Int 7F  - Sbs Winrun 1.00 - Transmitter Entry Point                        [U]

   DS:SI -> WinRun control block (WCB) (see #3541)

Return: WinRun receiver status returned in WCB
Program: WinRun is a DOS/Windows utility written by Sven B. Schreiber to start
     Windows applications from a virtual DOS machine under Windows

Note:  The WinRun transmitter (WINRUN-T.COM) and receiver (WINRUN-R.EXE) need
     to be up and running

Format of the WinRun control block (WCB):
Offset Size    Description (Table 3541)
 00h   DWORD   pointer to ASCIZ command string
 04h   WORD    (ret) WinRun receiver status
       0000h-001Fh WinExec() error
       0020h-FFFEh WinExec() instance handle
       FFFFh       Windows not running or WinRun receiver not
                 installed