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Chapter 1 Hardware Installation 27
Step 10 Connect I/O
Onboard Adapters The MegaRUM PCI motherboard has:
•
two serial ports (J8 and J9),
•
a parallel port (J2),
•
two Ultra Wide SCSI connectors,
•
two Ultra narrow SCSI connectors,
•
an IDE controller on the PCI bus (the primary IDE connector is J12 and the secondary IDE connector is
J10), and
•
a floppy controller (J1).
The serial and parallel port connectors are described below.
Conflicts AMIBIOS minimizes conflicts between onboard and offboard I/O devices.
AMIBIOS automatically checks the adapter cards installed in the expansion
slots on the MegaRUM PCI motherboard for a hard disk or floppy controller
and serial or parallel ports.
J8 SER1 J9 SER2 J8 and J9 are 9-pin connectors that provide an AT-compatible serial port
interface. Connect the cables supplied with the motherboard to J8 and J9. The
serial port base I/O port address and other serial port settings can be selected
in Peripheral Setup in WINBIOS® Setup.
The J8 and J9 pinout is shown below.
Pin Signal Description Pin Signal Description
1 Carrier Detect 6 Data Set Ready
2 Receive Data 7 Request to Send
3 Transmit Data 8 Clear to Send
4 Data Terminal
Ready
9 Ring Indicator
5 Ground 10 CUT PIN
Cont’d