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Update to bsnes v015 rc2 release.

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This commit is contained in:
byuu
2006-04-20 00:26:54 +00:00
parent 49c39e0e4d
commit 9f63cb1b99
228 changed files with 17735 additions and 8983 deletions
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166
src/chip/srtc/srtc.cpp
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@@ -77,8 +77,8 @@ tm *t;
void SRTC::init() {}
void SRTC::enable() {
r_mem->set_mmio_mapper(0x2800, mmio);
r_mem->set_mmio_mapper(0x2801, mmio);
r_mem->set_mmio_mapper(0x2800, this);
r_mem->set_mmio_mapper(0x2801, this);
}
void SRTC::power() {
@@ -88,7 +88,35 @@ void SRTC::power() {
void SRTC::reset() {
srtc.index = -1;
srtc.mode = SRTC_READ;
srtc.mode = SRTC_READ;
}
uint8 SRTC::mmio_read(uint16 addr) {
switch(addr) {
case 0x2800: {
if(srtc.mode == SRTC_READ) {
if(srtc.index < 0) {
set_time();
srtc.index++;
return 0x0f; //send start message
} else if(srtc.index > MAX_SRTC_INDEX) {
srtc.index = -1;
return 0x0f; //send finished message
} else {
return srtc.data[srtc.index++];
}
} else {
return 0x00;
}
} break;
case 0x2801: {
} break;
}
return r_cpu->regs.mdr;
}
//Please see notes above about the implementation of the S-RTC
@@ -96,90 +124,66 @@ void SRTC::reset() {
//as reads will refresh the data array with the current system
//time. The write method is only here for the sake of faux
//emulation of the real hardware.
void SRTC::write(uint8 data) {
data &= 0x0f; //only the low four bits are used
void SRTC::mmio_write(uint16 addr, uint8 data) {
switch(addr) {
if(data >= 0x0d) {
switch(data) {
case 0x0d:
srtc.mode = SRTC_READ;
srtc.index = -1;
break;
case 0x0e:
srtc.mode = SRTC_COMMAND;
break;
case 0x0f:
//unknown behaviour
break;
case 0x2800: {
} break;
case 0x2801: {
data &= 0x0f; //only the low four bits are used
if(data >= 0x0d) {
switch(data) {
case 0x0d:
srtc.mode = SRTC_READ;
srtc.index = -1;
break;
case 0x0e:
srtc.mode = SRTC_COMMAND;
break;
case 0x0f:
//unknown behaviour
break;
}
return;
}
return;
}
if(srtc.mode == SRTC_WRITE) {
if(srtc.index >= 0 && srtc.index < MAX_SRTC_INDEX) {
srtc.data[srtc.index++] = data;
if(srtc.mode == SRTC_WRITE) {
if(srtc.index >= 0 && srtc.index < MAX_SRTC_INDEX) {
srtc.data[srtc.index++] = data;
if(srtc.index == MAX_SRTC_INDEX) {
//all S-RTC data has been loaded by program
srtc.data[srtc.index++] = 0x00; //day_of_week
if(srtc.index == MAX_SRTC_INDEX) {
//all S-RTC data has been loaded by program
srtc.data[srtc.index++] = 0x00; //day_of_week
}
}
} else if(srtc.mode == SRTC_COMMAND) {
switch(data) {
case SRTC_COMMAND_CLEAR:
memset(srtc.data, 0, MAX_SRTC_INDEX + 1);
srtc.index = -1;
srtc.mode = SRTC_READY;
break;
case SRTC_COMMAND_WRITE:
srtc.index = 0;
srtc.mode = SRTC_WRITE;
break;
default:
//unknown behaviour
srtc.mode = SRTC_READY;
break;
}
} else {
if(srtc.mode == SRTC_READ) {
//ignore writes while in read mode
} else if(srtc.mode == SRTC_READY) {
//unknown behaviour
}
}
} else if(srtc.mode == SRTC_COMMAND) {
switch(data) {
case SRTC_COMMAND_CLEAR:
memset(srtc.data, 0, MAX_SRTC_INDEX + 1);
srtc.index = -1;
srtc.mode = SRTC_READY;
break;
case SRTC_COMMAND_WRITE:
srtc.index = 0;
srtc.mode = SRTC_WRITE;
break;
default:
//unknown behaviour
srtc.mode = SRTC_READY;
break;
}
} else {
if(srtc.mode == SRTC_READ) {
//ignore writes while in read mode
} else if(srtc.mode == SRTC_READY) {
//unknown behaviour
}
} break;
}
}
uint8 SRTC::read() {
if(srtc.mode == SRTC_READ) {
if(srtc.index < 0) {
set_time();
srtc.index++;
return 0x0f; //send start message
} else if(srtc.index > MAX_SRTC_INDEX) {
srtc.index = -1;
return 0x0f; //send finished message
} else {
return srtc.data[srtc.index++];
}
} else {
return 0x00;
}
}
SRTC::SRTC() {
mmio = new SRTCMMIO();
}
uint8 SRTCMMIO::read(uint32 addr) {
switch(addr) {
case 0x2800:return srtc->read();
}
return r_cpu->regs.mdr;
}
void SRTCMMIO::write(uint32 addr, uint8 value) {
switch(addr) {
case 0x2801:srtc->write(value);break;
}
}
SRTC::SRTC() {}