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#include "System.h"
#include <stdio.h>
#define PSX_EXE_HEADER_SIZE 2048
#define EXE_DATA_PACKET_SIZE 8
int main(void)
{
SystemInit();
for (;;);
#if 0
{
uint32_t initPC_Address;
uint32_t RAMDest_Address;
uint32_t ExeSize = 0;
uint32_t i;
void (*exeAddress)(void);
GfxSetGlobalLuminance(0);
SerialInit();
/* Read PSX-EXE header (32 bytes will be enough). */
SerialSetState(SERIAL_STATE_READING_HEADER);
SerialRead(inBuffer, 32);
/* Get initial program counter address from PSX-EXE header. */
initPC_Address = (inBuffer[0x10] | (inBuffer[0x11] << 8) | (inBuffer[0x12] << 16) | (inBuffer[0x13] << 24) );
SerialSetPCAddress(initPC_Address);
/* dprintf("initPC_Address = 0x%08X\n", initPC_Address); */
/* Get destination address in RAM from PSX-EXE header. */
RAMDest_Address = (inBuffer[0x18] | (inBuffer[0x19] << 8) | (inBuffer[0x1A] << 16) | (inBuffer[0x1B] << 24) );
SerialSetRAMDestAddress(RAMDest_Address);
/* dprintf("RAMDest_Address = 0x%08X\n", RAMDest_Address); */
/* We have received all data correctly. Send ACK. */
memset(inBuffer, 0, SystemGetBufferSize());
SerialSetState(SERIAL_STATE_WRITING_ACK);
SerialWrite(ACK_BYTE_STRING, sizeof(uint8_t)); /* Write ACK */
/* Get PSX-EXE size, without header, in hexadecimal, little-endian format; */
SerialSetState(SERIAL_STATE_READING_EXE_SIZE);
SerialRead(inBuffer, sizeof(uint32_t) );
for (i = 0; i < sizeof(uint32_t); i++)
{
ExeSize |= inBuffer[i] << (i << 3); /* (i << 3) == (i * 8) */
}
SerialSetExeSize(ExeSize);
/* DEBUG_PRINT_VAR(ExeSize); */
SerialSetState(SERIAL_STATE_CLEANING_MEMORY);
exeAddress = (void*)initPC_Address;
/* Clean memory where EXE data will be loaded, just in case... */
memset((void*)RAMDest_Address, 0, (uint32_t)((uint32_t)(&_start) - (uint32_t)(RAMDest_Address) ) );
SerialSetState(SERIAL_STATE_WRITING_ACK);
/* We have received PSX-EXE size (without header) correctly. Send ACK. */
SerialWrite(ACK_BYTE_STRING, sizeof(uint8_t)); /* Write ACK */
SerialSetState(SERIAL_STATE_READING_EXE_DATA);
while (GfxIsGPUBusy() == true);
for (i = 0; i < ExeSize; i += EXE_DATA_PACKET_SIZE)
{
uint32_t bytes_to_read;
/* Read actual EXE data into proper RAM address. */
if ( (i + EXE_DATA_PACKET_SIZE) >= ExeSize)
{
bytes_to_read = ExeSize - i;
}
else
{
bytes_to_read = EXE_DATA_PACKET_SIZE;
}
SerialRead((uint8_t*)RAMDest_Address + i, bytes_to_read);
SerialSetExeBytesReceived(bytes_to_read);
SerialWrite(ACK_BYTE_STRING, sizeof(uint8_t)); /* Write ACK */
}
SetVBlankHandler(&ISR_SystemDefaultVBlank);
/* Make a pretty animation before exeting OpenSend application. */
EndAnimation();
PSX_DeInit();
/* PSX-EXE has been successfully loaded into RAM. Run executable! */
/* dprintf("Entering exe...\n"); */
exeAddress();
}
#endif
return 0;
}
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