#include "ram.h"
#include <cstring>

RAM::RAM(u16 size) : size(size), readonly(false) {
  memory = new u8[size];
  std::memset(memory, 0, sizeof(u8) * size);
}

RAM::RAM(u8* memory, u16 size, bool readonly)
  : memory(memory), size(size), readonly(readonly)
{}

void RAM::write8(u16 addr, u8 data) {
  if(addr >= size || readonly) return;
  memory[addr] = data;
}

u8 RAM::read8(u16 addr) {
  if (addr >= size) return 0xFFu;
  return memory[addr];
}