-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
+#include <assert.h>
#include <dirent.h>
+#include <endian.h>
#include <fcntl.h>
-#include <assert.h>
+#include <pthread.h>
+#include <sched.h>
+#include <signal.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
#include <sys/mman.h>
-#include <sys/types.h>
#include <sys/stat.h>
+#include <sys/types.h>
#include <unistd.h>
-#include <stdint.h>
-#include <sched.h>
+#include <sys/ioctl.h>
#include "m68k.h"
#include "main.h"
-#include<pthread.h>
-
-
-//#define BCM2708_PERI_BASE 0x20000000 //pi0-1
-#define BCM2708_PERI_BASE 0x3F000000 //pi3
-#define BCM2708_PERI_SIZE 0x01000000
-#define GPIO_BASE (BCM2708_PERI_BASE + 0x200000) /* GPIO controller */
-#define GPCLK_BASE (BCM2708_PERI_BASE + 0x101000)
-#define GPIO_ADDR 0x200000 /* GPIO controller */
-#define GPCLK_ADDR 0x101000
-#define CLK_PASSWD 0x5a000000
-#define CLK_GP0_CTL 0x070
-#define CLK_GP0_DIV 0x074
-
-#define SA0 5
-#define SA1 3
-#define SA2 2
-
-#define STATUSREGADDR GPIO_CLR = 1<<SA0;GPIO_CLR = 1<<SA1;GPIO_SET = 1<<SA2;
-#define W16 GPIO_CLR = 1<<SA0;GPIO_CLR = 1<<SA1;GPIO_CLR = 1<<SA2;
-#define R16 GPIO_SET = 1<<SA0;GPIO_CLR = 1<<SA1;GPIO_CLR = 1<<SA2;
-#define W8 GPIO_CLR = 1<<SA0;GPIO_SET = 1<<SA1;GPIO_CLR = 1<<SA2;
-#define R8 GPIO_SET = 1<<SA0;GPIO_SET = 1<<SA1;GPIO_CLR = 1<<SA2;
-
-#define PAGE_SIZE (4*1024)
-#define BLOCK_SIZE (4*1024)
-
-#define GPIOSET(no, ishigh) \
-do { \
- if (ishigh) \
- set |= (1 << (no)); \
- else \
- reset |= (1 << (no)); \
-} while (0)
-
-
-#define MAX_RAM 0xFFFFFF
-
-
-/* Read/write macros */
-#define READ_BYTE(BASE, ADDR) (BASE)[ADDR]
-#define READ_WORD(BASE, ADDR) (((BASE)[ADDR]<<8) | \
- (BASE)[(ADDR)+1])
-#define READ_LONG(BASE, ADDR) (((BASE)[ADDR]<<24) | \
- ((BASE)[(ADDR)+1]<<16) | \
- ((BASE)[(ADDR)+2]<<8) | \
- (BASE)[(ADDR)+3])
-
-#define WRITE_BYTE(BASE, ADDR, VAL) (BASE)[ADDR] = (VAL)&0xff
-#define WRITE_WORD(BASE, ADDR, VAL) (BASE)[ADDR] = ((VAL)>>8) & 0xff; \
- (BASE)[(ADDR)+1] = (VAL)&0xff
-#define WRITE_LONG(BASE, ADDR, VAL) (BASE)[ADDR] = ((VAL)>>24) & 0xff; \
- (BASE)[(ADDR)+1] = ((VAL)>>16)&0xff; \
- (BASE)[(ADDR)+2] = ((VAL)>>8)&0xff; \
- (BASE)[(ADDR)+3] = (VAL)&0xff
-
-
-
-int mem_fd;
-int mem_fd_gpclk;
-void *gpio_map;
-void *gpclk_map;
-
-// I/O access
-volatile unsigned int *gpio;
-volatile unsigned int *gpclk;
-volatile unsigned int gpfsel0;
-volatile unsigned int gpfsel1;
-volatile unsigned int gpfsel2;
-volatile unsigned int gpfsel0_o;
-volatile unsigned int gpfsel1_o;
-volatile unsigned int gpfsel2_o;
-
-// GPIO setup macros. Always use INP_GPIO(x) before using OUT_GPIO(x) or SET_GPIO_ALT(x,y)
-#define INP_GPIO(g) *(gpio+((g)/10)) &= ~(7<<(((g)%10)*3))
-#define OUT_GPIO(g) *(gpio+((g)/10)) |= (1<<(((g)%10)*3))
-#define SET_GPIO_ALT(g,a) *(gpio+(((g)/10))) |= (((a)<=3?(a)+4:(a)==4?3:2)<<(((g)%10)*3))
-
-#define GPIO_SET *(gpio+7) // sets bits which are 1 ignores bits which are 0
-#define GPIO_CLR *(gpio+10) // clears bits which are 1 ignores bits which are 0
-
-#define GET_GPIO(g) (*(gpio+13)&(1<<g)) // 0 if LOW, (1<<g) if HIGH
-
-#define GPIO_PULL *(gpio+37) // Pull up/pull down
-#define GPIO_PULLCLK0 *(gpio+38) // Pull up/pull down clock
-
-
-void setup_io();
-
-uint32_t read8(uint32_t address);
-void write8(uint32_t address, uint32_t data);
-
-uint32_t read16(uint32_t address);
-void write16(uint32_t address, uint32_t data);
-
-void write32(uint32_t address, uint32_t data);
-uint32_t read32(uint32_t address);
-
-uint16_t read_reg(void);
-void write_reg(unsigned int value);
-
-volatile uint16_t srdata;
-volatile uint32_t srdata2;
-volatile uint32_t srdata2_old;
-
-
-unsigned char g_ram[MAX_RAM+1]; /* RAM */
-unsigned char toggle;
-
-
-void* iplThread(void *args){
-
-printf("thread!/n");
-//srdata2_old = read_reg();
-//toggle = 0;
-
-while(42){
-//printf("thread!/n");
- if (GET_GPIO(1) == 0){
- srdata = read_reg();
- if (srdata != srdata2_old){
- srdata2 = ((srdata >> 13)&0xff);
- //printf("STATUS: %d\n", srdata2);
- srdata2_old = srdata;
- m68k_set_irq(srdata2);
- toggle = 1;
- }
- } else {
- if (toggle != 0){
- srdata = read_reg();
- srdata2 = ((srdata >> 13)&0xff);
- srdata2_old = srdata;
- m68k_set_irq(srdata2);
- //printf("STATUS: 0\n");
- toggle = 0;
- }
- }
+#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 "gpio/gpio.h"
+
+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;
+
+extern volatile unsigned int *gpio;
+extern volatile uint16_t srdata;
+
+#define KICKBASE 0xF80000
+#define KICKSIZE 0x7FFFF
+
+int mem_fd, mouse_fd = -1, keyboard_fd = -1;
+int mem_fd_gpclk;
+int gayle_emulation_enabled = 1;
+
+// 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/event0";
+
+//unsigned char g_kick[524288];
+//unsigned char g_ram[FASTSIZE + 1]; /* RAM */
+int ovl;
+static volatile unsigned char maprom;
+
+void sigint_handler(int sig_num) {
+ //if (sig_num) { }
+ //cpu_emulation_running = 0;
+
+ //return;
+ printf("Received sigint %d, exiting.\n", sig_num);
+ if (mouse_fd != -1)
+ close(mouse_fd);
+ if (mem_fd)
+ close(mem_fd);
+
+ if (cfg->platform->shutdown) {
+ cfg->platform->shutdown(cfg);
+ }
- usleep(1);
- }
+ exit(0);
}
+int main(int argc, char *argv[]) {
+ int g;
+ 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 (g + 1 >= argc) {
+ printf("%s switch found, but no CPU type specified.\n", argv[g]);
+ } else {
+ g++;
+ cpu_type = get_m68k_cpu_type(argv[g]);
+ }
+ }
+ else if (strcmp(argv[g], "--config-file") == 0 || strcmp(argv[g], "--config") == 0) {
+ if (g + 1 >= argc) {
+ printf("%s switch found, but no config filename specified.\n", argv[g]);
+ } else {
+ g++;
+ cfg = load_config_file(argv[g]);
+ }
+ }
+ else if (strcmp(argv[g], "--keyboard-file") == 0 || strcmp(argv[g], "--kbfile") == 0) {
+ if (g + 1 >= argc) {
+ printf("%s switch found, but no keyboard device path specified.\n", argv[g]);
+ } else {
+ g++;
+ strcpy(keyboard_file, argv[g]);
+ }
+ }
+ }
-int main() {
-
-
-int g;
-
-
-const struct sched_param priority = {99};
-
- sched_setscheduler(0, SCHED_RR , &priority);
- printf("YES locked in memory\n");
- mlockall(MCL_CURRENT); // lock in memory to keep us from paging out
+ if (!cfg) {
+ printf("No config file specified. Trying to load default.cfg...\n");
+ cfg = load_config_file("default.cfg");
+ if (!cfg) {
+ printf("Couldn't load default.cfg, empty emulator config will be used.\n");
+ cfg = (struct emulator_config *)calloc(1, sizeof(struct emulator_config));
+ if (!cfg) {
+ printf("Failed to allocate memory for emulator config!\n");
+ return 1;
+ }
+ memset(cfg, 0x00, sizeof(struct emulator_config));
+ }
+ }
+ if (cfg) {
+ if (cfg->cpu_type) cpu_type = cfg->cpu_type;
+ if (cfg->loop_cycles) loop_cycles = cfg->loop_cycles;
- setup_io();
+ if (!cfg->platform)
+ cfg->platform = make_platform_config("none", "generic");
+ cfg->platform->platform_initial_setup(cfg);
+ }
- //Enable 200MHz CLK output on GPIO4, adjust divider and pll source depending on pi model
- printf("Enable GPCLK0 on GPIO4\n");
-
- *(gpclk+ (CLK_GP0_CTL/4)) = CLK_PASSWD | (1 << 5);
- usleep(10);
- while ( (*(gpclk+(CLK_GP0_CTL/4))) & (1 << 7));
- usleep(100);
- *(gpclk+(CLK_GP0_DIV/4)) = CLK_PASSWD | (6 << 12); //divider , 6=200MHz on pi3
- usleep(10);
- *(gpclk+(CLK_GP0_CTL/4)) = CLK_PASSWD | 5 | (1 << 4); //pll? 6=plld, 5=pllc
- usleep(10);
- while (((*(gpclk+(CLK_GP0_CTL/4))) & (1 << 7))== 0);
- usleep(100);
-
- SET_GPIO_ALT(4,0); //gpclk0
-
- //set SA to output
- INP_GPIO(2);
- OUT_GPIO(2);
- INP_GPIO(3);
- OUT_GPIO(3);
- INP_GPIO(5);
- OUT_GPIO(5);
-
- //set gpio0 (aux0) and gpio1 (aux1) to input
- INP_GPIO(0);
- INP_GPIO(1);
-
- // Set GPIO pins 6,7 and 8-23 to output
- for (g=6; g<=23; g++)
- {
- INP_GPIO(g);
- OUT_GPIO(g);
+ if (cfg->mouse_enabled) {
+ mouse_fd = open(cfg->mouse_file, O_RDONLY | O_NONBLOCK);
+ if (mouse_fd == -1) {
+ printf("Failed to open %s, can't enable mouse hook.\n", cfg->mouse_file);
+ cfg->mouse_enabled = 0;
+ }
}
- printf ("Precalculate GPIO8-23 aus Output\n");
- gpfsel0_o =*(gpio); //store gpio ddr
- printf ("gpfsel0: %#x\n", gpfsel0_o);
- gpfsel1_o =*(gpio+1); //store gpio ddr
- printf ("gpfsel1: %#x\n", gpfsel1_o);
- gpfsel2_o =*(gpio+2); //store gpio ddr
- printf ("gpfsel2: %#x\n", gpfsel2_o);
-
- // Set GPIO pins 8-23 to input
- for (g=8; g<=23; g++)
- {
- INP_GPIO(g);
+
+ keyboard_fd = open(keyboard_file, O_RDONLY | O_NONBLOCK);
+ if (keyboard_fd == -1) {
+ printf("Failed to open keyboard event source.\n");
}
- printf ("Precalculate GPIO8-23 as Input\n");
- gpfsel0 =*(gpio); //store gpio ddr
- printf ("gpfsel0: %#x\n", gpfsel0);
- gpfsel1 =*(gpio+1); //store gpio ddr
- printf ("gpfsel1: %#x\n", gpfsel1);
- gpfsel2 =*(gpio+2); //store gpio ddr
- printf ("gpfsel2: %#x\n", gpfsel2);
-
- GPIO_CLR = 1<<2;
- GPIO_CLR = 1<<3;
- GPIO_SET = 1<<5;
-
- GPIO_SET = 1<<6;
- GPIO_SET = 1<<7;
-
- //reset cpld statemachine first
-
- write_reg(0x01);
- usleep(100);
- write_reg(0x00);
- usleep(100);
-
-
- write8(0xbfe201,0x0001); //AMIGA OVL
- write8(0xbfe001,0x0001); //AMIGA OVL high (ROM@0x0)
-
- usleep(1000);
-
- m68k_init();
- m68k_set_cpu_type(M68K_CPU_TYPE_68040);
- m68k_pulse_reset();
- srdata2_old = read_reg();
- toggle = 0;
-
-/*
- pthread_t id;
- int err;
-
- //err = pthread_create(&id, NULL, &iplThread, NULL);
- if (err != 0)
- printf("\ncan't create IPL thread :[%s]", strerror(err));
- else
- printf("\n IPL Thread created successfully\n");
-*/
- m68k_pulse_reset();
- while(42) {
-
- m68k_execute(600);
- //usleep(1);
-
- if (GET_GPIO(1) == 0){
- srdata = read_reg();
- if (srdata != srdata2_old){
- srdata2 = ((srdata >> 13)&0xff);
- //printf("STATUS: %d\n", srdata2);
- srdata2_old = srdata;
- m68k_set_irq(srdata2);
- toggle = 1;
- }
- } else {
- if (toggle != 0){
- srdata = read_reg();
- srdata2 = ((srdata >> 13)&0xff);
- srdata2_old = srdata;
- m68k_set_irq(srdata2);
- //printf("STATUS: 0\n");
- toggle = 0;
- }
- }
-
-
- }
-
- return 0;
-}
+ sched_setscheduler(0, SCHED_FIFO, &priority);
+ mlockall(MCL_CURRENT); // lock in memory to keep us from paging out
+ InitGayle();
-void cpu_pulse_reset(void){
+ signal(SIGINT, sigint_handler);
+ setup_io();
- usleep(10000);
-}
+ //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);
-int cpu_irq_ack(int level)
-{
- printf("cpu irq ack\n");
- return level;
-}
+ // reset amiga and statemachine
+ skip_everything:;
+ cpu_pulse_reset();
+ ovl = 1;
+ m68k_write_memory_8(0xbfe201, 0x0001); // AMIGA OVL
+ m68k_write_memory_8(0xbfe001, 0x0001); // AMIGA OVL high (ROM@0x0)
+ usleep(1500);
+ m68k_init();
+ printf("Setting CPU type to %d.\n", cpu_type);
+ m68k_set_cpu_type(cpu_type);
+ m68k_pulse_reset();
-unsigned int m68k_read_memory_8(unsigned int address){
+ if (maprom == 1) {
+ m68k_set_reg(M68K_REG_PC, 0xF80002);
+ } else {
+ m68k_set_reg(M68K_REG_PC, 0x0);
+ }
- if(address>0x07FFFFFF){
- return g_ram[address- 0x07FFFFFF];
+ char c = 0;
+
+ m68k_pulse_reset();
+ while (42) {
+ if (mouse_hook_enabled) {
+ if (get_mouse_status(&mouse_dx, &mouse_dy, &mouse_buttons)) {
+ //printf("Maus: %d (%.2X), %d (%.2X), B:%.2X\n", mouse_dx, mouse_dx, mouse_dy, mouse_dy, mouse_buttons);
+ }
+ }
+
+ if (cpu_emulation_running)
+ m68k_execute(loop_cycles);
+
+ // FIXME: Rework this to use keyboard events instead.
+ /*while (get_key_char(&c)) {
+ if (c == cfg->keyboard_toggle_key && !kb_hook_enabled) {
+ kb_hook_enabled = 1;
+ printf("Keyboard hook enabled.\n");
+ }
+ else if (c == 0x1B && kb_hook_enabled) {
+ kb_hook_enabled = 0;
+ printf("Keyboard hook disabled.\n");
+ }
+ if (!kb_hook_enabled) {
+ if (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;
}
-
- return read8((uint32_t)address);
-}
-
-unsigned int m68k_read_memory_16(unsigned int address){
-
- if(address>0x07FFFFFF){
- uint16_t value = *(uint16_t*)&g_ram[address- 0x07FFFFFF];
- value = (value << 8) | (value >> 8);
- return value;
+ if (c == 'r') {
+ cpu_emulation_running ^= 1;
+ printf("CPU emulation is now %s\n", cpu_emulation_running ? "running" : "stopped");
}
- return (unsigned int)read16((uint32_t)address);
-}
-
-unsigned int m68k_read_memory_32(unsigned int address){
-
-
- if(address>0x07FFFFFF){
- uint32_t value = *(uint32_t*)&g_ram[address- 0x07FFFFFF];
- value = ((value << 8) & 0xFF00FF00 ) | ((value >> 8) & 0xFF00FF );
- return value << 16 | value >> 16;
+ if (c == 'R') {
+ cpu_pulse_reset();
+ m68k_pulse_reset();
+ printf("CPU emulation reset.\n");
}
-
- uint16_t a = read16(address);
- uint16_t b = read16(address+2);
- return (a << 16) | b;
-}
-
-void m68k_write_memory_8(unsigned int address, unsigned int value){
-
-
- if(address>0x07FFFFFF){
- g_ram[address- 0x07FFFFFF] = value;
- return;
+ if (c == 'q') {
+ printf("Quitting and exiting emulator.\n");
+ goto stop_cpu_emulation;
}
+ }
+ }*/
- write8((uint32_t)address,value);
- return;
-}
+ //gpio_handle_irq();
+ GPIO_HANDLE_IRQ;
+ }
-void m68k_write_memory_16(unsigned int address, unsigned int value){
-// if (address==0xdff030) printf("%c", value);
+ stop_cpu_emulation:;
- if(address>0x07FFFFFF){
- uint16_t* dest = (uint16_t*)&g_ram[address- 0x07FFFFFF];
- value = (value << 8) | (value >> 8);
- *dest = value;
- return;
- }
+ if (mouse_fd != -1)
+ close(mouse_fd);
+ if (mem_fd)
+ close(mem_fd);
- write16((uint32_t)address,value);
- return;
+ return 0;
}
-void m68k_write_memory_32(unsigned int address, unsigned int value){
-
-
- if(address>0x07FFFFFF){
- uint32_t* dest = (uint32_t*)&g_ram[address- 0x07FFFFFF];
- value = ((value << 8) & 0xFF00FF00 ) | ((value >> 8) & 0xFF00FF );
- value = value << 16 | value >> 16;
- *dest = value;
- return;
- }
-
- write16(address , value >> 16);
- write16(address+2 , value );
- return;
+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());
}
-void write32(uint32_t address, uint32_t data){
- write16(address+2 , data);
- write16(address , data >>16 );
+int cpu_irq_ack(int level) {
+ printf("cpu irq ack\n");
+ return level;
}
-uint32_t read32(uint32_t address){
- uint16_t a = read16(address+2);
- uint16_t b = read16(address);
- return (a>>16)|b;
-}
+static unsigned int target = 0;
+
+#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 (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 m68k_read_memory_8(unsigned int address) {
+ PLATFORM_CHECK_READ(OP_TYPE_BYTE);
-void write16(uint32_t address, uint32_t data)
-{
- asm volatile ("dmb" ::: "memory");
- W16
-// asm volatile ("nop" ::);
-// asm volatile ("nop" ::);
-// asm volatile ("nop" ::);
- //write phase
- *(gpio) = gpfsel0_o;
- *(gpio + 1) = gpfsel1_o;
- *(gpio + 2) = gpfsel2_o;
-
- *(gpio + 7) = (address & 0x0000ffff) << 8;
- *(gpio + 10) = (~address & 0x0000ffff) << 8;
- GPIO_CLR = 1 << 7;
-// GPIO_CLR = 1 << 7; //delay
- GPIO_SET = 1 << 7;
-
- *(gpio + 7) = (address >> 16) << 8;
- *(gpio + 10) = (~address >> 16) << 8;
- GPIO_CLR = 1 << 7;
-// GPIO_CLR = 1 << 7; //delay
- GPIO_SET = 1 << 7;
-
- //write phase
- *(gpio + 7) = (data & 0x0000ffff) << 8;
- *(gpio + 10) = (~data & 0x0000ffff) << 8;
- GPIO_CLR = 1 << 7;
-// GPIO_CLR = 1 << 7; //delay
- GPIO_SET = 1 << 7;
-
- *(gpio) = gpfsel0;
- *(gpio + 1) = gpfsel1;
- *(gpio + 2) = gpfsel2;
- while ((GET_GPIO(0)));
-
- asm volatile ("dmb" ::: "memory");
+ address &=0xFFFFFF;
+ return read8((uint32_t)address);
}
-
-void write8(uint32_t address, uint32_t data)
-{
-
- if ((address & 1) == 0)
- data = data + (data << 8); //EVEN, A0=0,UDS
- else data = data & 0xff ; //ODD , A0=1,LDS
-
- asm volatile ("dmb" ::: "memory");
- W8
-// asm volatile ("nop" ::);
-// asm volatile ("nop" ::);
-// asm volatile ("nop" ::);
- //write phase
- *(gpio) = gpfsel0_o;
- *(gpio + 1) = gpfsel1_o;
- *(gpio + 2) = gpfsel2_o;
-
- *(gpio + 7) = (address & 0x0000ffff) << 8;
- *(gpio + 10) = (~address & 0x0000ffff) << 8;
- GPIO_CLR = 1 << 7;
-// GPIO_CLR = 1 << 7; //delay
- GPIO_SET = 1 << 7;
-
- *(gpio + 7) = (address >> 16) << 8;
- *(gpio + 10) = (~address >> 16) << 8;
- GPIO_CLR = 1 << 7;
-// GPIO_CLR = 1 << 7; //delay
- GPIO_SET = 1 << 7;
-
- //write phase
- *(gpio + 7) = (data & 0x0000ffff) << 8;
- *(gpio + 10) = (~data & 0x0000ffff) << 8;
- GPIO_CLR = 1 << 7;
-// GPIO_CLR = 1 << 7; //delay
- GPIO_SET = 1 << 7;
-
- *(gpio) = gpfsel0;
- *(gpio + 1) = gpfsel1;
- *(gpio + 2) = gpfsel2;
- while ((GET_GPIO(0)));
-
- asm volatile ("dmb" ::: "memory");
-}
+unsigned int m68k_read_memory_16(unsigned int address) {
+ PLATFORM_CHECK_READ(OP_TYPE_WORD);
+
+ if (mouse_hook_enabled) {
+ if (address == JOY0DAT) {
+ // Forward mouse valueses to Amyga.
+ unsigned short result = (mouse_dy << 8) | (mouse_dx);
+ mouse_dx = mouse_dy = 0;
+ return (unsigned int)result;
+ }
+ if (address == CIAAPRA) {
+ unsigned short result = (unsigned int)read16((uint32_t)address);
+ if (mouse_buttons & 0x01) {
+ mouse_buttons -= 1;
+ 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) {
+ mouse_buttons -= 2;
+ return (unsigned int)(result | 0x2);
+ }
+ else
+ return (unsigned int)result;
+ }
+ }
-uint32_t read16(uint32_t address)
-{
- volatile int val;
-// while ((GET_GPIO(0)));
- asm volatile ("dmb" ::: "memory");
- R16
-// asm volatile ("nop" ::);
-// asm volatile ("nop" ::);
-// asm volatile ("nop" ::);
- //write phase
- *(gpio) = gpfsel0_o;
- *(gpio + 1) = gpfsel1_o;
- *(gpio + 2) = gpfsel2_o;
-
- val = address;// & 0x0000FFFF;
- *(gpio + 7) = (val & 0xffff) << 8;
- *(gpio + 10) = (~val & 0xffff) << 8;
-
- GPIO_CLR = 1 << 7;
-// GPIO_CLR = 1 << 7; //delay
- GPIO_SET = 1 << 7;
-
- val = address >> 16;
- *(gpio + 7) = (val & 0xffff) << 8;
- *(gpio + 10) = (~val & 0xffff) << 8;
- GPIO_CLR = 1 << 7;
-// GPIO_CLR = 1 << 7; //delay
- GPIO_SET = 1 << 7;
-
- //read phase
-
- *(gpio) = gpfsel0;
- *(gpio + 1) = gpfsel1;
- *(gpio + 2) = gpfsel2;
-
- GPIO_CLR = 1 << 6;
- while (!(GET_GPIO(0)));
- GPIO_CLR = 1 << 6;
- val = *(gpio + 13);
- GPIO_SET = 1 << 6;
- asm volatile ("dmb" ::: "memory");
- return (val >>8)&0xffff;
+ address &=0xFFFFFF;
+ return (unsigned int)read16((uint32_t)address);
}
+unsigned int m68k_read_memory_32(unsigned int address) {
+ PLATFORM_CHECK_READ(OP_TYPE_LONGWORD);
-uint32_t read8(uint32_t address)
-{
- int val;
-// while ((GET_GPIO(0)));
- asm volatile ("dmb" ::: "memory");
- R8
-// asm volatile ("nop" ::);
-// asm volatile ("nop" ::);
-// asm volatile ("nop" ::);
- //write phase
- *(gpio) = gpfsel0_o;
- *(gpio + 1) = gpfsel1_o;
- *(gpio + 2) = gpfsel2_o;
-
- val = address;// & 0x0000FFFF;
- *(gpio + 7) = (val & 0xffff) << 8;
- *(gpio + 10) = (~val & 0xffff) << 8;
-
- GPIO_CLR = 1 << 7;
-// GPIO_CLR = 1 << 7; //delay
- GPIO_SET = 1 << 7;
-
- val = address >> 16;
- *(gpio + 7) = (val & 0xffff) << 8;
- *(gpio + 10) = (~val & 0xffff) << 8;
- GPIO_CLR = 1 << 7;
-// GPIO_CLR = 1 << 7; //delay
- GPIO_SET = 1 << 7;
-
- //read phase
-
- *(gpio) = gpfsel0;
- *(gpio + 1) = gpfsel1;
- *(gpio + 2) = gpfsel2;
-
- GPIO_CLR = 1 << 6;
- while (!(GET_GPIO(0)));
- GPIO_CLR = 1 << 6;
- val = *(gpio + 13);
- GPIO_SET = 1 << 6;
- asm volatile ("dmb" ::: "memory");
-// return (val >>8)&0xffff;
-
- val = (val >>8)&0xffff;
- if ((address & 1) == 0)
- val = (val >> 8) & 0xff ; //EVEN, A0=0,UDS
- else
- val = val & 0xff ; //ODD , A0=1,LDS
- return val;
+ address &=0xFFFFFF;
+ uint16_t a = read16(address);
+ uint16_t b = read16(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 (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);
-/******************************************************/
-
-void write_reg(unsigned int value)
-{
- asm volatile ("dmb" ::: "memory");
- STATUSREGADDR
- asm volatile ("nop" ::);
- asm volatile ("nop" ::);
- asm volatile ("nop" ::);
- //Write Status register
- GPIO_CLR = 1 << SA0;
- GPIO_CLR = 1 << SA1;
- GPIO_SET = 1 << SA2;
-
- *(gpio) = gpfsel0_o;
- *(gpio + 1) = gpfsel1_o;
- *(gpio + 2) = gpfsel2_o;
- *(gpio + 7) = (value & 0xffff) << 8;
- *(gpio + 10) = (~value & 0xffff) << 8;
- GPIO_CLR = 1 << 7;
- GPIO_CLR = 1 << 7; //delay
- GPIO_SET = 1 << 7;
- GPIO_SET = 1 << 7;
- //Bus HIGH-Z
- *(gpio) = gpfsel0;
- *(gpio + 1) = gpfsel1;
- *(gpio + 2) = gpfsel2;
- asm volatile ("dmb" ::: "memory");
-}
-
+ if (address == 0xbfe001) {
+ if (ovl != (value & (1 << 0))) {
+ ovl = (value & (1 << 0));
+ printf("OVL:%x\n", ovl);
+ }
+ }
-uint16_t read_reg(void)
-{
- uint32_t val;
-
- asm volatile ("dmb" ::: "memory");
- STATUSREGADDR
- asm volatile ("nop" ::);
- asm volatile ("nop" ::);
- asm volatile ("nop" ::);
- //Bus HIGH-Z
- *(gpio) = gpfsel0;
- *(gpio + 1) = gpfsel1;
- *(gpio + 2) = gpfsel2;
-
- GPIO_CLR = 1 << 6;
- GPIO_CLR = 1 << 6; //delay
- GPIO_CLR = 1 << 6;
- GPIO_CLR = 1 << 6;
- val = *(gpio + 13);
- GPIO_SET = 1 << 6;
- asm volatile ("dmb" ::: "memory");
-
- return (uint16_t)(val >> 8);
+ address &=0xFFFFFF;
+ write8((uint32_t)address, value);
+ return;
}
+void m68k_write_memory_16(unsigned int address, unsigned int value) {
+ PLATFORM_CHECK_WRITE(OP_TYPE_WORD);
-//
-// Set up a memory regions to access GPIO
-//
-void setup_io()
-{
- /* open /dev/mem */
- if ((mem_fd = open("/dev/mem", O_RDWR|O_SYNC) ) < 0) {
- printf("can't open /dev/mem \n");
- exit(-1);
- }
-
- /* mmap GPIO */
- gpio_map = mmap(
- NULL, //Any adddress in our space will do
- BCM2708_PERI_SIZE, //Map length
- PROT_READ|PROT_WRITE,// Enable reading & writting to mapped memory
- MAP_SHARED, //Shared with other processes
- mem_fd, //File to map
- BCM2708_PERI_BASE //Offset to GPIO peripheral
- );
-
- close(mem_fd); //No need to keep mem_fd open after mmap
-
- if (gpio_map == MAP_FAILED) {
- printf("gpio mmap error %d\n", (int)gpio_map);//errno also set!
- exit(-1);
- }
-
- gpio = ((volatile unsigned *)gpio_map) + GPIO_ADDR/4;
- gpclk = ((volatile unsigned *)gpio_map) + GPCLK_ADDR/4;
-
+ address &=0xFFFFFF;
+ write16((uint32_t)address, value);
+ return;
+}
-} // setup_io
+void m68k_write_memory_32(unsigned int address, unsigned int value) {
+ PLATFORM_CHECK_WRITE(OP_TYPE_LONGWORD);
+ address &=0xFFFFFF;
+ write16(address, value >> 16);
+ write16(address + 2, value);
+ return;
+}
projects / pistorm / blobdiff