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PCAT / IEEE bus specifications (except P60/D)



PROBLEM - Valuepoint 6382/S, 6384/D (except P60/D) and 6387/T were designed to the PCAT bus specification. Depending on the total system configuration, option cards designed to the IEEE bus specification may not function in these systems due to different I/O channel ready timing requirements. Symptoms include "adapter not found" and "adapter failed to initialize" messages or system hangs.

Systems AFFECTED - All 6382/S, 6384/D (except P60/D), 6387/T machines.

SOLUTION - To support options that require the IEEE I/O channel ready timing, IBM has made the following cards available:



6382/S FRU P/N 82g3507

6384/D FRU P/N 82g3509

6387/T FRU P/N 82g3511



These riser cards have a connector that can be jumpered for 60 ns IEEE or 20 ns PCAT I/O channel ready timing. The default setting is 60 ns, the bottom two pairs. The new risers will be released to Mechanicsburg parts distribution when sufficient quantities are available. the following list includes adapters that may require the above riser. IBM adapters that are not on this list meet the pcat bus timings and do not require this riser. Adapters that may require this riser will be added to the list as information becomes available.



product option no. FRU no. assembly no.


IBM 16-bit AT fast 32G4088 92F0330 33G9865

SCSI adapter kit


IBM PS/VP ISA 10base-t 32G4134 92F0386 52G7778

Ethernet adapter


IBM PS/VP ISA 10base2 32G4136 92F0387 52G7779

Ethernet adapter


*IBM LAN adapter for 60G0605 60G0621 60G3447

Ethernet TP


*IBM LAN adapter for 60G0615 60G0621 60G3449

Ethernet CX


*IBM LAN adapter for 48G7169 48G7170 60G3308

Ethernet


Adaptech 1542C or CF N/A N/A N/A

Airsoft Ethernet N/A N/A N/A

Intel® Ether Express N/A N/A N/A

Madge Token Ring N/A N/A N/A

Ungerman Bass 10base-t N/A N/A N/A

Ethernet


Madge N/A N/A N/A



NOTE: The new riser card is required for I/O mode operation only. It is not required for shared memory mode operation. Information on these modes is available in the user guide shipped with the option. If the correct riser card is installed and the jumper is installed correctly, continue failure analysis using normal problem determination.


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