Online HelpPC 2.10 Quick Reference Utility Copyright 1991 David Jurgens
INT 67,40 - Get EMM Status (LIM EMS 3.0+)
AH = 40h
on return:
AH = status
00 success
80 internal software error
81 hardware malfunction
83 unallocated or invalid handle
84 undefined function requested
85 no handles available
86 error in save or restore of mapping context
87 more pages requested than physically exist
88 more pages requested than currently available
89 zero pages requested
8A invalid logical page number
8B illegal physical page number
8C context stack out of memory
8D context save failed, handle already has context stack
8E context restore failed, no context stack for handle
8F invalid subfunction
90 undefined attribute type
91 feature not supported
92 success, portion of the source region was overwritten
93 length of source or destination region exceeds length of
region allocated to either source or destination handle
94 conventional and expanded memory regions overlap
95 offset within logical page exceeds size of logical page
96 region length exceeds 1M
97 source and destination regions have same handle and overlap
98 memory source or destination type undefined
9A specified DMA register set not supported ???
specified alternate map register set not supported
9B all DMA register sets currently allocated ???
all alternate map register sets currently allocated
9C alternate DMA sets not supported ???
alternate map register sets not supported
9D undefined or unallocated DMA register set ???
undefined or unallocated alternate map register set
9E dedicated DMA channels not supported
9F specified dedicated DMA channel not supported
A1 duplicate handle name
A2 attempted to wrap around 1Mb conventional address space
A3 contents of partial page map corrupted or count of
mappable segments exceeds total mappable segments
A4 operating system denied access
- registers not listed are preserved
- should only be used after establishing that the EMS driver
is present
[helppc.bosbyte.nl] EMS status