Contec IPC Series User Manual page 80

Table 6.3. Function of Each Register < 1 / 4 >
I/O address
03F8H
THR: Transmitter Holding Register [DLAB=0]
Register dedicated to write transmitted data to
03F8H
RBR: Reciever Buffer Register [DLAB=O]
Register dedicated to read received data from
03F8H
DLL: Divisor Latch (LSB) [DLAB=1]
Baud rate setting register (LSB)
03F9H
DLH: Divisor Latch (MSB) [DLAB=1]
Baud rate setting register (MSB)
03F9H
IER: Interrupt Enable Register [DLAB=0]
80
Description
PT-S2000HX/HXC/LX/LXC Series User's Manual