neese@adaptx1.UUCP (03/13/91)
>/* ---------- "Adaptec AHA-1542a dual SCSI / FDC C" ---------- */ > >I am experiencing a nusance problem which I do not know how to >trouble shoot. > >Under DOS I can utilize the controller to read either low (DD) or >high (HD) floppy disks. What I can't do is either read a DD, >remove it and replace it with a HD and read the HD (and converse). >I have to reboot DOS in order to change floppy disk densities. > >Is this a controller problem, a floppy disk configuration problem, >or an known characteristic of the usage of the dual controler. This problem has appeared on variants of the AMI BIOS. You can use debug to write a 1 to location 40:8f and this will cure the problem. I would make a batch file and put it into autoexec, so that it is done at each power up. Roy Neese Adaptec Senior SCSI Applications Engineer UUCP @ neese@adaptex