Hi August,

 AA> I was thinking of adding an Agfa SnapScan 1236s (SCSI) 
 AA> scanner to a long-time old 486dx2-50 (32meg), Warp 3 
 AA> redspine (no fixpaks) system.  The PC already features 
 AA> a Soundblaster 16 SCSI-2 card which features an Adaptec 
 AA> AHA-15xxSomething, which  controls the SCSI cdrom unit.

 AA> The scanner comes along with a SCSI card.  It 
 AA> apparently is an Adaptec AVA-1505.

 AA> Does anyone know if this combination of dual host 
 AA> adapters may not be compatible?

I can't specifically answer for the AVA-1505 HA, I have never seen one,
however I have run an Adaptec 1540 and an Adaptec 1520 together in the same
machine without problems. These boards use different chipsets and have
different drivers so may not present the exact same scenario you mention,
however I know that in the case of the 1520 and 1540 drivers, a single driver
allows you to run multiple HA's (if they use the same SCSI chipset). See the
online help for the 152x driver and you will find a /A:n parameter to
indicates which BOARD to address, so provided you can avoid any adddressing
issues, then I dont see why you should have any trouble running multiple
Adaptec controllers in the one machine. 

From memory the limit on cards per driver is 4 and it defaults to only looking 
for /A:0, you MUST specify the others if they exist, but you may need to check 
on that.

I hope this helps.........pk.


--- Maximus/2 3.01