+// SPDX-License-Identifier: MIT
+
+#include "m68k.h"
+#include "emulator.h"
+#include "platforms/platforms.h"
+#include "input/input.h"
+#include "m68kcpu.h"
+
+#include "platforms/amiga/Gayle.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 "platforms/amiga/pistorm-dev/pistorm-dev.h"
+#include "platforms/amiga/pistorm-dev/pistorm-dev-enums.h"
+#include "gpio/ps_protocol.h"
+
#include <assert.h>
#include <dirent.h>
#include <endian.h>
#include <fcntl.h>
+#include <poll.h>
#include <pthread.h>
#include <sched.h>
#include <signal.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/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/gpio.h"
-unsigned char read_ranges;
-unsigned int read_addr[8];
-unsigned int read_upper[8];
-unsigned char *read_data[8];
-unsigned char write_ranges;
-unsigned int write_addr[8];
-unsigned int write_upper[8];
-unsigned char *write_data[8];
+#define KEY_POLL_INTERVAL_MSEC 5000
int kb_hook_enabled = 0;
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 gayle_emulation_enabled;
+extern uint8_t gayle_a4k_int;
extern volatile unsigned int *gpio;
extern volatile uint16_t srdata;
-extern uint8_t realtime_graphics_debug;
-uint8_t realtime_disassembly;
+extern uint8_t realtime_graphics_debug, emulator_exiting;
+extern uint8_t rtg_on;
+uint8_t realtime_disassembly, int2_enabled = 0;
+uint32_t do_disasm = 0, old_level;
+uint32_t last_irq = 8, last_last_irq = 8;
+
+uint8_t end_signal = 0, load_new_config = 0;
char disasm_buf[4096];
int mem_fd, mouse_fd = -1, keyboard_fd = -1;
int mem_fd_gpclk;
-int gayle_emulation_enabled = 1;
int irq;
int gayleirq;
-void *iplThread(void *args) {
+#define MUSASHI_HAX
+
+#ifdef MUSASHI_HAX
+#include "m68kcpu.h"
+extern m68ki_cpu_core m68ki_cpu;
+extern int m68ki_initial_cycles;
+extern int m68ki_remaining_cycles;
+
+#define M68K_SET_IRQ(i) old_level = CPU_INT_LEVEL; \
+ CPU_INT_LEVEL = (i << 8); \
+ if(old_level != 0x0700 && CPU_INT_LEVEL == 0x0700) \
+ m68ki_cpu.nmi_pending = TRUE;
+#define M68K_END_TIMESLICE m68ki_initial_cycles = GET_CYCLES(); \
+ SET_CYCLES(0);
+#else
+#define M68K_SET_IRQ m68k_set_irq
+#define M68K_END_TIMESLICE m68k_end_timeslice()
+#endif
+
+#define NOP asm("nop"); asm("nop"); asm("nop"); asm("nop");
+#define MEMORY_BARRIER() __sync_synchronize()
+
+#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;
+struct emulator_config *cfg = NULL;
+char keyboard_file[256] = "/dev/input/event1";
+
+const uint16_t irq_delay = 0;
+
+struct DoReset
+{
+ char pad0[64];
+ unsigned int value;
+ char pad1[64];
+};
+
+volatile struct DoReset do_reset = {0};
+
+void *ipl_task(void *args) {
printf("IPL thread running\n");
+ uint16_t old_irq = 0;
+ uint32_t value;
+ unsigned int amiga_reset=0, amiga_reset_last=0;
while (1) {
- if (!gpio_get_irq()) {
- irq = 1;
- m68k_end_timeslice();
+ value = *(gpio + 13);
+ if (value & (1 << PIN_TXN_IN_PROGRESS))
+ goto noppers;
+
+ if (!(value & (1 << PIN_IPL_ZERO))) {
+ old_irq = irq_delay;
+ if (!irq) {
+ irq = 1;
+ MEMORY_BARRIER();
+ M68K_END_TIMESLICE;
+ }
+ }
+ else {
+ if (irq) {
+ if (old_irq) {
+ old_irq--;
+ }
+ else {
+ irq = 0;
+ }
+ MEMORY_BARRIER();
+ M68K_END_TIMESLICE;
+ }
+ }
+ if(do_reset.value==0)
+ {
+ amiga_reset=(value & (1 << PIN_RESET));
+ if(amiga_reset!=amiga_reset_last)
+ {
+ amiga_reset_last=amiga_reset;
+ if(amiga_reset==0)
+ {
+ printf("Amiga Reset is down...\n");
+ do_reset.value=1;
+ MEMORY_BARRIER();
+ M68K_END_TIMESLICE;
+ }
+ else
+ {
+ printf("Amiga Reset is up...\n");
+ }
+ }
}
- else
- irq = 0;
- if (gayle_emulation_enabled) {
+ /*if (gayle_ide_enabled) {
if (((gayle_int & 0x80) || gayle_a4k_int) && (get_ide(0)->drive[0].intrq || get_ide(0)->drive[1].intrq)) {
//get_ide(0)->drive[0].intrq = 0;
gayleirq = 1;
- m68k_end_timeslice();
+ M68K_END_TIMESLICE;
}
else
gayleirq = 0;
- }
- usleep(0);
+ }*/
+
+noppers:
+ 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;
}
+static inline unsigned int inline_read_status_reg() {
+ *(gpio + 7) = (REG_STATUS << PIN_A0);
+ *(gpio + 7) = 1 << PIN_RD;
+ *(gpio + 7) = 1 << PIN_RD;
+ *(gpio + 7) = 1 << PIN_RD;
+ *(gpio + 7) = 1 << PIN_RD;
-// Configurable emulator options
-unsigned int cpu_type = M68K_CPU_TYPE_68000;
-unsigned int loop_cycles = 300;
-struct emulator_config *cfg = NULL;
-char keyboard_file[256] = "/dev/input/event1";
+ unsigned int value = *(gpio + 13);
+
+ *(gpio + 10) = 0xffffec;
+
+ return (value >> 8) & 0xffff;
+}
+
+void *cpu_task() {
+ m68ki_cpu_core *state = &m68ki_cpu;
+ m68k_pulse_reset(state);
+
+cpu_loop:
+ 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(state, 1);
+ }
+ else {
+ if (cpu_emulation_running) {
+ MEMORY_BARRIER();
+ if (irq)
+ m68k_execute(state, 5);
+ else
+ m68k_execute(state, loop_cycles);
+ }
+ }
+
+ MEMORY_BARRIER();
+ while (irq) {
+ last_irq = ((inline_read_status_reg() & 0xe000) >> 13);
+ if (last_irq != 0 && last_irq != last_last_irq) {
+ last_last_irq = last_irq;
+ M68K_SET_IRQ(last_irq);
+ }
+ m68k_execute(state, 50);
+ MEMORY_BARRIER();
+ }
+
+ MEMORY_BARRIER();
+ if (!irq && last_last_irq != 0) {
+ //M68K_SET_IRQ(0);
+ last_last_irq = 0;
+ }
+
+ MEMORY_BARRIER();
+ if (do_reset.value) {
+ cpu_pulse_reset();
+ do_reset.value=0;
+ usleep(1000000); // 1sec
+ rtg_on=0;
+// while(amiga_reset==0);
+// printf("CPU emulation reset.\n");
+ }
+
+ 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;
+ }
+
+ if (load_new_config) {
+ printf("[CPU] Loading new config file.\n");
+ goto stop_cpu_emulation;
+ }
+
+ if (end_signal)
+ goto stop_cpu_emulation;
+
+ goto cpu_loop;
+
+stop_cpu_emulation:
+ printf("[CPU] End of CPU thread\n");
+ return (void *)NULL;
+}
+
+void *keyboard_task() {
+ struct pollfd kbdpoll[1];
+ int kpollrc;
+ char c = 0, c_code = 0, c_type = 0;
+ char grab_message[] = "[KBD] Grabbing keyboard from input layer\n",
+ ungrab_message[] = "[KBD] Ungrabbing keyboard\n";
+
+ printf("[KBD] Keyboard thread started\n");
+
+ // because we permit the keyboard to be grabbed on startup, quickly check if we need to grab it
+ if (kb_hook_enabled && cfg->keyboard_grab) {
+ printf(grab_message);
+ grab_device(keyboard_fd);
+ }
+
+ kbdpoll[0].fd = keyboard_fd;
+ kbdpoll[0].events = POLLIN;
+
+key_loop:
+ kpollrc = poll(kbdpoll, 1, KEY_POLL_INTERVAL_MSEC);
+ if ((kpollrc > 0) && (kbdpoll[0].revents & POLLHUP)) {
+ // in the event that a keyboard is unplugged, keyboard_task will whiz up to 100% utilisation
+ // this is undesired, so if the keyboard HUPs, end the thread without ending the emulation
+ printf("[KBD] Keyboard node returned HUP (unplugged?)\n");
+ goto key_end;
+ }
+
+ // if kpollrc > 0 then it contains number of events to pull, also check if POLLIN is set in revents
+ if ((kpollrc <= 0) || !(kbdpoll[0].revents & POLLIN)) {
+ goto key_loop;
+ }
+
+ while (get_key_char(&c, &c_code, &c_type)) {
+ if (c && c == cfg->keyboard_toggle_key && !kb_hook_enabled) {
+ kb_hook_enabled = 1;
+ printf("[KBD] Keyboard hook enabled.\n");
+ if (cfg->keyboard_grab) {
+ grab_device(keyboard_fd);
+ printf(grab_message);
+ }
+ } else if (kb_hook_enabled) {
+ if (c == 0x1B && c_type) {
+ kb_hook_enabled = 0;
+ printf("[KBD] Keyboard hook disabled.\n");
+ if (cfg->keyboard_grab) {
+ release_device(keyboard_fd);
+ printf(ungrab_message);
+ }
+ } else {
+ 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");
+ end_signal = 1;
+ goto key_end;
+ }
+ 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;
+ }
+ }
+ }
+
+ goto key_loop;
+
+key_end:
+ printf("[KBD] Keyboard thread ending\n");
+ if (cfg->keyboard_grab) {
+ printf(ungrab_message);
+ release_device(keyboard_fd);
+ }
+ return (void*)NULL;
+}
-//unsigned char g_kick[524288];
-//unsigned char g_ram[FASTSIZE + 1]; /* RAM */
-int ovl;
+void stop_cpu_emulation(uint8_t disasm_cur) {
+ M68K_END_TIMESLICE;
+ if (disasm_cur) {
+ 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);
+ realtime_disassembly = 1;
+ }
+
+ cpu_emulation_running = 0;
+ do_disasm = 0;
+}
+
+unsigned int ovl;
static volatile unsigned char maprom;
void sigint_handler(int sig_num) {
cfg->platform->shutdown(cfg);
}
+ while (!emulator_exiting) {
+ emulator_exiting = 1;
+ usleep(0);
+ }
+
+
exit(0);
}
int main(int argc, char *argv[]) {
int g;
- const struct sched_param priority = {99};
+
+ ps_setup_protocol();
+
+ //const struct sched_param priority = {99};
// Some command line switch stuffles
for (g = 1; g < argc; g++) {
- if (strcmp(argv[g], "--disable-gayle") == 0) {
- gayle_emulation_enabled = 0;
- }
- else if (strcmp(argv[g], "--cpu_type") == 0 || strcmp(argv[g], "--cpu") == 0) {
+ if (strcmp(argv[g], "--cpu_type") == 0 || strcmp(argv[g], "--cpu") == 0) {
if (g + 1 >= argc) {
printf("%s switch found, but no CPU type specified.\n", argv[g]);
} else {
printf("%s switch found, but no config filename specified.\n", argv[g]);
} else {
g++;
- cfg = load_config_file(argv[g]);
+ FILE *chk = fopen(argv[g], "rb");
+ if (chk == NULL) {
+ printf("Config file %s does not exist, please check that you've specified the path correctly.\n", argv[g]);
+ } else {
+ fclose(chk);
+ load_new_config = 1;
+ set_pistorm_devcfg_filename(argv[g]);
+ }
}
}
else if (strcmp(argv[g], "--keyboard-file") == 0 || strcmp(argv[g], "--kbfile") == 0) {
}
}
+switch_config:
+ srand(clock());
+
+ ps_reset_state_machine();
+ ps_pulse_reset();
+ usleep(1500);
+
+ if (load_new_config != 0) {
+ uint8_t config_action = load_new_config - 1;
+ load_new_config = 0;
+ if (cfg) {
+ free_config_file(cfg);
+ free(cfg);
+ cfg = NULL;
+ }
+
+ switch(config_action) {
+ case PICFG_LOAD:
+ case PICFG_RELOAD:
+ cfg = load_config_file(get_pistorm_devcfg_filename());
+ break;
+ case PICFG_DEFAULT:
+ cfg = load_config_file("default.cfg");
+ break;
+ }
+ }
+
if (!cfg) {
printf("No config file specified. Trying to load default.cfg...\n");
cfg = load_config_file("default.cfg");
}
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");
}
}
- keyboard_fd = open(keyboard_file, O_RDONLY | O_NONBLOCK);
+ if (cfg->keyboard_file)
+ keyboard_fd = open(cfg->keyboard_file, O_RDONLY | O_NONBLOCK);
+ else
+ keyboard_fd = open(keyboard_file, O_RDONLY | O_NONBLOCK);
+
if (keyboard_fd == -1) {
printf("Failed to open keyboard event source.\n");
}
- InitGayle();
+ if (cfg->mouse_autoconnect)
+ mouse_hook_enabled = 1;
- signal(SIGINT, sigint_handler);
- setup_io();
+ if (cfg->keyboard_autoconnect)
+ kb_hook_enabled = 1;
- //goto skip_everything;
-
- // Enable 200MHz CLK output on GPIO4, adjust divider and pll source depending
- // on pi model
- printf("Enable 200MHz GPCLK0 on GPIO4\n");
- gpio_enable_200mhz();
-
- // reset cpld statemachine first
-
- write_reg(0x01);
- usleep(100);
- usleep(1500);
- write_reg(0x00);
- usleep(100);
+ InitGayle();
- // reset amiga and statemachine
- skip_everything:;
+ signal(SIGINT, sigint_handler);
+ ps_reset_state_machine();
+ ps_pulse_reset();
usleep(1500);
m68k_init();
printf("Setting CPU type to %d.\n", cpu_type);
- m68k_set_cpu_type(cpu_type);
+ m68k_set_cpu_type(&m68ki_cpu, cpu_type);
cpu_pulse_reset();
- if (maprom == 1) {
- m68k_set_reg(M68K_REG_PC, 0xF80002);
- } else {
- m68k_set_reg(M68K_REG_PC, 0x0);
- }
-
- char c = 0, c_code = 0, c_type = 0;
-
- pthread_t id;
+ pthread_t ipl_tid = 0, cpu_tid, kbd_tid;
int err;
- err = pthread_create(&id, NULL, &iplThread, 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);
- }
-
- if (cpu_emulation_running)
- m68k_execute(loop_cycles);
-
-disasm_run:;
- if (realtime_disassembly) {
- m68k_execute(1);
- 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 (irq) {
- unsigned int status = read_reg();
- m68k_set_irq((status & 0xe000) >> 13);
- }
- else if (gayleirq) {
- write16(0xdff09c, 0x8000 | (1 << 3));
- //PAULA_SET_IRQ(3); // IRQ 3 = INT2
- m68k_set_irq(2);
- }
+ if (ipl_tid == 0) {
+ err = pthread_create(&ipl_tid, NULL, &ipl_task, NULL);
+ if (err != 0)
+ printf("[ERROR] Cannot create IPL thread: [%s]", strerror(err));
else {
- m68k_set_irq(0);
+ pthread_setname_np(ipl_tid, "pistorm: ipl");
+ printf("IPL thread created successfully\n");
}
+ }
- 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)) {
- m68k_set_irq(2);
- }
- }
- }
+ // create keyboard task
+ err = pthread_create(&kbd_tid, NULL, &keyboard_task, NULL);
+ if (err != 0)
+ printf("[ERROR] Cannot create keyboard thread: [%s]", strerror(err));
+ else {
+ pthread_setname_np(kbd_tid, "pistorm: kbd");
+ printf("[MAIN] Keyboard thread created successfully\n");
+ }
- 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;
- printf("Real time disassembly is now %s\n", realtime_disassembly ? "on" : "off");
- }
- }
- }
+ // 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 {
+ pthread_setname_np(cpu_tid, "pistorm: cpu");
+ printf("[MAIN] CPU thread created successfully\n");
+ }
- if (realtime_disassembly)
- goto disasm_run;
+ // wait for cpu task to end before closing up and finishing
+ pthread_join(cpu_tid, NULL);
- //gpio_handle_irq();
- //GPIO_HANDLE_IRQ;
+ while (!emulator_exiting) {
+ emulator_exiting = 1;
+ usleep(0);
}
- stop_cpu_emulation:;
+ if (load_new_config == 0)
+ printf("[MAIN] All threads appear to have concluded; ending process\n");
if (mouse_fd != -1)
close(mouse_fd);
if (mem_fd)
close(mem_fd);
+ if (load_new_config != 0)
+ goto switch_config;
+
+ if (cfg->platform->shutdown) {
+ cfg->platform->shutdown(cfg);
+ }
+
return 0;
}
void cpu_pulse_reset(void) {
- write_reg(0x00);
- // printf("Status Reg%x\n",read_reg());
- usleep(100000);
- write_reg(0x02);
- // printf("Status Reg%x\n",read_reg());
+ m68ki_cpu_core *state = &m68ki_cpu;
+ ps_pulse_reset();
ovl = 1;
- m68k_write_memory_8(0xbfe201, 0x0001); // AMIGA OVL
- m68k_write_memory_8(0xbfe001, 0x0001); // AMIGA OVL high (ROM@0x0)
+ if (cfg->platform->handle_reset)
+ cfg->platform->handle_reset(cfg);
- m68k_pulse_reset();
+ m68k_pulse_reset(state);
}
int cpu_irq_ack(int level) {
static unsigned int target = 0;
static uint8_t send_keypress = 0;
+static uint32_t platform_res, rres;
uint8_t cdtv_dmac_reg_idx_read();
void cdtv_dmac_reg_idx_write(uint8_t value);
uint32_t cdtv_dmac_read(uint32_t address, uint8_t type);
void cdtv_dmac_write(uint32_t address, uint32_t value, uint8_t type);
-#define PLATFORM_CHECK_READ(a) \
- if (address >= cfg->custom_low && address < cfg->custom_high) { \
- unsigned int target = 0; \
- switch(cfg->platform->id) { \
- case PLATFORM_AMIGA: { \
- if (address >= PISCSI_OFFSET && address < PISCSI_UPPER) { \
- return handle_piscsi_read(address, a); \
- } \
- if (address >= PINET_OFFSET && address < PINET_UPPER) { \
- return handle_pinet_read(address, a); \
- } \
- if (address >= PIGFX_RTG_BASE && address < PIGFX_UPPER) { \
- return rtg_read((address & 0x0FFFFFFF), a); \
- } \
- if (custom_read_amiga(cfg, address, &target, a) != -1) { \
- return target; \
- } \
- break; \
- } \
- default: \
- break; \
- } \
- } \
- if (ovl || (address >= cfg->mapped_low && address < cfg->mapped_high)) { \
- if (handle_mapped_read(cfg, address, &target, a) != -1) \
- return target; \
- }
+unsigned int garbage = 0;
-unsigned int m68k_read_memory_8(unsigned int address) {
- PLATFORM_CHECK_READ(OP_TYPE_BYTE);
+static inline void inline_write_16(unsigned int address, unsigned int data) {
+ *(gpio + 0) = GPFSEL0_OUTPUT;
+ *(gpio + 1) = GPFSEL1_OUTPUT;
+ *(gpio + 2) = GPFSEL2_OUTPUT;
- /*if (address >= 0xE90000 && address < 0xF00000) {
- printf("BYTE read from DMAC @%.8X:", address);
- uint32_t v = cdtv_dmac_read(address & 0xFFFF, OP_TYPE_BYTE);
- printf("%.2X\n", v);
- m68k_end_timeslice();
- cpu_emulation_running = 0;
- return v;
- }*/
+ *(gpio + 7) = ((data & 0xffff) << 8) | (REG_DATA << PIN_A0);
+ *(gpio + 7) = 1 << PIN_WR;
+ *(gpio + 10) = 1 << PIN_WR;
+ *(gpio + 10) = 0xffffec;
- if (mouse_hook_enabled) {
- if (address == CIAAPRA) {
- unsigned char result = (unsigned int)read8((uint32_t)address);
- if (mouse_buttons & 0x01) {
- //mouse_buttons -= 1;
- return (unsigned int)(result ^ 0x40);
- }
- else
- return (unsigned int)result;
- }
+ *(gpio + 7) = ((address & 0xffff) << 8) | (REG_ADDR_LO << PIN_A0);
+ *(gpio + 7) = 1 << PIN_WR;
+ *(gpio + 10) = 1 << PIN_WR;
+ *(gpio + 10) = 0xffffec;
+
+ *(gpio + 7) = ((0x0000 | (address >> 16)) << 8) | (REG_ADDR_HI << PIN_A0);
+ *(gpio + 7) = 1 << PIN_WR;
+ *(gpio + 10) = 1 << PIN_WR;
+ *(gpio + 10) = 0xffffec;
+
+ *(gpio + 0) = GPFSEL0_INPUT;
+ *(gpio + 1) = GPFSEL1_INPUT;
+ *(gpio + 2) = GPFSEL2_INPUT;
+
+ while (*(gpio + 13) & (1 << PIN_TXN_IN_PROGRESS)) {}
+ NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP
+}
+
+static inline void inline_write_8(unsigned int address, unsigned int data) {
+ if ((address & 1) == 0)
+ data = data + (data << 8); // EVEN, A0=0,UDS
+ else
+ data = data & 0xff; // ODD , A0=1,LDS
+
+ *(gpio + 0) = GPFSEL0_OUTPUT;
+ *(gpio + 1) = GPFSEL1_OUTPUT;
+ *(gpio + 2) = GPFSEL2_OUTPUT;
+
+ *(gpio + 7) = ((data & 0xffff) << 8) | (REG_DATA << PIN_A0);
+ *(gpio + 7) = 1 << PIN_WR;
+ *(gpio + 10) = 1 << PIN_WR;
+ *(gpio + 10) = 0xffffec;
+
+ *(gpio + 7) = ((address & 0xffff) << 8) | (REG_ADDR_LO << PIN_A0);
+ *(gpio + 7) = 1 << PIN_WR;
+ *(gpio + 10) = 1 << PIN_WR;
+ *(gpio + 10) = 0xffffec;
+
+ *(gpio + 7) = ((0x0100 | (address >> 16)) << 8) | (REG_ADDR_HI << PIN_A0);
+ *(gpio + 7) = 1 << PIN_WR;
+ *(gpio + 10) = 1 << PIN_WR;
+ *(gpio + 10) = 0xffffec;
+
+ *(gpio + 0) = GPFSEL0_INPUT;
+ *(gpio + 1) = GPFSEL1_INPUT;
+ *(gpio + 2) = GPFSEL2_INPUT;
+
+ while (*(gpio + 13) & (1 << PIN_TXN_IN_PROGRESS)) {}
+ NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP
+}
+
+static inline void inline_write_32(unsigned int address, unsigned int value) {
+ inline_write_16(address, value >> 16);
+ inline_write_16(address + 2, value);
+}
+
+static inline unsigned int inline_read_16(unsigned int address) {
+ *(gpio + 0) = GPFSEL0_OUTPUT;
+ *(gpio + 1) = GPFSEL1_OUTPUT;
+ *(gpio + 2) = GPFSEL2_OUTPUT;
+
+ *(gpio + 7) = ((address & 0xffff) << 8) | (REG_ADDR_LO << PIN_A0);
+ *(gpio + 7) = 1 << PIN_WR;
+ *(gpio + 10) = 1 << PIN_WR;
+ *(gpio + 10) = 0xffffec;
+
+ *(gpio + 7) = ((0x0200 | (address >> 16)) << 8) | (REG_ADDR_HI << PIN_A0);
+ *(gpio + 7) = 1 << PIN_WR;
+ *(gpio + 10) = 1 << PIN_WR;
+ *(gpio + 10) = 0xffffec;
+
+ *(gpio + 0) = GPFSEL0_INPUT;
+ *(gpio + 1) = GPFSEL1_INPUT;
+ *(gpio + 2) = GPFSEL2_INPUT;
+
+ *(gpio + 7) = (REG_DATA << PIN_A0);
+ *(gpio + 7) = 1 << PIN_RD;
+
+ while (*(gpio + 13) & (1 << PIN_TXN_IN_PROGRESS)) {}
+ unsigned int value = *(gpio + 13);
+
+ *(gpio + 10) = 0xffffec;
+
+ return (value >> 8) & 0xffff;
+}
+
+static inline unsigned int inline_read_8(unsigned int address) {
+ *(gpio + 0) = GPFSEL0_OUTPUT;
+ *(gpio + 1) = GPFSEL1_OUTPUT;
+ *(gpio + 2) = GPFSEL2_OUTPUT;
+
+ *(gpio + 7) = ((address & 0xffff) << 8) | (REG_ADDR_LO << PIN_A0);
+ *(gpio + 7) = 1 << PIN_WR;
+ *(gpio + 10) = 1 << PIN_WR;
+ *(gpio + 10) = 0xffffec;
+
+ *(gpio + 7) = ((0x0300 | (address >> 16)) << 8) | (REG_ADDR_HI << PIN_A0);
+ *(gpio + 7) = 1 << PIN_WR;
+ *(gpio + 10) = 1 << PIN_WR;
+ *(gpio + 10) = 0xffffec;
+
+ *(gpio + 0) = GPFSEL0_INPUT;
+ *(gpio + 1) = GPFSEL1_INPUT;
+ *(gpio + 2) = GPFSEL2_INPUT;
+
+ *(gpio + 7) = (REG_DATA << PIN_A0);
+ *(gpio + 7) = 1 << PIN_RD;
+
+ while (*(gpio + 13) & (1 << PIN_TXN_IN_PROGRESS)) {}
+ unsigned int value = *(gpio + 13);
+
+ *(gpio + 10) = 0xffffec;
+
+ value = (value >> 8) & 0xffff;
+
+ if ((address & 1) == 0)
+ return (value >> 8) & 0xff; // EVEN, A0=0,UDS
+ else
+ return value & 0xff; // ODD , A0=1,LDS
+}
+
+static inline unsigned int inline_read_32(unsigned int address) {
+ unsigned int a = inline_read_16(address);
+ unsigned int b = inline_read_16(address + 2);
+ return (a << 16) | b;
+}
+
+static inline uint32_t ps_read(uint8_t type, uint32_t addr) {
+ switch (type) {
+ case OP_TYPE_BYTE:
+ return inline_read_8(addr);
+ case OP_TYPE_WORD:
+ return inline_read_16(addr);
+ case OP_TYPE_LONGWORD:
+ return inline_read_32(addr);
}
- if (kb_hook_enabled) {
- unsigned char result = (unsigned int)read8((uint32_t)address);
- if (address == CIAAICR) {
- if (get_num_kb_queued() && (!send_keypress || send_keypress == 1)) {
- result |= 0x08;
- if (!send_keypress)
- send_keypress = 1;
- }
- if (send_keypress == 2) {
- result |= 0x02;
- send_keypress = 0;
+ // This shouldn't actually happen.
+ return 0;
+}
+
+static inline void ps_write(uint8_t type, uint32_t addr, uint32_t val) {
+ switch (type) {
+ case OP_TYPE_BYTE:
+ inline_write_8(addr, val);
+ return;
+ case OP_TYPE_WORD:
+ inline_write_16(addr, val);
+ return;
+ case OP_TYPE_LONGWORD:
+ inline_write_32(addr, val);
+ return;
+ }
+ // This shouldn't actually happen.
+ return;
+}
+
+static inline int32_t platform_read_check(uint8_t type, uint32_t addr, uint32_t *res) {
+ switch (cfg->platform->id) {
+ case PLATFORM_AMIGA:
+ switch (addr) {
+ case CIAAPRA:
+ if (mouse_hook_enabled && (mouse_buttons & 0x01)) {
+ rres = (uint32_t)ps_read(type, addr);
+ *res = (rres ^ 0x40);
+ return 1;
+ }
+ return 0;
+ break;
+ case CIAAICR:
+ if (kb_hook_enabled) {
+ rres = (uint32_t)ps_read(type, addr);
+ if (get_num_kb_queued() && (!send_keypress || send_keypress == 1)) {
+ rres |= 0x08;
+ if (!send_keypress)
+ send_keypress = 1;
+ }
+ if (send_keypress == 2) {
+ send_keypress = 0;
+ }
+ *res = rres;
+ return 1;
+ }
+ return 0;
+ break;
+ case CIAADAT:
+ if (kb_hook_enabled) {
+ rres = (uint32_t)ps_read(type, addr);
+ uint8_t c = 0, t = 0;
+ pop_queued_key(&c, &t);
+ t ^= 0x01;
+ rres = ((c << 1) | t) ^ 0xFF;
+ send_keypress = 2;
+ *res = rres;
+ return 1;
+ }
+ return 0;
+ break;
+ case JOY0DAT:
+ if (mouse_hook_enabled) {
+ unsigned short result = (mouse_dy << 8) | (mouse_dx);
+ *res = (unsigned int)result;
+ return 1;
+ }
+ return 0;
+ break;
+ case POTGOR:
+ if (mouse_hook_enabled) {
+ unsigned short result = (unsigned short)ps_read(type, addr);
+ // bit 1 rmb, bit 2 mmb
+ if (mouse_buttons & 0x06) {
+ *res = (unsigned int)((result ^ ((mouse_buttons & 0x02) << 9)) // move rmb to bit 10
+ & (result ^ ((mouse_buttons & 0x04) << 6))); // move mmb to bit 8
+ return 1;
+ }
+ *res = (unsigned int)(result & 0xfffd);
+ return 1;
+ }
+ return 0;
+ break;
+ default:
+ break;
}
- return result;
- }
- if (address == CIAADAT) {
- if (send_keypress) {
- uint8_t c = 0, t = 0;
- pop_queued_key(&c, &t);
- t ^= 0x01;
- result = ((c << 1) | t) ^ 0xFF;
- send_keypress = 2;
+
+ if (addr >= cfg->custom_low && addr < cfg->custom_high) {
+ if (addr >= PISCSI_OFFSET && addr < PISCSI_UPPER) {
+ *res = handle_piscsi_read(addr, type);
+ return 1;
+ }
+ if (addr >= PINET_OFFSET && addr < PINET_UPPER) {
+ *res = handle_pinet_read(addr, type);
+ return 1;
+ }
+ if (addr >= PIGFX_RTG_BASE && addr < PIGFX_UPPER) {
+ *res = rtg_read((addr & 0x0FFFFFFF), type);
+ return 1;
+ }
+ if (custom_read_amiga(cfg, addr, &target, type) != -1) {
+ *res = target;
+ return 1;
+ }
}
- return result;
+ break;
+ default:
+ break;
+ }
+
+ if (ovl || (addr >= cfg->mapped_low && addr < cfg->mapped_high)) {
+ if (handle_mapped_read(cfg, addr, &target, type) != -1) {
+ *res = target;
+ return 1;
}
}
+ return 0;
+}
+
+unsigned int m68k_read_memory_8(unsigned int address) {
+ if (platform_read_check(OP_TYPE_BYTE, address, &platform_res)) {
+ return platform_res;
+ }
+
if (address & 0xFF000000)
return 0;
- return read8((uint32_t)address);
+ return (unsigned int)inline_read_8((uint32_t)address);
}
unsigned int m68k_read_memory_16(unsigned int address) {
- PLATFORM_CHECK_READ(OP_TYPE_WORD);
-
- /*if (address >= 0xE90000 && address < 0xF00000) {
- printf("WORD read from DMAC @%.8X:", address);
- uint32_t v = cdtv_dmac_read(address & 0xFFFF, OP_TYPE_WORD);
- printf("%.2X\n", v);
- m68k_end_timeslice();
- cpu_emulation_running = 0;
- return v;
- }*/
-
- if (mouse_hook_enabled) {
- if (address == JOY0DAT) {
- // Forward mouse valueses to Amyga.
- unsigned short result = (mouse_dy << 8) | (mouse_dx);
- return (unsigned int)result;
- }
- /*if (address == CIAAPRA) {
- unsigned short result = (unsigned int)read16((uint32_t)address);
- if (mouse_buttons & 0x01) {
- return (unsigned int)(result | 0x40);
- }
- else
- return (unsigned int)result;
- }*/
- if (address == POTGOR) {
- unsigned short result = (unsigned int)read16((uint32_t)address);
- if (mouse_buttons & 0x02) {
- return (unsigned int)(result ^ (0x2 << 9));
- }
- else
- return (unsigned int)(result & 0xFFFD);
- }
+ if (platform_read_check(OP_TYPE_WORD, address, &platform_res)) {
+ return platform_res;
}
if (address & 0xFF000000)
return 0;
if (address & 0x01) {
- return ((read8(address) << 8) | read8(address + 1));
+ return ((inline_read_8(address) << 8) | inline_read_8(address + 1));
}
- return (unsigned int)read16((uint32_t)address);
+ return (unsigned int)inline_read_16((uint32_t)address);
}
unsigned int m68k_read_memory_32(unsigned int address) {
- PLATFORM_CHECK_READ(OP_TYPE_LONGWORD);
-
- /*if (address >= 0xE90000 && address < 0xF00000) {
- printf("LONGWORD read from DMAC @%.8X:", address);
- uint32_t v = cdtv_dmac_read(address & 0xFFFF, OP_TYPE_LONGWORD);
- printf("%.2X\n", v);
- m68k_end_timeslice();
- cpu_emulation_running = 0;
- return v;
- }*/
+ if (platform_read_check(OP_TYPE_LONGWORD, address, &platform_res)) {
+ return platform_res;
+ }
if (address & 0xFF000000)
return 0;
if (address & 0x01) {
- uint32_t c = read8(address);
- c |= (be16toh(read16(address+1)) << 8);
- c |= (read8(address + 3) << 24);
+ uint32_t c = inline_read_8(address);
+ c |= (be16toh(inline_read_16(address+1)) << 8);
+ c |= (inline_read_8(address + 3) << 24);
return htobe32(c);
}
- uint16_t a = read16(address);
- uint16_t b = read16(address + 2);
+ uint16_t a = inline_read_16(address);
+ uint16_t b = inline_read_16(address + 2);
return (a << 16) | b;
}
-#define PLATFORM_CHECK_WRITE(a) \
- if (address >= cfg->custom_low && address < cfg->custom_high) { \
- switch(cfg->platform->id) { \
- case PLATFORM_AMIGA: { \
- if (address >= PISCSI_OFFSET && address < PISCSI_UPPER) { \
- handle_piscsi_write(address, value, a); \
- } \
- if (address >= PINET_OFFSET && address < PINET_UPPER) { \
- handle_pinet_write(address, value, a); \
- } \
- if (address >= PIGFX_RTG_BASE && address < PIGFX_UPPER) { \
- rtg_write((address & 0x0FFFFFFF), value, a); \
- return; \
- } \
- if (custom_write_amiga(cfg, address, value, a) != -1) { \
- return; \
- } \
- break; \
- } \
- default: \
- break; \
- } \
- } \
- if (address >= cfg->mapped_low && address < cfg->mapped_high) { \
- if (handle_mapped_write(cfg, address, value, a) != -1) \
- return; \
- }
-
-void m68k_write_memory_8(unsigned int address, unsigned int value) {
- PLATFORM_CHECK_WRITE(OP_TYPE_BYTE);
+static inline int32_t platform_write_check(uint8_t type, uint32_t addr, uint32_t val) {
+ switch (cfg->platform->id) {
+ case PLATFORM_MAC:
+ switch (addr) {
+ case 0xEFFFFE: // VIA1?
+ if (val & 0x10 && !ovl) {
+ ovl = 1;
+ printf("[MAC] OVL on.\n");
+ handle_ovl_mappings_mac68k(cfg);
+ } else if (ovl) {
+ ovl = 0;
+ printf("[MAC] OVL off.\n");
+ handle_ovl_mappings_mac68k(cfg);
+ }
+ break;
+ }
+ break;
+ case PLATFORM_AMIGA:
+ switch (addr) {
+ case CIAAPRA:
+ if (ovl != (val & (1 << 0))) {
+ ovl = (val & (1 << 0));
+ printf("OVL:%x\n", ovl);
+ }
+ return 0;
+ break;
+ case SERDAT: {
+ char *serdat = (char *)&val;
+ // 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]);
+ return 0;
+ break;
+ }
+ case INTENA:
+ // This code is kind of strange and should probably be reworked/revoked.
+ if (!(val & 0x8000)) {
+ if (val & 0x04) {
+ int2_enabled = 0;
+ }
+ }
+ else if (val & 0x04) {
+ int2_enabled = 1;
+ }
+ return 0;
+ break;
+ default:
+ break;
+ }
- /*if (address >= 0xE90000 && address < 0xF00000) {
- printf("BYTE write to DMAC @%.8X: %.2X\n", address, value);
- cdtv_dmac_write(address & 0xFFFF, value, OP_TYPE_BYTE);
- m68k_end_timeslice();
- cpu_emulation_running = 0;
- return;
- }*/
+ if (addr >= cfg->custom_low && addr < cfg->custom_high) {
+ if (addr >= PISCSI_OFFSET && addr < PISCSI_UPPER) {
+ handle_piscsi_write(addr, val, type);
+ return 1;
+ }
+ if (addr >= PINET_OFFSET && addr < PINET_UPPER) {
+ handle_pinet_write(addr, val, type);
+ return 1;
+ }
+ if (addr >= PIGFX_RTG_BASE && addr < PIGFX_UPPER) {
+ rtg_write((addr & 0x0FFFFFFF), val, type);
+ return 1;
+ }
+ if (custom_write_amiga(cfg, addr, val, type) != -1) {
+ return 1;
+ }
+ }
+ break;
+ default:
+ break;
+ }
- if (address == 0xbfe001) {
- if (ovl != (value & (1 << 0))) {
- ovl = (value & (1 << 0));
- printf("OVL:%x\n", ovl);
+ if (ovl || (addr >= cfg->mapped_low && addr < cfg->mapped_high)) {
+ if (handle_mapped_write(cfg, addr, val, type) != -1) {
+ return 1;
}
}
+ return 0;
+}
+
+void m68k_write_memory_8(unsigned int address, unsigned int value) {
+ if (platform_write_check(OP_TYPE_BYTE, address, value))
+ return;
+
if (address & 0xFF000000)
return;
- write8((uint32_t)address, value);
+ inline_write_8((uint32_t)address, value);
return;
}
void m68k_write_memory_16(unsigned int address, unsigned int value) {
- PLATFORM_CHECK_WRITE(OP_TYPE_WORD);
-
- /*if (address >= 0xE90000 && address < 0xF00000) {
- printf("WORD write to DMAC @%.8X: %.4X\n", address, value);
- cdtv_dmac_write(address & 0xFFFF, value, OP_TYPE_WORD);
- m68k_end_timeslice();
- cpu_emulation_running = 0;
+ if (platform_write_check(OP_TYPE_WORD, address, value))
return;
- }*/
-
- if (address == 0xDFF030) {
- char *beb = (char *)&value;
- printf("%c%c", beb[1], beb[0]);
- }
if (address & 0xFF000000)
return;
- if (address & 0x01)
- printf("Unaligned WORD write!\n");
+ if (address & 0x01) {
+ inline_write_8(value & 0xFF, address);
+ inline_write_8((value >> 8) & 0xFF, address + 1);
+ return;
+ }
- write16((uint32_t)address, value);
+ inline_write_16((uint32_t)address, value);
return;
}
void m68k_write_memory_32(unsigned int address, unsigned int value) {
- PLATFORM_CHECK_WRITE(OP_TYPE_LONGWORD);
-
- /*if (address >= 0xE90000 && address < 0xF00000) {
- printf("LONGWORD write to DMAC @%.8X: %.8X\n", address, value);
- cdtv_dmac_write(address & 0xFFFF, value, OP_TYPE_LONGWORD);
- m68k_end_timeslice();
- cpu_emulation_running = 0;
+ if (platform_write_check(OP_TYPE_LONGWORD, address, value))
return;
- }*/
if (address & 0xFF000000)
return;
- if (address & 0x01)
- printf("Unaligned LONGWORD write!\n");
+ if (address & 0x01) {
+ inline_write_8(value & 0xFF, address);
+ inline_write_16(htobe16(((value >> 8) & 0xFFFF)), address + 1);
+ inline_write_8((value >> 24), address + 3);
+ return;
+ }
- write16(address, value >> 16);
- write16(address + 2, value);
+ inline_write_16(address, value >> 16);
+ inline_write_16(address + 2, value);
return;
}
projects / pistorm / blobdiff