This is a follow-up for those interested. We have an OEM 3Com/USRobotics USR3030 56k FAX Internal Modem (an 8bit ISA PnP card with jumpers) in a ASUS P2B-F mainboard in a dual-boot Win95/Linux configuration. We also have a 16bit ISA PnP SoundBlaster (Vibra16) sound card (no IRQ/IO jumpers).
On the Linux side we ran pnpdump to get SB16 and USR options, selected "Priority Preferred" options for /etc/isapnp.conf, and attempted to initialize with isapnp (via /etc/init.d/isapnp). The isapnp utility complained of IRQ, then IO conflicts as I tried the usual com1,2,3,4 settings: # setserial -g /dev/ttyS[0-3] /dev/ttyS0, UART: 16550A, Port: 0x03f8, IRQ: 4 /dev/ttyS1, UART: 16550A, Port: 0x02f8, IRQ: 3 /dev/ttyS2, UART: unknown, Port: 0x03e8, IRQ: 4 /dev/ttyS3, UART: unknown, Port: 0x02e8, IRQ: 3 The isapnp utility was happy with an unusual setting IRQ9,0x03e8 but of course Win95 was not at all happy - unable to find; in fact the OEM drivers "autocheck" utility would run indefinitely looking for the card and the Win95 driver wouldn't consider anything other than com1 and com2. In the end I used (labeled) jumpers on the USR3030 to configure it as com2 (/dev/ttyS1) and left the mainboard com2 port enabled in (Award) BIOS settings (necessary!). Both Win95 and Linux can find the USR3030 and the SB16/Vibra16 (prefers IRQ5), however we loose an external serial port. later, -vincent.([EMAIL PROTECTED])
