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24bit address space opened and masked to fpga

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This commit is contained in:
Claude
2020-11-24 18:38:00 +00:00
parent d1ec44a9e6
commit f9960b0338
1 changed files with 54 additions and 28 deletions
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82
emulator.c
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@@ -137,11 +137,20 @@ void sigint_handler(int sig_num) {
}
void *iplThread(void *args) {
printf("thread!/n");
printf("IPL thread running/n");
while (42) {
if (GET_GPIO(1) == 0){
toggle = 1;
m68k_end_timeslice();
//printf("thread!/n");
} else {
toggle = 0;
};
usleep(1);
}
}
int main() {
@@ -259,7 +268,7 @@ int main() {
usleep(1500);
m68k_init();
m68k_set_cpu_type(M68K_CPU_TYPE_68040);
m68k_set_cpu_type(M68K_CPU_TYPE_68030);
m68k_pulse_reset();
if (maprom == 1) {
@@ -268,19 +277,30 @@ int main() {
m68k_set_reg(M68K_REG_PC, 0x0);
}
/*
pthread_t id;
int err;
//err = pthread_create(&id, NULL, &iplThread, NULL);
/*
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(300);
m68k_execute(30000);
/*
if (toggle == 1){
srdata = read_reg();
m68k_set_irq((srdata >> 13) & 0xff);
} else {
m68k_set_irq(0);
};
usleep(1);
*/
if (GET_GPIO(1) == 0){
srdata = read_reg();
@@ -325,11 +345,12 @@ unsigned int m68k_read_memory_8(unsigned int address) {
return readGayleB(address);
}
if (address < 0xffffff) {
address &=0xFFFFFF;
// if (address < 0xffffff) {
return read8((uint32_t)address);
}
// }
return 1;
// return 1;
}
unsigned int m68k_read_memory_16(unsigned int address) {
@@ -347,11 +368,12 @@ unsigned int m68k_read_memory_16(unsigned int address) {
return readGayle(address);
}
if (address < 0xffffff) {
// if (address < 0xffffff) {
address &=0xFFFFFF;
return (unsigned int)read16((uint32_t)address);
}
// }
return 1;
// return 1;
}
unsigned int m68k_read_memory_32(unsigned int address) {
@@ -369,13 +391,14 @@ unsigned int m68k_read_memory_32(unsigned int address) {
return readGayleL(address);
}
if (address < 0xffffff) {
// if (address < 0xffffff) {
address &=0xFFFFFF;
uint16_t a = read16(address);
uint16_t b = read16(address + 2);
return (a << 16) | b;
}
// }
return 1;
// return 1;
}
void m68k_write_memory_8(unsigned int address, unsigned int value) {
@@ -388,18 +411,19 @@ void m68k_write_memory_8(unsigned int address, unsigned int value) {
writeGayleB(address, value);
return;
}
/*
if (address == 0xbfe001) {
ovl = (value & (1 << 0));
printf("OVL:%x\n", ovl);
}
if (address < 0xffffff) {
*/
// if (address < 0xffffff) {
address &=0xFFFFFF;
write8((uint32_t)address, value);
return;
}
// }
return;
// return;
}
void m68k_write_memory_16(unsigned int address, unsigned int value) {
@@ -413,11 +437,12 @@ void m68k_write_memory_16(unsigned int address, unsigned int value) {
return;
}
if (address < 0xffffff) {
// if (address < 0xffffff) {
address &=0xFFFFFF;
write16((uint32_t)address, value);
return;
}
return;
// }
// return;
}
void m68k_write_memory_32(unsigned int address, unsigned int value) {
@@ -430,13 +455,14 @@ void m68k_write_memory_32(unsigned int address, unsigned int value) {
writeGayleL(address, value);
}
if (address < 0xffffff) {
// if (address < 0xffffff) {
address &=0xFFFFFF;
write16(address, value >> 16);
write16(address + 2, value);
return;
}
// }
return;
// return;
}
void write16(uint32_t address, uint32_t data) {