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VxD = 002Bh
Note: The desired VxD and service number are identified by the data immediately following the INT 20 instruction, as in: INT 20h DW service number DW VxD identifier
See Also: INT 2F/AX=1684h"DEVICE API" - INT 30"Windows" - #01265 - #01340
(Table 01294) Values for VCOMM (VxD ID 002Bh) service number: 0000h "VCOMM_Get_Version" 0001h "_VCOMM_Register_Port_Driver" 0002h "_VCOMM_Acquire_Port" 0003h "_VCOMM_Release_Port" 0004h "_VCOMM_OpenComm" 0005h "_VCOMM_SetCommState" 0006h "_VCOMM_GetCommState" 0007h "_VCOMM_SetupComm" 0008h "_VCOMM_TransmitCommChar" 0009h "_VCOMM_CloseComm" 000Ah "_VCOMM_GetCommQueueStatus" 000Bh "_VCOMM_ClearCommError" 000Ch "_VCOMM_GetModemStatus" 000Dh "_VCOMM_GetCommProperties" 000Eh "_VCOMM_EscapeCommFunction" 000Fh "_VCOMM_PurgeComm" 0010h "_VCOMM_SetCommEventMask" 0011h "_VCOMM_GetCommEventMask" 0012h "_VCOMM_WriteComm" 0013h "_VCOMM_ReadComm" 0014h "_VCOMM_EnableCommNotification" 0015h "_VCOMM_GetLastError" 0016h "_VCOMM_Steal_Port" 0017h "_VCOMM_SetReadCallBack" 0018h "_VCOMM_SetWriteCallBack" 0019h "_VCOMM_GetSetCommTimeouts" 001Ah "_VCOMM_SetWriteRequest" 001Bh "_VCOMM_SetReadRequest" 001Ch "_VCOMM_Dequeue_Request" 001Dh "_VCOMM_Dequeue_Request" 001Eh "_VCOMM_Enumerate_DevNodes" 001Fh "VCOMM_Map_Win32DCB_To_Ring0" 0020h "VCOMM_Map_Ring0DCB_To_Win32" 0021h "_VCOMM_Get_Contention_Handler" 0022h "_VCOMM_Map_Name_To_Resource"
See Also: #01293 - #01295
Category: Windows - Int 20h - M
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