Drivers/Diags/Option v3.0 (extract to 720k floppy disk!)
Token-Ring Network 16/4 Busmaster
Unfortunately, the 32 bit portion is still pretty bare.
Still a 16MB card?
16/4 Busmaster Reminicience
Hi Louis !
>Peter, can you shed some light on this? I know the TRB was dropped. Can't find an eca on it other than the messed up fairness setting in the downlevel options disk.
Uh ... we are talking about the TR 16/4 Busmaster Adapter
/A (ID: 8FC8) here, right ? Well - that thing was developed originally
for the RS/6000 and sold as "Hi Performance TR Adapter" there ... and was
very, very shortlived (in terms of IBM) in the PS/2 world, because it was
>Why won't the bus master run when more than 16 mb of memory is installed in a server? Under Netware 3.12, the adapter NLM won't load because it says that it can't reserve memory space below the 16 meg boundary. Were these adapters limited through DMA to run only in the older machines?
The ADF lists NODMA ... and I do know absolutely nothing
about No- Well .... the card has been designed to work under OS/2 - and
did as far as I can tell. We had a few in 95s in the early 90, but they
had no real advantage against the older Tropics 16/4 ... so they got the
moving-papers after the Lanstreamer MC32 entered the stage. The 16/4 BM
has been announced for a few machines only IIRC. Have no idea why it should
choke with above 16MB - which is a 24-bit DMA boundary. The Mod. 80 cannot
- for sure - it is known for problems with memory over 16MB. The modern(er)
9595 should be capable to handle it.
LT40009 Error message LT40009 on the IBM 16/4 Token-Ring Network Busmaster Server Adapter/A. This may be caused by the busmaster receiving a frame with a routing field larger than 18 bytes. This occurs when the frame being received has traveled accross 8 or more bridges. Setting the hop count to 7 on all bridges will prevent this problem.
You should also update the IBMTRBM.OS2 device driver to the latest version, as least 3.00.18, to prevent this problem. It can be found in the device driver package located at the adapter's support page http://www.networking.ibm.com/support/trbusmstr
NetWare requesters/servers drop sessions across
Fix This problem can be resolved
by performing any of the following corrective actions:
Calculate MAXTRANSMITS and MINRCVBUFFS parameter
A H(i) value should be computed for each IBM Token-Ring Network 16/4 Busmaster Adapter, and the sum of all H(i) values must be less than 1 MB. (i) means individual.
Adapter Data Rate: Operates at two different data rates: 4 Mbps or 16 Mbps. The adapter data rate MUST be set to the rate of the Token-Ring Network LAN segment to which you are connecting the adapter.
Interrupt Level Operates on one of eight interrupt levels: 2, 3, 4, 5, 7, 10, 11, or 12. The preferred interrupt level is 2, but the adapter can operate on any of the eight levels if necessary.
I/O Address An adapter can operate at any of eight I/O address ranges (86A0 - 86AF to F6A0 - F6AF). If more than one adapter in your computer is used, each adapter must be assigned a separate I/O address range.
Arbitration Levels Select one of fourteen arbitration levels: 0, 1, 2, 3, 5, 6, 7, 8, 9, A, B, C, D, or E. If more than one adapter is used in your computer, each adapter must be assigned a separate arbitration level.
Fairness: Operates with or without arbitration fairness.
Bus Release: During a Micro Channel DMA operation there are two different ways of releasing the bus after the Preempt signal. After a Preempt occurs the bus can be released either immediately or by the maximum time allotted by the Micro Channel architecture. The best performance is achieved if this adapter is allowed to continue for the maximum time allowed.
Early Token Release This function is only applicable at the adapter data rate of 16 Mbps. The best performance of the network at 16 Mbps is achieved when Early Token Release in enabled.