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Subject: question about implementation,usage of _dosmemput*
From: Jim Michaels <jmichae3 AT yahoo DOT com>
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http://www.delorie.com/djgpp/doc/libc/
I was looking at the documentation for _dosmemputw(), and I understood that I wanted to put a uint16_t to a 640k dos buffer __tb, however, I just realized I have no way to get the data from the variable to the dos memory. no way to specify the variable address.

_go32_dpmi_allocate_dos_memory() I looked at this example, and none of these examples say what it is exactly they are doing, and it's not clear/obvious.

an example that includes an actual variable that'w wider than 1 byte to put into memory would be very very helpful. please put it in the documentation so others and I know how to use this. thanks. as it is, my coding is blocked because I don't know what to do.

if buffer is the target as it's described, where do I put the source? no argument for this I can find.

help.
thanks.

//for use with USB
    const uint8_t
        diskInterrupt=0x13,
        SendPacketCommand=0x50,
        zeroByte=0,
        fullPacketSize=255,
        sizeByte=fullPacketSize,
        fullPacketDataLength=sizeByte-packetOverhead,
        lastPartialPacketDataLength=bufferLength%fullPacketDataLength,
        lastPartialPacketSize=lastPartialPacketDataLength+packetOverhead;
    const uint16_t key=0xb055;
uint8_t* _data; //this is an argument from a function
_go32_dpmi_seginfo info;
info.size=(fullPacketSize+15)/16;
_go32_dpmi_allocate_dos_memory(&info);
//ok. target is __tb+0, source is offset(???) which is info.rm_segment*16

//key=0b055hh. this won't change from packet to packet
_dosmemputw(__tb+0,1,info.rm_segment*16);

where do I put the address for key?
I just don't know how to cobble together these 2 parts of the API from the examples and the declarations.
could some explanatory comments at least be put in the examples?