IBM-AUSTRIA - PC-HW-Support    30 Aug 1999

PC SERVER 325/330: Some SERIAL PORT Resource SETTINGs FAIL

     Record number:       H163238
     Device:              D/T8639
     Model:               M
     Hit count:           UHC00000
     Success count:       USC0000
     Publication code:    PC50
     Tip key:
     Date created:        O98/03/11
     Date last altered:   A98/03/11
     Owning B.U.:         USA

Abstract: PC SERVER 325/330: Some SERIAL Port Resource SETTINGs FAIL

SYMPTOM:

Failure of the System Board Serial Port(s) result in various errors from the Network Operating System and/or Application attempting to use the Port(s).

PROBLEM ISOLATION AIDS:

All of the following must be true for this TIP to apply:

•  The System is a PC Server 325 Type 8639 model PT0, PTW, PB0, RB0,  or PC Server 330 Type 8640 model PT0, PB0, PM0.
•  The System is running any of the following Network Operating Systems:
  •  OS/2 Warp Server
  •  OS/2 Warp Server Advanced
  •  OS/2 Warp Server SMP

•  The Network Operating System / Application is correctly configured to use the Serial Ports.
•  The System is NOT configured with a Serial I/O Adapter Card
•  System Diagnostics Passes ???/ Fails ??? when testing the the Serial Ports.
•  The Serial Ports are configured to any of the following resource COMBINATIONS* in the CMOS Setup Utility:

    Port A , Address:2E8h, IRQ:4
    Port B , Address:3E8h, IRQ:3

    Port A , Address:2E8h, IRQ:3
    Port B , Address:3E8h, IRQ:4

    Port A , Address:3E8h, IRQ:4
    Port B , Address:2E8h, IRQ:3

    Port A , Address:3E8h, IRQ:3
    Port B , Address:2E8h, IRQ:4

* 4 combinations listed.

FIX:

1.  Set the Resources of the onboard Serial ports to any of the following COMBINATIONS* in the CMOS Setup Utility:

     Port A , Address:3F8h, IRQ:4
     Port B , Address:2F8h, IRQ:3

     Port A , Address:3F8h, IRQ:3
     Port B , Address:2F8h, IRQ:4

     Port A , Address:2F8h, IRQ:4
     Port B , Address:3F8h, IRQ:3

     Port A , Address:2F8h, IRQ:3
     Port B , Address:3F8h, IRQ:4

2.  Configure the Serial Ports in the Network Operating System / Application for the new resources used.

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