H132842 - PCI Adapters Fail After Warm Boot in PC 300/700 SYMPTOM: IBM PC 300/700 Series systems may exhibit an intermittent system hang condition or fail to recognize a PCI adapter after a warm boot. PROBLEM ISOLATION AIDS: PCI adapters installed in a PC 300/700 Series systems may not function after a warm boot cycle due to the adapter not resetting. The effect of this will be that the application that uses the adapter will fail. This failure is most commonly associated with PCI communication adapters, but can occur with other types of PCI adapters. The system hang or adapter reset failure does NOT occur if the system is powered off/on. System and adapter diagnostics run without failures. FIX: Install the latest BIOS update for the PC 300/700 systems AND "BUSMASTR.ZIP" file which enables or disables PCI Busmastering for specific PCI slots installed in the system. View the "readme" file on the BUSMASTR diskette for installation instructions. PC 300 Series 6576 and 6586 do not require the BUSMASTR.ZIP file. BUSMASTER.ZIP does not operate on PC 700 Series Micro Channel systems. The Reference Partition must be updated with a current level Reference Diskette to allow the Busmaster setting to appear on the Micro Channel PCI Setup Configuration screen. The PC 700 Micro Channel Reference diskette is available on the IBM PC Company BBS in the "IBM PC 300/700 Files" section. Obtain the latest PC 300/700 Series Flash BIOS updates from the IBM PC Company BBS system by calling 1-919-517-0001. Locate the "IBM PC 300/700 Files" section (section #21) for the Flash BIOS files: BUSMASTR.ZIP - FIX FOR PCI ADAPTERS LEJT63A.DSK - ISA/PCI FLASH UPDATE LEVEL 63A (6571/6573 6581/6583) N1JT80A.DSK - ISA/PCI FLASH UPDATE LEVEL 80A (6575/6585 6875/6885) Flash BIOS updates and Reference Diskettes may also be downloaded via the Internet from the IBM Personal Computer File Library by searching the following Internet URL: http://www.pc.ibm.com/files.html The updates are located in the IBM PC 300 & 700 Series Files section or by using the search facility to locate the files by the names listed above. If the failure persists continue normal problem determination procedures to isolate the failing application or FRU.