First post, by Brickpad
Not sure if this falls under hardware or software, so please move if necessary.
Mainboard: Magitronic B-345G
CPU: AMD Am386Dx-40
Super I/O: Generic / unknown
Audio: Sound Blaster Pro 2 CT1600
OS: Windows for Workgroups 3.11
I've got two 3COM Etherlink III ISA network cards (3509C-B and 3509B-TPO). I don't have any particular issues with these cards except when trying to configure them with 3COM's drivers. The 3509C-B (RJ45 / AUI / BNC combo ports) hard-locks DOS whenever I try to test the card, or make changes to the IRQ / DMA through the 3COM test/configuration program. I tried to resolve this problem by bypassing MS-DOS start-up files, which didn't help.
Swapped out the 3509C-B card with the 3509C-TPO (RJ-45 only) card, but again it hardlocked when I tried to configure the card after normal boot into MS-DOS. Rebooting and bypassing the MS-DOS start-up files made it possible to configure and test the card without a problem.
Both cards prevent Windows for Workgroups from loading (hangs at the splash screen) after I install the drivers, or use the driver that comes with Windows. I've already looked for possible IRQ and DMA conflicts. There aren't.