I had an Atari 800, with an MPP-1000c modem. Those babies could, when connected to another modem of the same model, push the speed up to 450 baud. They were odd

I had an Atari 800, with an MPP-1000c modem. Those babies could, when connected to another modem of the same model, push the speed up to 450 baud. They were odd devices, connecting to the computer through one of its joystick ports.