
S875WP1-E TPS
Functional Architecture
Revision 4.0
21
3.4.2 Parallel
Port
The 25-pin D-Sub parallel port connector is located in the rear I/O area. In the BIOS Setup
program, the parallel port can be set to the following modes:
1
Output only (PC AT-compatible mode)
2
Bi-directional (PS/2 compatible)
3 EPP
•
ECP
For information about
Refer to
The location of the parallel port connector
Figure 1
Setting the parallel port’s mode
Table 47
3.4.3
Diskette Drive Controller
The I/O controller supports one diskette drive that is compatible with the 82077 diskette drive
controller and supports both PC-AT and PS/2 modes.
For information about
Refer to
The location of the diskette drive connector
Figure 1
The signal names of the diskette drive connector
Section 5.10
The supported diskette drive capacities and sizes
Table 50
3.4.4
Keyboard and Mouse Interface
PS/2 keyboard and mouse connectors are located on the back panel. The +5 V lines to these
connectors are protected with a PolySwitch* fuse circuit that, like a self-healing fuse,
reestablishes the connection after an overcurrent condition is removed.
NOTE
The keyboard is supported in the bottom PS/2 connector and the mouse is supported in the top
PS/2 connector. Power to the computer should be turned off before a keyboard or mouse is
connected or disconnected.
The keyboard controller contains the American MegaTrends* (AMI) keyboard and mouse
controller code, provides the keyboard and mouse control functions, and supports password
protection for power-on/reset. A power-on/reset password can be specified in the BIOS Setup
program.
For information about
Refer to
The location of the keyboard and mouse connectors
Section 3.4.4
The signal names of the keyboard and mouse connectors
Table 35