Isa Local Resource Bus; W83C553 Pib Registers; 16550 Uart; Table 1-16. 16550 Access Registers - Motorola MVME2300 Series Programmer's Reference Manual

ISA Local Resource Bus

W83C553 PIB Registers

The PIB contains ISA Bridge I/O registers for various functions. These
registers are actually accessible from the PCI bus. Refer to the W83C553
Data Book for details.

16550 UART

The 16550 UART provides the MVME2300 series boards with an
asynchronous serial port. Refer to the 16550 Data Sheet for additional
details and programming information.
The following table shows the mapping of the 16550 registers within the
MVME2300 series boards' ISA I/O space beginning at address 0x3F8:
ISA I/O Address
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Table 1-16. 16550 Access Registers

Receiver Buffer (Read);
0000 03F8
Transmitter Holding (Write)
0000 03F9 Interrupt Enable
Interrupt Identification (Read);
0000 03FA
FIFO Control (Write)
0000 03FB Line Control
0000 03FC MODEM control
0000 03FD Line Status
0000 03FE MODEM Status
0000 03FF Scratch
ISA Local Resource Bus
Function
1
1-31