oboy/src/cpu.ml

(** http://bgb.bircd.org/pandocs.htm#cpuregistersandflags *)

type registers = {
  a : char; (* accumulator *)
  b : char;
  c : char;
  d : char;
  e : char;
  h : char;
  l : char;

  sp : int; (* stack pointer *)
  pc : int; (* program counter *)
}

type flags = {
  z  : bool; (* zero *)
  n  : bool; (* substraction *)
  h  : bool; (* half-carry *)
  cy : bool; (* carry *)
}

type t = {
  reg : registers;
  flags : flags;
}