basic emu skeleton and loop, CALL instruction & rel16 addr mode

src/bin/run88.rs

@@ -0,0 +1,14 @@
+use std::io::Read;
+
+extern crate vrtue;
+use vrtue::emu::pc::PC;
+
+fn main() -> Result<(), std::io::Error> {
+  let filename = std::env::args().nth(1).expect("Need filename argument");
+  let mut file = Vec::new();
+  std::fs::File::open(filename)?.read_to_end(&mut file)?;
+  let mut pc = PC::new_with_com_file(&file);
+  pc.run();
+  println!("{:?}", pc);
+  Ok(())
+}