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include vmm.inc InstDataStruc struc InstLinkF dd ? ; reserved; set to 0 InstLinkB dd ? ; reserved; set to 0 InstLinAddr dd ? ; linear address of start of block InstSize dd ? ; size of block in bytes InstType dd ? ; type of the block InstDataStruc ends |
The InstDataStruc structure contains information about an instance data block.
InstLinkF
Reserved. This field is filled by the instance data manager, and must not be used.
InstLinkB
Reserved. This field is filled by the instance data manager, and must not be used.
InstLinAddr
Specifies the linear address of the start of the block of instance data. Thus, the correct value for 40:2F would be 42F.
InstSize
Specifies the size in bytes of the instance data block.
InstType
Specifies the instance data type. It can be one of the following values:
| Value | Meaning |
| ALWAYS_Field | Indicates that the field must always be switched when a virtual machine is switched. All instance data specified by devices should be of this type. |
| InDOS_Field | Reserved for special types of MS-DOS internal data which only need to be switched with the virtual machine if the virtual machine is currently InDOS. |