Int 31H Function 0A00H
Get Vendor-Specific API Entry Point
Returns an address which can be called to use host-specific extensions
to the standard set of DPMI functions. DPMI 1.0 clients should avoid
use of this function (see Note).
AX = 0A00H
DS:(E)SI = selector:offset of ASCIIZ (null-terminated)
string which identifies the DPMI host vendor
if function successful
Carry flag = clear
ES:(E)DI = selector:offset of extended API entry point
and DS, FS, GS, EAX, EBX, ECX, EDX, ESI, and EBP may be
if function unsuccessful
Carry flag = set
AX = error code
|8001H||unsupported function (extension not found)|
- The null-terminated string specifies the host-specific vendor name
or some other unique identifier to obtain a specific extension entry
point. The string comparison used to look up the API entry point is
- Clients must use a FAR CALL to reach the extended API entry
- All extended API parameters are specified by the vendor.
- DPMI 1.0 clients should use Int 2FH Function
168AH in preference to this function. DPMI 1.0 hosts support this
function solely for backward compatibility with DPMI 0.9 clients.