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Values for VNETBIOS action code

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Value Description

00h

"VN_Unknown" unknown command

04h

"VN_No_Map" no memory mapping necessary

08h

"VN_Map_In" input buffer is quickly used, so no global mapping needed

0Ch

"VN_Map_In" output buffer is quickly used, so no global mapping needed

10h

"VN_Map_In_Out" buffer is quickly used, so no global mapping needed

14h

"VN_Chain_Send" the chain-send command

18h

"VN_Cancel" special case for cancel command

1Ch

"VN_Buffer_In" buffer is incoming

20h

"VN_Buffer_Out" buffer is outgoing

24h

"VN_Buffer_In_Out" buffer used for both incoming and outgoing data