public static ApplesoftProgram fromMemory(RAM memory) {
int startAddress = memory.readWordRaw(startingAddressPointer);
int nextCheck = memory.readWordRaw(startAddress);
int pos = startAddress;
List<Byte> bytes = new ArrayList<>();
while (nextCheck != 0) {
while (pos < nextCheck + 2) {
bytes.add(memory.readRaw(pos++));
}
nextCheck = memory.readWordRaw(nextCheck);
}
return fromBinary(bytes, startAddress);
}
public static void brun(File binary, int address) throws FileNotFoundException, IOException {
// If it was halted already, then it was initiated outside of an opcode execution
// If it was not yet halted, then it is the case that the CPU is processing another opcode
// So if that is the case, the program counter will need to be decremented here to compensate
// TODO: Find a better mousetrap for this one -- it's an ugly hack
Emulator.computer.pause();
FileInputStream in = new FileInputStream(binary);
byte[] data = new byte[in.available()];
in.read(data);
RAM ram = Emulator.computer.getMemory();
for (int i = 0; i < data.length; i++) {
ram.write(address + i, data[i], false, true);
}
CPU cpu = Emulator.computer.getCpu();
Emulator.computer.getCpu().setProgramCounter(address);
Emulator.computer.resume();
}
public void run() {
RAM memory = Emulator.computer.memory;
Emulator.computer.pause();
int pos = memory.readWordRaw(startingAddressPointer);
for (Line line : lines) {
int nextPos = pos + line.getLength() + 1;
memory.write(pos++, (byte) (nextPos & 0x0ff), false, true);
memory.write(pos++, (byte) (nextPos >> 8 & 0x0ff), false, true);
memory.write(pos++, (byte) (line.getNumber() & 0x0ff), false, true);
memory.write(pos++, (byte) (line.getNumber() >> 8 & 0x0ff), false, true);
boolean isFirst = true;
for (Command command : line.getCommands()) {
if (!isFirst) {
memory.write(pos++, (byte) ':', false, true);
}
isFirst = false;
for (Command.ByteOrToken part : command.parts) {
memory.write(pos++, part.getByte(), false, true);
}
}
memory.write(pos++, (byte) 0, false, true);
}
memory.write(pos++, (byte) 0, false, true);
memory.write(pos++, (byte) 0, false, true);
memory.write(pos++, (byte) 0, false, true);
memory.write(pos++, (byte) 0, false, true);
// Emulator.computer.cpu.setProgramCounter(BASIC_RUN);
Emulator.computer.resume();
}