\n");
if (mouse_fd != -1)
close(mouse_fd);
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)) {
projects / pistorm / blobdiff