Date:  January 28, 1987 
Number:  173 

Title:  Workstation Shell Interrupt and Memory Conflict with IBM 
        EGA Card 
 
 We have discovered two potential conflicts between workstation 
shells and IBM Enhanced Graphics Adapter (EGA) cards installed in 
workstations.  The conflicts apply to the following software 
releases: 
 
     Advanced NetWare 68 V2.0 
     Advanced NetWare 86 V2.0 
     Advanced NetWare 286 V2.0 
     Advanced NetWare 286A V2.0 
     Advanced NetWare 68 V2.0a 
     Advanced NetWare 86 V2.0a 
     Advanced NetWare 286 V2.0a 
     Advanced NetWare 286A V2.0a 
     Advanced NetWare 68 V2.01 
     SFT NetWare 286 V2.0a 
     SFT NetWare 286A V2.0a 
     Advanced NetWare 286 V1.02 
     Advanced NetWare 286A V1.02 
 
 POTENTIAL INTERRUPT CONFLICT -- The potential for conflict is 
due to the fact that the workstation shell may use IRQ 2 
(depending on the LAN hardware) and the EGA software is also 
configurable to IRQ 2. 
 
 POTENTIAL MEMORY CONFLICT -- The potential for conflict is due 
to the fact that the workstation shell sets up a memory buffer at 
D000:0 for some network types and the EGA card can also allocate 
memory at D000:0. 
 
The potential conflicts apply to the following networks: 
 
 
Network                       IRQ          ROM      RAM buffer at: 
 
STANDARD MICROSYSTEMS         2                     D000 
ARCNET* 
 
ALLEN-BRADLEY VISTALAN/PC     2                     D000 
 
AT&T STARLAN                  2                     C000 
 
INTELLIGENT NIC               None                  D000 
 
GENERIC NET BIOS              2 
 
3 COM ETHERLINK PLUS          2            None 
 
PROTEON PRONET                2          Disabled   None 
 
GATEWAY G/NET                 None                  0D000 
 
ORCHID PCNET                  2 
 
IBM PC NETWORK                2 
 
NESTAR                        2                     D200:0 
                                                  (for 1000h) 
 
IBM PC CLUSTER                3            D000:0 
 
IBM TOKEN-RING                2                     CC00 and D800 
 
NOVELL RX-NET                 2                     D000:0 
 
* ARCNET is a registered trademark of Datapoint.