Int 2F/AX=FB42h/BX=0002h

Borland C++ 2.0 DPMILOAD.EXE - ALLOCATE MEMORY

AX = FB42h BX = 0002h CX = size in bytes DX = bit flags

bit 2:
Set to allocate DOS memory, clear for DPMI memory. SI = selector of descriptor to be modified to access allocated memory. DI = selector of a second descriptor to be modified

Return:
AX = ??? or 0000h on error CX:DX = linear base address of DPMI memory block SI:DI = handle for DPMI memory block or FFFFh:FFFFh ???

Note: Two segment descriptors may be set if a code and an aliased data segment are required; if only one descriptor is needed, SI should equal DI on entry

BUG: When allocating DOS memory, the code computes the linear address by multiplying the segment number by 4 rather than shifting by 4

Category: DOS Extenders - Int 2Fh - B

Interrups Categories Contents