1-10 Technical Information
Table 1-2 System Board Feature Components
Chip
Function
The 1 x 2-pin chassis security header (J0A1)
can be connected to a normally-open
mechanical switch on the chassis. See
Appendix A, “Connector Pin Assignments” for
the location and pinouts of the chassis security
header.
National PC97307 Super I/O
controller
The PC97307 Super I/O controller is an ISA
Plug and Play compatible multifunction I/O
device that provides the following features.
Serial ports:
•
Two 16450/16550A-software compatible
UARTs
•
Internal send/receive 16-byte FIFO buffer
•
Four internal 8-bit DMA options for the
UART with SIR support (USI)
Multimode bidirectional parallel port:
•
Standard mode: IBM and Centronics
compatible
•
Enhanced parallel port (EPP) mode with
BIOS and driver support
•
High-speed extended capabilities port
(ECP) mode
Floppy disk controller:
•
DP8473 and N82077 compatible
•
16-byte FIFO buffer
•
PS/2
†
diagnostic-register support
•
High-performance digital data separator
(DDS)
•
PC-AT, PS/2, and 3-mode floppy disk
drive-mode support