+// 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/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>
#define KEY_POLL_INTERVAL_MSEC 5000
-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];
-
int kb_hook_enabled = 0;
int mouse_hook_enabled = 0;
int cpu_emulation_running = 1;
extern uint8_t gayle_a4k_int;
extern volatile unsigned int *gpio;
extern volatile uint16_t srdata;
-extern uint8_t realtime_graphics_debug;
+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;
+uint8_t end_signal = 0, load_new_config = 0;
char disasm_buf[4096];
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);
+ 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
struct emulator_config *cfg = NULL;
char keyboard_file[256] = "/dev/input/event1";
-uint64_t trig_irq = 0, serv_irq = 0;
-uint16_t irq_delay = 0;
-unsigned int amiga_reset=0, amiga_reset_last=0;
-unsigned int do_reset=0;
+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) {
value = *(gpio + 13);
+ if (value & (1 << PIN_TXN_IN_PROGRESS))
+ goto noppers;
if (!(value & (1 << PIN_IPL_ZERO))) {
- irq = 1;
old_irq = irq_delay;
- //NOP
- M68K_END_TIMESLICE;
- NOP
- //usleep(0);
+ if (!irq) {
+ irq = 1;
+ MEMORY_BARRIER();
+ M68K_END_TIMESLICE;
+ }
}
else {
if (irq) {
else {
irq = 0;
}
+ MEMORY_BARRIER();
M68K_END_TIMESLICE;
- NOP
- //usleep(0);
}
}
- if(do_reset==0)
+ if(do_reset.value==0)
{
amiga_reset=(value & (1 << PIN_RESET));
if(amiga_reset!=amiga_reset_last)
if(amiga_reset==0)
{
printf("Amiga Reset is down...\n");
- do_reset=1;
+ do_reset.value=1;
+ MEMORY_BARRIER();
M68K_END_TIMESLICE;
}
else
else
gayleirq = 0;
}*/
- //usleep(0);
- //NOP NOP
+
+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
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;
+
+ unsigned int value = *(gpio + 13);
+
+ *(gpio + 10) = 0xffffec;
+
+ return (value >> 8) & 0xffff;
+}
+
void *cpu_task() {
- m68k_pulse_reset();
+ m68ki_cpu_core *state = &m68ki_cpu;
+ m68k_pulse_reset(state);
cpu_loop:
if (mouse_hook_enabled) {
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);
+ m68k_execute(state, 1);
}
else {
- if (cpu_emulation_running)
- m68k_execute(loop_cycles);
+ if (cpu_emulation_running) {
+ MEMORY_BARRIER();
+ if (irq)
+ m68k_execute(state, 5);
+ else
+ m68k_execute(state, loop_cycles);
+ }
}
- if (irq) {
- while (irq) {
- last_irq = ((read_reg() & 0xe000) >> 13);
- if (last_irq != last_last_irq) {
+ 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(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);
+ m68k_execute(state, 50);
+ MEMORY_BARRIER();
+ }
+
+ MEMORY_BARRIER();
+ if (!irq && last_last_irq != 0) {
+ //M68K_SET_IRQ(0);
last_last_irq = 0;
- m68k_execute(5);
}
- /*else {
- if (last_irq != 0) {
- M68K_SET_IRQ(0);
- last_last_irq = last_irq;
- last_irq = 0;
- }
- }*/
- if (do_reset) {
+
+ MEMORY_BARRIER();
+ if (do_reset.value) {
cpu_pulse_reset();
- m68k_pulse_reset();
- do_reset=0;
+ do_reset.value=0;
usleep(1000000); // 1sec
+ rtg_on=0;
// while(amiga_reset==0);
// printf("CPU emulation reset.\n");
}
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 stop_cpu_emulation;
goto cpu_loop;
}
if (c == 'q') {
printf("Quitting and exiting emulator.\n");
- end_signal = 1;
+ end_signal = 1;
goto key_end;
}
if (c == 'd') {
cfg->platform->shutdown(cfg);
}
- printf("IRQs triggered: %lld\n", trig_irq);
- printf("IRQs serviced: %lld\n", serv_irq);
+ while (!emulator_exiting) {
+ emulator_exiting = 1;
+ usleep(0);
+ }
+
exit(0);
}
int main(int argc, char *argv[]) {
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]);
- }
+ ps_setup_protocol();
+
+ //const struct sched_param priority = {99};
// Some command line switch stuffles
for (g = 1; g < argc; g++) {
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");
InitGayle();
signal(SIGINT, sigint_handler);
- /*setup_io();
-
- //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);
-
- // reset amiga and statemachine
- skip_everything:;
-
- usleep(1500);
-
- m68k_init();
- printf("Setting CPU type to %d.\n", cpu_type);
- m68k_set_cpu_type(cpu_type);
- cpu_pulse_reset();
-
- if (maprom == 1) {
- m68k_set_reg(M68K_REG_PC, 0xF80002);
- } else {
- m68k_set_reg(M68K_REG_PC, 0x0);
- }*/
- ps_setup_protocol();
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();
- pthread_t ipl_tid, cpu_tid, kbd_tid;
+ pthread_t ipl_tid = 0, cpu_tid, kbd_tid;
int err;
- err = pthread_create(&ipl_tid, NULL, &ipl_task, NULL);
- if (err != 0)
- printf("[ERROR] Cannot create IPL thread: [%s]", strerror(err));
- else {
- pthread_setname_np(ipl_tid, "pistorm: ipl");
- printf("IPL thread created successfully\n");
+ 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 {
+ pthread_setname_np(ipl_tid, "pistorm: ipl");
+ printf("IPL thread created successfully\n");
+ }
}
// create keyboard task
// 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");
+
+ while (!emulator_exiting) {
+ emulator_exiting = 1;
+ usleep(0);
+ }
+
+ 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) {
+ m68ki_cpu_core *state = &m68ki_cpu;
ps_pulse_reset();
- //write_reg(0x00);
- // printf("Status Reg%x\n",read_reg());
- //usleep(100000);
- //write_reg(0x02);
- // printf("Status Reg%x\n",read_reg());
- 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)
+ 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 (m68k_get_reg(NULL, M68K_REG_PC) >= 0x080032F0 && m68k_get_reg(NULL, M68K_REG_PC) <= 0x080032F0 + 0x4000) {
- stop_cpu_emulation(1);
- }*/
+ *(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;
- if (address & 0xFF000000)
- return 0;
+ *(gpio + 0) = GPFSEL0_INPUT;
+ *(gpio + 1) = GPFSEL1_INPUT;
+ *(gpio + 2) = GPFSEL2_INPUT;
- unsigned char result = (unsigned int)read8((uint32_t)address);
+ while (*(gpio + 13) & (1 << PIN_TXN_IN_PROGRESS)) {}
+ NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP
+}
- if (mouse_hook_enabled) {
- if (address == CIAAPRA) {
- if (mouse_buttons & 0x01) {
- //mouse_buttons -= 1;
- return (unsigned int)(result ^ 0x40);
- }
+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
- return (unsigned int)result;
- }
+ *(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);
}
+ // This shouldn't actually happen.
+ return 0;
+}
- if (kb_hook_enabled) {
- if (address == CIAAICR) {
- if (get_num_kb_queued() && (!send_keypress || send_keypress == 1)) {
- result |= 0x08;
- if (!send_keypress)
- send_keypress = 1;
+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;
}
- if (send_keypress == 2) {
- //result |= 0x02;
- send_keypress = 0;
+
+ 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;
- }
- 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;
- //M68K_SET_IRQ(0);
- //}
- 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 result;
+ return 0;
}
-unsigned int m68k_read_memory_16(unsigned int address) {
- PLATFORM_CHECK_READ(OP_TYPE_WORD);
+unsigned int m68k_read_memory_8(unsigned int address) {
+ if (platform_read_check(OP_TYPE_BYTE, address, &platform_res)) {
+ return platform_res;
+ }
- /*if (m68k_get_reg(NULL, M68K_REG_PC) >= 0x080032F0 && m68k_get_reg(NULL, M68K_REG_PC) <= 0x080032F0 + 0x4000) {
- stop_cpu_emulation(1);
- }*/
+ if (address & 0xFF000000)
+ return 0;
- /*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;
- }*/
+ return (unsigned int)inline_read_8((uint32_t)address);
+}
- 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);
- // 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
- }
- return (unsigned int)(result & 0xfffd);
- }
+unsigned int m68k_read_memory_16(unsigned int address) {
+ 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 (m68k_get_reg(NULL, M68K_REG_PC) >= 0x080032F0 && m68k_get_reg(NULL, M68K_REG_PC) <= 0x080032F0 + 0x4000) {
- stop_cpu_emulation(1);
- }*/
-
- /*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 *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)) {
- if (value & 0x04) {
- int2_enabled = 0;
- }
- }
- else if (value & 0x04) {
- int2_enabled = 1;
- }
- }
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