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).

Call With

AX = 0A00H
DS:(E)SI = selector:offset of ASCIIZ (null-terminated) string which identifies the DPMI host vendor

Returns

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 modified.

if function unsuccessful
Carry flag = set
AX = error code

8001H unsupported function (extension not found)

Notes

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 case-sensitive.
Clients must use a FAR CALL to reach the extended API entry point.
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.