Chip_INIT_RESULT Chip8EOSLogicN::ChipInit(void) {
Chip_INIT_RESULT rtn = updataFPGA();
if( rtn == succeed ) {
initRegs();//temp test
}
return rtn;
}
Registers::Registers()
{
initRegs();
initRegsFloat();
}
// STARTER SCRIPT:
// 1. load 43 ('+') to R2
// 2. print contents of R2
// 3. load 1 into R1
// 4. terminate
// |1 |2 |3 |4
// python bc.py "[0,2,43,0, 3,2,0,0, 0,1,1,0, 0,0,0,0]." > bytecode.txt
int main(int argc, char** argv) {
// Local variables:
VMContext vm;
Reg r[16];
FunPtr funs[4];
uint32_t i;
uint32_t* pc; // Program-Counter (PC)
// Bytecode-loading helper variables:
FILE* bytecodeFile;
char buffer[256];
// Load code:
if(argc >= 1) {
bytecodeFile = fopen(argv[1], "rb");
} else {
printf("USAGE: example [FILE]\n");
return 1; // If no bytecode provided, bail out.
}
if(bytecodeFile == NULL) {
printf("Could not load bytecode file \'%s\'.\n", argv[1]);
return 1; // If a file read error happeneded, bail out.
}
// fread returns the number of bytes read; we don't need
// that info in this demo, however.
fread((void*)&buffer, 1, 12, bytecodeFile);
// Close what we opened
fclose(bytecodeFile);
// Initialize funptr table:
funs[0] = loadNToReg;
funs[1] = addReg;
funs[2] = subReg;
funs[3] = printReg;
// Initialize registers:
initRegs(r, 16);
// Initialize vm context:
initVMContext(&vm, 16, 4, r, funs);
// Set Program Counter (PC) to start of opcode buffer:
pc = (uint32_t*) &buffer;
// Main loop:
i = 0;
while(r[1].value < 1) {
printf("Running instr: %d -> '%d', '%d', '%d', '%d'\n", i,
EXTRACT_B0(*pc),
EXTRACT_B1(*pc),
EXTRACT_B2(*pc),
EXTRACT_B3(*pc));
stepVMContext(&vm, &pc);
i++;
}
// Return 0 to indicate normal termination.
return 0;
}