//! Memory-mapped I/O of the HP48: the 64-nibble HDW register window, the two
//! hardware timers, the UART and the keyboard matrix; and the 42S's Lewis
//! display and register block.
//!
//! wiki: hardware/io-ram, wiki: hardware/timers, wiki: hardware/uart,
//! wiki: hardware/keyboard
//!
//! Public: only [`Key`], the keys hosts press through
//! [`Machine::key_down`](crate::Machine::key_down).
pub
pub
pub
pub
pub
pub
pub
pub
pub use Key;
pub use ;
pub use LewisIo;
pub use IoRegisters;
pub use Timers;
pub use Uart;