Dell Precision 410 Dell Precision WorkStation 410 Mini Tower Systems User's Gu - Page 61

Likewise, COM2 I/O address 2F8h, which shares IRQ3 with COM4, is

Page 61 highlights

Serial Port 1 and Serial Port 2 configure the system's built-in serial ports. These options can be set to Auto (the default) to automatically configure a port, to a particular designation (COM1 or COM3 for Serial Port 1 and COM2 or COM4 for Serial Port 2), or to Off to disable the port. If you set a serial port to Auto and add an expansion card containing a port configured to the same designation, the system automatically remaps the built-in port to the next available port designation that shares the same IRQ setting: COM1 (input/output [I/O] address 3F8h), which shares IRQ4 with COM3, is remapped to COM3 (I/O address 3E8h). Likewise, COM2 (I/O address 2F8h), which shares IRQ3 with COM4, is remapped to COM4 (I/O address 2E8h). (Note that when two COM ports share an IRQ setting, you can use either port as necessary, but you may not be able to use them both at the same time.) If the second port (COM3 or COM4) is also in use, the built-in port is turned off. For more information about built-in ports, port designations, IRQs, and the remapping of ports, see "I/O Ports and Connectors" in Appendix B. Parallel Port configures the system's built-in parallel port. Parallel Port can be set to 378h, to alternate addresses 278h or 3BCh, or to Off to disable the port. The default is 378h; you should leave it at that setting unless an expansion card needs to use that address. Parallel Mode controls whether the system's built-in parallel port acts as an ATcompatible (unidirectional) or PS/2-compatible (bidirectional) port. Your system also supports Extended Capabilities Port (ECP) mode, which can be used by the Windows 95 operating system. Windows 95 uses ECP protocol automatically if it detects an ECP-capable device. Set Parallel Mode according to the type of peripheral device connected to the parallel port. To determine the correct mode to use, see the documentation that came with the device. IDE Hard Disk enables or disables the system's built-in EIDE hard-disk drive interface. With Auto (the default) selected, the system turns off the built-in EIDE interface as necessary to accommodate a controller card installed in an expansion slot. Using the System Setup Program 3-17

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Using the System Setup Program
3-17
6HULDO±3RUW±´±DQG±6HULDO±3RUW±·±±
Serial Port 1 and Serial Port 2 configure the system’s built-in serial ports. These
options can be set to Auto (the default) to automatically configure a port, to a particu-
lar designation (COM1 or COM3 for Serial Port 1 and COM2 or COM4 for Serial
Port 2), or to Off to disable the port.
If you set a serial port to Auto and add an expansion card containing a port configured
to the same designation, the system automatically remaps the built-in port to the next
available port designation that shares the same IRQ setting:
²
COM1 (input/output [I/O] address 3F8h), which shares IRQ4 with COM3, is
remapped to COM3 (I/O address 3E8h).
²
Likewise, COM2 (I/O address 2F8h), which shares IRQ3 with COM4, is
remapped to COM4 (I/O address 2E8h).
(Note that when two COM ports share an IRQ setting, you can use either port as nec-
essary, but
you may not be able to use them both at the same time
.)
If the second
port (COM3 or COM4) is also in use, the built-in port is turned off.
For more information about built-in ports, port designations, IRQs, and the remapping
of ports, see “I/O Ports and Connectors” in Appendix B.
3DUDOOHO±3RUW±±±±
Parallel Port configures the system’s built-in parallel port. Parallel Port can be set to
378h, to alternate addresses 278h
or 3BCh
,
or to Off to disable the port.
The default is 378h; you should leave it at that setting unless an expansion card needs
to use that address.
3DUDOOHO±0RGH±±
Parallel Mode controls whether the system’s built-in parallel port acts as an AT-
compatible (unidirectional) or PS/2-compatible (bidirectional) port.
Your system also supports Extended Capabilities Port (ECP) mode, which can be used
by the Windows 95 operating system. Windows 95 uses ECP protocol automatically
if it detects an ECP-capable device.
Set Parallel Mode according to the type of peripheral device connected to the parallel
port. To determine the correct mode to use, see the documentation that came with
the device.
,’(±+DUG±’LVN±±
IDE Hard Disk enables or disables the system’s built-in EIDE hard-disk drive interface.
With Auto (the default) selected, the system turns off the built-in EIDE interface as
necessary to accommodate a controller card installed in an expansion slot.