Well, I've made a bit more headway in troubleshooting the thing. It looks like Concurrent is crashing before it sets up the serial ports. I turned on all serial port debugging, and the only serial port activity is dosemu's initialization and shutdown when I kill the process. No further serial port activity is being logged.
Here's the tail end of the log: DISK: /var/lib/dosemu/cdos-only.img: Trying to read 9 sectors at T/S/H 15/0/1+0 at pos 142848 DISK read @1/15/0 (9) -> 0x98e00 OK. CMOS: read cmos_subst = 0x00 CMOS: read addr 0x0e = 0x00 CMOS: read cmos_subst = 0x20 CMOS: read addr 0x10 = 0x20 INT1A: RTC time 16:39:28 INT1A: RTC date 20020202 (DOS format) disk get parameters 0x80 Return for SIGNAL Return for SIGNAL Return for SIGNAL Return for SIGNAL ...repeated... RTC: cmos update 16:39:29 RTC: alarm check e=0x2 ...more SIGNAL messages... RTC: cmos update 16:39:30 RTC: alarm check e=0x2 ...still more SIGNAL messages... and so forth. I'm afraid I don't understand dosemu's architecture quite enough to know what these incessant signals mean. How would I troubleshoot this? -P - To unsubscribe from this list: send the line "unsubscribe linux-msdos" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html