TITLE: 941209 System hangs with Adaptec 2740/2742 controller with
              cdrom attached.
 
DESCRIPTION OF SYMPTOMS:
    Attempting to access a CDROM attached to an Adaptec 2740/2742
    scsi controller causes trap or system hang.
 
 
SUMMARY OF RESOLUTION:
    Disable tagged queing for the AIC7770.ADD driver.
 
DETAILS OF RESOLUTION:
    1. Edit the OS2 config.sys file.
 
    2. Change the line
 
       BASEDEV=AIC7770.ADD
 
                  to
 
       BASEDEV=AIC7770.ADD /A:0 /TAG:1
 
    3. Shut down system and then reboot for change to take effect.