COM port ---continue

sen_li wrote:

- I know physically there is only one COM connector.
- but logically we should have four COM ports (COM1,
- COM2, COM3 and COM4),

Historically, 4 com (serial) ports and two parallel ports were defined by address/IRQ.

- AND we should be able to see
- COM1 and COM2 in the device manager.

Only if both Com1 and Com2 are realized in hardware. No reason to reserve a specific base address/IRQ if the hardware to use it is not installed.

When you install an internal modem, the modem creates the com port. If it is a hardware modem, it creates a true com port. If it is a software modem (WinModem, SoftModem) the it creates a virtual port. Neither of there will show up in Device Manager.

Com Ports on Modems are selectable. Most newer ones can be changed via the software. On the others you will need to change the com port via a jumper on the card. Set the com port on your modem to either 2 or 4. It is probably set currently to 1 or 3 - which are physically the same (as are 2 & 4). Also, did you go into the bios to make sure the com ports are enabled? The address is also selectable in the bios for each com port - so even if your modem is set for com port 2 if it is set to the wrong address it still won't work correctly. Check the documentation for your modem card to see which address it is using and set the com port address accordingly. Check the bios first, making sure it is enabled and then change the address and give it a try with each address before attempting to change the com port of the card.

8100 1.7G P4
768M PC800 - 40ns
40G ATA 100 Hard Drive
24X CDRW
16X DVD
Microsoft Natural Keyboard Pro
Logitech USB Mouse
Nvidia 64M GeForce 3
NEC MultiSync FE 950+ Monitor
Soundblaster Live
Klipsch ProMedia 4.1THX Speakers
Windows XP Pro
CyberPower UPS
HP 970 CSE Printer
Epson C80 Printer
Epson Perfection 1650 Scanner

8100 1.7G P4
768M PC800 - 40ns
40G ATA 100 Hard Drive
24X CDRW
16X DVD
Microsoft Natural Keyboard Pro
Logitech USB Mouse
Nvidia 64M GeForce 3
NEC MultiSync FE 950+ Monitor
Soundblaster Live
Klipsch ProMedia 4.1THX Speakers
Windows XP Pro
CyberPower UPS
HP 970 CSE Printer
Epson C80 Printer
Epson Perfection 1650 Scanner

8100 1.7G P4
768M PC800 - 40ns
40G ATA 100 Hard Drive
24X CDRW
16X DVD
Microsoft Natural Keyboard Pro
Logitech USB Mouse
Nvidia 64M GeForce 3
NEC MultiSync FE 950+ Monitor
Soundblaster Live
Klipsch ProMedia 4.1THX Speakers
Windows XP Pro
CyberPower UPS
HP 970 CSE Printer
Epson C80 Printer
Epson Perfection 1650 Scanner

8100 1.7G P4
768M PC800 - 40ns
40G ATA 100 Hard Drive
24X CDRW
16X DVD
Microsoft Natural Keyboard Pro
Logitech USB Mouse
Nvidia 64M GeForce 3
NEC MultiSync FE 950+ Monitor
Soundblaster Live
Klipsch ProMedia 4.1THX Speakers
Windows XP Pro
CyberPower UPS
HP 970 CSE Printer
Epson C80 Printer
Epson Perfection 1650 Scanner

8100 1.7G P4
768M PC800 - 40ns
40G ATA 100 Hard Drive
24X CDRW
16X DVD
Microsoft Natural Keyboard Pro
Logitech USB Mouse
Nvidia 64M GeForce 3
NEC MultiSync FE 950+ Monitor
Soundblaster Live
Klipsch ProMedia 4.1THX Speakers
Windows XP Pro
CyberPower UPS
HP 970 CSE Printer
Epson C80 Printer
Epson Perfection 1650 Scanner

8100 1.7G P4
768M PC800 - 40ns
40G ATA 100 Hard Drive
24X CDRW
16X DVD
Microsoft Natural Keyboard Pro
Logitech USB Mouse
Nvidia 64M GeForce 3
NEC MultiSync FE 950+ Monitor
Soundblaster Live
Klipsch ProMedia 4.1THX Speakers
Windows XP Pro
CyberPower UPS
HP 970 CSE Printer
Epson C80 Printer
Epson Perfection 1650 Scanner

8100 1.7G P4
768M PC800 - 40ns
40G ATA 100 Hard Drive
24X CDRW
16X DVD
Microsoft Natural Keyboard Pro
Logitech USB Mouse
Nvidia 64M GeForce 3
NEC MultiSync FE 950+ Monitor
Soundblaster Live
Klipsch ProMedia 4.1THX Speakers
Windows XP Pro
CyberPower UPS
HP 970 CSE Printer
Epson C80 Printer
Epson Perfection 1650 Scanner

Wow Greenwood

You got a room at your place without a PC. I would be having some wild UT Lan parties at your place.

Regards Troy

Dell Box:
XPS T1300
512M
SUMA GF4 Ti4200SE 128M (3.3nS)
Promise ATA/133 Tx2
Seagate 40G ATA 100
Realtek 10/100
Hitachi 4x DVD
LG 8x4x32
TBS Montego II
Logitech USB j/s
USR V90 Winmodem
Lexmark Z12
W2K SP3

Mongrel Box:
Gigabyte GA-6BXE
P III 500 (ex Dell Box @620)
256M (124 FSB)
Voodoo3 3000 (ex Dell Box)
Maxtor 13.6G (ex Dell Box)
Intel 10/100
AOpen 52x CDROM
C-Media Sound
Canon BJC 70
W2K SP3