Bus-Mastering SCSI Controller Problem with Etherlink 16/16TPLast reviewed: November 30, 1994Article ID: Q122959 |
The information in this article applies to:
SYMPTOMSWhen you are using a 3Com EtherLink 16 (3C507) or EtherLink l6 TP (3C507TP) network adapter, one or more of the following problems may occur:
CAUSEThe 3Com EtherLink 16 (3C507) and EtherLink l6 TP (3C507TP) adapters are incompatible with bus-mastering SCSI hard disk controllers in Intel EISA- based personal computers.
RESOLUTION3Com has created a hardware upgrade to correct this problem. The upgrade requires replacing the programmable array logic (PAL) chip on the 3C507 adapter. This upgrade lengthens the amount of time the network adapter waits for a signal from the bus. Contact 3Com for information about obtaining this upgrade.
MORE INFORMATIONWhen a bus-mastering device takes over the PC bus, it may hold the bus for an indefinite period of time, causing the 3C507 to experience a time-out. The 3C507 adapter relies heavily on the PC bus for timing information. The 3C507 network interface card is manufactured by 3Com, a vendor independent of Microsoft; we make no warranty, implied or otherwise, regarding this product's performance or reliability.
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KBCategory: kbnetwork kb3rdparty kbhw
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