Format of Virtual Device Reference Data |
| Offset | Size | Description |
|---|---|---|
|
00h |
DWORD |
physical address of ??? or 00000000h |
|
04h |
DWORD |
physical address of ??? table |
|
08h |
DWORD |
"DEST_PAGE" address to which pages must be mapped |
|
0Ch |
N DWORDs |
"SRC_PAGE" physical addresses of the pages 00000000h = end of table |
|
Note: |
EMM386.EXE sets the first pointer to the start of the device driver chain, the second pointer to a field of 40h bytes followed by a 16-bit offset to the end of the SRC_PAGE table, and DEST_PAGE to the start segment of the UMB area. |
|
See Also: |