Date:  September 12, 1986 
Number:  150 
 
Title:  Using the Disk Interface Board (SCSI Card) as a keycard. 

 It is not possible to use Novell's Disk Coprocessor Board (DCB) 
as a keycard. 
 
 The Disk Interface Board (DIB) may be used in place of a keycard 
for all 86 and 286 systems.  Be sure to perform the following 
steps. 
 
1. Set the switches in both banks to either the "ON" or the 
"closed" position.  (Some banks are labeled on/off and others are 
labeled closed/open.) This tells the board that no disk drives 
are attached.  In this arrangement the board will still use 
IRQ-2, DMA-1, and I/O Ports 340-343.  The board also has an EPROM 
socket that decodes at D000:0. 
 
2. The interrupt and DMA channel may be changed by setting the 
switches in banks S1.5.  Select a configuration that will NOT 
conflict with any other boards or devices that you currently have 
installed in your machine.  The following is a list of possible 
settings: 
 
     IRQ-2, DMA-1, all switches set to "ON" position 
 
     IRQ-3, DMA-1, Switch 3 "OFF," all others "ON" 
 
     IRQ-5, DMA-1, Switches 2 and 3 "OFF," all others "ON" 
 
     IRQ-2, DMA-3, Switch 1 "OFF," all others "ON" 
 
     IRQ-3, DMA-3, Switches 1 and 3 "OFF," all others "ON" 
 
     IRQ-5, DMA-3, Switches 1, 2 and 3 "OFF," all others "ON" 
 
     IRQ-2, No DMA, Switch 2 "OFF," all others "ON" 
 
     IRQ-3, No DMA, Switches 1 and 2 "OFF," all others "ON" 
 
3. If you have the "Enhanced SCSI Adapter" which has been made 
since June 1985, you may also disable the EPROM decode.  This is 
done by setting switches 6, 7 and 8 in bank S1.5 to the "ON" 
position.