Descriptions
The GM16C550 is an asynchronous communi-
cations element (ACE) that is functionally
equivalent to the GM16C450, and addition-ally
incorporates a 16byte FIFOs are available on both
the transmitter and receiver, and can be activated by
placing the device in the FIFO mode. After a reset,
the registers of the GM16C550 are identical to those
of the GM16C450.
The UART performs serial-to-parallel conver- sion
on data characters received from a peri-pheral
device or a MODEM, and parallel-to- serial
conversion on data characters received? from the
CPU.? The CPU can read the com-? plete status of
the UART at any time during?? the functional
operation. Status information reported includes the
type and condition of??? the transfer operations
being performed by??? the UART, as well as any
error conditions? (parity, overrun, framing, or break
interrupt).