neese@adaptex.UUCP (10/26/89)
>Has anyone installed two hard disk controllers (one MFM and one >either SCSI or ESDI) in a single IBM AT under DOS? Is this even >possible or do the port addresses conflict? What software drivers >are needed to make it work? The AHA-1540A/1542A SCSI Host adapter (Adaptec) will co-exist with a ST-506/RLL/ESDI controller, without anything special needing to be done. The only caveat is the SCSI device is the slave device. Also, without drivers you can only have one additional hard disk attached to the host adapter, as the INT13H AT BIOS spec doesn't allow for more than 2 hard drives in a system. So if you want to add more than 2 total hard drives in this scenario, you would need the ASW-1110 software package for the AHA host adapter. Roy Neese Adaptec Central Field Applications Engineer UUCP @ {texbell,attctc}!cpe!adaptex!neese merch!adaptex!neese