Microsoft KB Archive/39483

= Mac DOS: Installing a LocalTalk Compatible Card in an IBM PC/XT =

Article ID: 39483

Article Last Modified on 10/30/2006

-

APPLIES TO


 * Microsoft Mail for AppleTalk Networks 1.37
 * Microsoft Mail for AppleTalk Networks 2.0
 * Microsoft Mail for Appletalk Networks 3.0

-



This article was previously published under Q39483



SUMMARY
The IBM PC/XT or a PC/XT compatible uses interrupt 5 for the hard disk controller. To avoid conflicts, no devices installed in an XT should use interrupt 5. To reduce the possiblity of conflicts between other applications and software drivers, set the DMA (direct memory access) channel to 1; note also that the software interrupt should be located at address 60.



MORE INFORMATION
The following table shows some of the common devices that might be installed in an XT, the interrupts used by these devices (in brackets []), and the possible interrupt settings for the Farallon LocalTalk card or compatible cards: Net Card Mouse    COM1  COM2    Possible PC LocalTalk Card Settings -         ---

[2]      [2,3,4]  [4]   [3]

No       No       No    No      Interrupt = 2, 3, or 4

No       No       Yes   No      Interrupt = 2 or 3

No       Yes      Yes   No      Interrupt = 3 with mouse interrupt=2 Interrupt = 2 with mouse interrupt=3

No       Yes      Yes   Yes     Interrupt = 2 requires disabling mouse Interrupt = 3 requires disabling COM2

Yes      No       No    No      Interrupt = 3 or 4

Yes      No       Yes   No      Interrupt = 3

Yes      Yes      Yes   No      Interrupt = 3 requires disabling mouse Interrupt = 4 requires disabling COM1

Yes      No       Yes   Yes     Interrupt = 2 requires disabling net card Interrupt = 3 requires disabling COM2 Interrupt = 4 requires disabling COM1 and COM2

Yes      Yes      No     No     Interrupt = 3 with mouse interrupt=4 Interrupt = 4 with mouse interrupt=3 If you still encounter problems installing your Farallon LocalTalk card, call Farallon Technical Support at (415) 596-5000.

Additional query words: 1.37 2.00 3.00

Keywords: KB39483

-

[mailto:TECHNET@MICROSOFT.COM Send feedback to Microsoft]

© Microsoft Corporation. All rights reserved.