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7.2.34. Function 0801 - Free Physical Address Mapping Table of Contents 7.2.36. Function 0901 - Get and Enable Virtual Interrupt State
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Table of Contents
7. PMODE/W MSDOS Extender
7.2. PMODE/W Supported DPMI INT 31h functions
7.2.35. Function 0900 - Get and Disable Virtual Interrupt State


7.2.35. Function 0900 - Get and Disable Virtual Interrupt State
PMODE/W API

This function Disables the virtual interrupt flag and returns the previous state of it. 
In:
   AX     = 0900h
Out:
   always successful:
     carry flag clear
     AL     = 0 if virtual interrupts were previously
                disabled
     AL     = 1 if virtual interrupts were previously
                enabled
Notes:
AH is not changed by this function. Therefore the previous state can be restored by simply executing another INT 31h.

A client that does not need to know the prior interrupt state can execute the CLI instruction rather than calling this function. The instruction may be trapped by a DPMI host and should be assumed to be very slow.

Previous: 7.2.34. Function 0801 - Free Physical Address Mapping To the Table of Contents Next: 7.2.36. Function 0901 - Get and Enable Virtual Interrupt State
7.2.34. Function 0801 - Free Physical Address Mapping Table of Contents 7.2.36. Function 0901 - Get and Enable Virtual Interrupt State
- 7.2.35. -