VDMAD_Get_Version

include vdmad.inc

VxDcall VDMAD_Get_Version
mov MajorVersion, ah
mov MinorVersion, al
mov BufferSize, ecx

Returns the major and minor version numbers of the virtual DMA device as well as the size of the buffer if one exists. Uses EAX, ECX, flags

Clears the carry flag if successful and returns the following version and buffer-size information:

AH	Major version number
AL	Minor version number
ECX	Buffer size in bytes.

A buffer is not available until the Init_Complete message is issued. If the buffer has not been allocated, ECX will contain zero when the service returns.