Serial Ports - American Megatrends Merlin User Manual

Step 5 Attach Cables,
Onboard Adapters
Conflicts
J13 SER1 J12 SER2 J13 and J12 are 10-pin connectors that provide an
Pin Description
1 Carrier Detect
2 Receive Data
3 Transmit Data
4 Data Terminal
5
24 Merlin PCI Motherboard User's Guide
Continued
The Merlin PCI motherboard has:
two serial ports (J12 and J13),
a parallel port (J1),
an IDE controller on the PCI bus. The primary
IDE connector is J2.
The secondary IDE connector is J7.
a floppy controller (J6).
The serial and parallel port connectors are described
below. The IDE connector is described on page
The floppy connector is described on page
AMIBIOS minimizes conflicts between onboard and
offboard I/O devices.
AMIBIOS automatically checks the adapter cards
installed in the expansion slots on the Merlin PCI
motherboard for a hard disk or floppy controller and
serial or parallel ports.
AT-compatible serial port interface. Connect the
cables supplied with the motherboard to J13 and
J12. The serial port base I/O port address and other
serial port settings can be selected in Peripheral
Setup in WINBIOS Setup.
The J13 and J12 pinout is shown below.
Ready
Ground
Pin Signal Description
6 Data Set Ready
7 Request to Send
8 Clear to Send
9 Ring Indicator
10 CUT PIN
27 .
25 .
Cont'd