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TAN002
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1989-08-09
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Technical Advisory Note 002 28 July 1989 revised 9 August 1989
Microsoft and Logitech BUS Mouse
We have been advised the I/O address (Port) range for the Microsoft BUS
Mouse is 220-24F. An example configuration for VMOSCONF of such a mouse
using IRQ 5 would be:
Configure Port Create MOUS 220 24F Mouse
Configure VDD Create MM Mouse
Configure Port Up MOUS
Configure IRQ Up IRQ5
Configure Port Attach MOUS MM
Configure IRQ Attach IRQ5 MM
Configure VDD Mode MM fOreground
Configure VDD Up MM
The Logitech BUS Mouse is similar. Its I/O (Port) range is 23C to 23F. An
example configuration using IRQ3 would be:
Configure Port Create MOUS 23C 23F Mouse
Configure VDD Create LM Mouse
Configure Port Up MOUS
Configure IRQ Up IRQ3
Configure Port Attach MOUS LM
Configure IRQ Attach IRQ3 LM
Configure VDD Mode LM fOreground
Configure VDD Up LM
Note that the IRQ assigned must not be used by any other resource. Some
common IRQ assignments follow. If you have the indicated resource in your
386, then the associated IRQ is UNAVAILABLE. Any IRQs not listed in the chart
below are commonly unavailable.
-------------------------------------
All AT BUS systems (reserved) IRQ2
COM2 serial port IRQ3
-------------------------------------
COM1 serial port IRQ4
LPT2 parallel port IRQ5
-------------------------------------
XT hard disk controller IRQ5
-------------------------------------
IRQ2 is used as the expansion interrupt on AT BUS systems. Some components do
use IRQ2, however. These are commonly LAN adapters. For these, Vmos/3 maps
IRQ2 to IRQ9. If you have to select IRQ2 on an adapter, define it as IRQ9
under Vmos/3. See TAN003 for more information.