Format of DOS 4.00 (pre UR 25066) disk buffer info |
| Offset | Size | Description | ||||||
|---|---|---|---|---|---|---|---|---|
|
00h |
DWORD |
pointer to array of disk buffer hash chain heads (see #01654) | ||||||
|
04h |
WORD |
number of disk buffer hash chains (referred to as NDBCH below) | ||||||
|
06h |
DWORD |
pointer to lookahead buffer, zero if not present | ||||||
|
0Ah |
WORD |
number of lookahead sectors, else zero (the y in BUFFERS=x,y) | ||||||
|
0Ch |
BYTE |
|
||||||
|
0Dh |
WORD |
EMS handle for buffers, zero if not in EMS | ||||||
|
0Fh |
WORD |
EMS physical page number used for buffers (usually 255) | ||||||
|
11h |
WORD |
??? seems always to be 0001h | ||||||
|
13h |
WORD |
segment of EMS physical page frame | ||||||
|
15h |
WORD |
??? seems always to be zero | ||||||
|
17h |
4 WORDs |
EMS partial page mapping information??? |
|
See Also: |