public Machine7800(DeserializationContext input, ReadOnlyMemory <uint> palette, int scanlines) : base(input, palette)
        {
            input.CheckVersion(1);

            Mem = input.ReadAddressSpace(this, 16, 6);  // 7800: 16bit, 64byte pages

            CPU = input.ReadM6502(this, 4);

            Maria = input.ReadMaria(this, scanlines);
            Mem.Map(0x0000, 0x0040, Maria);
            Mem.Map(0x0100, 0x0040, Maria);
            Mem.Map(0x0200, 0x0040, Maria);
            Mem.Map(0x0300, 0x0040, Maria);

            PIA = input.ReadPIA(this);
            Mem.Map(0x0280, 0x0080, PIA);
            Mem.Map(0x0480, 0x0080, PIA);
            Mem.Map(0x0580, 0x0080, PIA);

            RAM1 = input.ReadRAM6116();
            RAM2 = input.ReadRAM6116();
            Mem.Map(0x1800, 0x0800, RAM1);
            Mem.Map(0x2000, 0x0800, RAM2);

            Mem.Map(0x0040, 0x00c0, RAM2); // page 0 shadow
            Mem.Map(0x0140, 0x00c0, RAM2); // page 1 shadow
            Mem.Map(0x2800, 0x0800, RAM2); // shadow1
            Mem.Map(0x3000, 0x0800, RAM2); // shadow2
            Mem.Map(0x3800, 0x0800, RAM2); // shadow3

            BIOS = input.ReadOptionalBios7800();
            HSC  = input.ReadOptionalHSC7800();

            if (HSC != HSC7800.Default)
            {
                Mem.Map(0x1000, 0x800, HSC.SRAM);
                Mem.Map(0x3000, 0x1000, HSC);
            }

            Cart = input.ReadCart(this);
            Mem.Map(0x4000, 0xc000, Cart);
        }