| Title: | FDDI - The Next Generation |
| Moderator: | NETCAD::STEFANI |
| Created: | Thu Apr 27 1989 |
| Last Modified: | Thu Jun 05 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 2259 |
| Total number of notes: | 8590 |
Hello world,
After installing a DEFPA-DA FDDI adapter in a Compaq Proliant 1500 server it
appeared that the devices connected to the embedded SCSI controller couldn't be
used anymore. In the eventlog the DEFPA reported the following error: Could not
allocate the resources neccesary for operation.
According to the readme files on the DEFPA installation disk:
error 0X1A,
Could not allocate map registers needed for proper transmit operation. Verify
that the system has enough memory to run Windows NT. If running Windows NT 3.5,
install service pak 2 (SP2) or greater. Reduce transmitbuffer parameter if
increased from default.
The number of transmit buffers is set to the default value of 32. Decreasing
this number to 16 prevents the DEFPA from logging the error message but the
SCSI devices on the embedded controller still can't be accessed. If the DEFPA
is disabled in the configuration utility then the embedded controller gives no
problems. If the embedded controller is disabled the FDDI links come up and the
FDDI card can be used normally. These results make it unlikely that a hardware
problem causes this behavior. Bus mastering is enabled on all slots and all
interrupts are unique (not shared).
The driver is loaded from the 2.4 disk. Version 2.42 driver gives the same
results. Other details are at the end of this story.
As a workaround the EISA FDDI adapter (DEFEA-DA) is installed in the system.
Installation gave no problems and the FDDI connection functioned properly, also
in combination with the embedded SCSI controller.
Now the questions:
- Has anybody seen this problem?
- Did you eventually get the DEFPA working together with other all other
controllers in the system?
- If yes, what did you do?
- All other suggestions are welcome. If more info is needed, just let me know.
Thanks in advance,
Jaap Prenger
Customer Services Holland
-------------------------------------------------------------------------------
DEFPA configuration details:
----------------------------
Memory address: 163M
Memory amount: 1k other
Port address: 7100h-717fh size: dword
Memory address: 164M
Memory amount: 64k other
Interrupt (IRQ): 5 trigger: level
Embedded SCSI controller configuration details:
-----------------------------------------------
Port address: 7000h-70ffh size: dword
Memory address: 162M
Memory amount: 1k other
Interrupt (IRQ): 14 trigger: level
System Configuration:
---------------------
Compaq Proliant 1500/R running Windows NT 3.51
Compaq ssytem BIOS 2/17/95, rev E12
163840 kb memory
slot 1 (EISA): DEFEA-DA (temporary workaround)
slot 2 (EISA): daughter card of DEFEA-DA
slot 3 (EISA): Compaq ...manager/modem
slot 4 (EISA): Compaq RAID SCSI controller
slot 5 (EISA): Compaq Netflex/Netflex II UTP netwerk card
slot 6 (PCI) : empty
slot 7 (PCI) : DEFPA-DA
slot 8 (PCI) : empty
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 1840.1 | NETCAD::STEFANI | Machines to humanize | Tue Oct 24 1995 07:50 | 46 | |
>>According to the readme files on the DEFPA installation disk:
>>error 0X1A,
>>Could not allocate map registers needed for proper transmit operation. Verify
>>that the system has enough memory to run Windows NT. If running Windows NT 3.5,
>>install service pak 2 (SP2) or greater. Reduce transmitbuffer parameter if
>>increased from default.
At the bottom of your note you mention running NT 3.51. Did you get
the 0x1A error code while running 3.51, or were you running 3.5? The
map register allocation bug with PCI devices should be strictly limited
to 3.5. I haven't received reports of this failure with customers
upgrading to 3.51.
>>DEFPA configuration details:
>>----------------------------
>>Memory address: 163M
>>Memory amount: 1k other
>>Port address: 7100h-717fh size: dword
>>Memory address: 164M
>>Memory amount: 64k other
>>Interrupt (IRQ): 5 trigger: level
>>
>>Embedded SCSI controller configuration details:
>>-----------------------------------------------
>>Port address: 7000h-70ffh size: dword
>>Memory address: 162M
>>Memory amount: 1k other
>>Interrupt (IRQ): 14 trigger: level
If possible (maybe through the ECU on the COMPAQ) try increasing the
memory address assignments for the DEFPA and the SCSI controller. It
seems like the COMPAQ is starting the memory address assignments
immediately following the end of physical RAM. Try increasing the
space between those assignments. For example, try configuring the
DEFPA memory addresses to 180M and 181M, respectively, and the SCSI
memory address to 190M.
From your configuration dump I don't see any resource conflicts, but
then, I don't have an explanation for why these two PCI devices don't
work well together. To simplify your configuration while testing, try
removing all of the EISA cards (DEFEA-DA, modem, RAID SCSI, and
Netflex). Just leave the DEFPA-DA and embedded PCI SCSI controller and
see if you can make that work. If you can, then add one device at a
time until it fails.
- Larry
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