trier@cwlim.CWRU.EDU (Stephen C. Trier) (07/11/90)
I need a way to copy-protect programs with internal overlays under Novell Netware. The NetWare execute-only bit fails on these programs because they need to read the .EXE file after startup in order to retrieve their overlay sections. In the course of looking for a valid technique, I came across int 21h, function 4Bh, which is the MS-DOS EXEC call. The call itself was not surprising; I've always known it was there. What was surprising was the undocumented subfunction 01, which I found in Ralf Brown's Interrupt List. Subfunction 01 is labeled "Load but don't execute" and is marked as internal, but lacks any information on its use. My question is whether anyone can tell me more about this function. Is it called by subfunction 00, "Load and execute"? Has anyone made use of function 01h in their programming? -- Stephen Trier Case Western Reserve University Home: sct%seldon@scl.cwru.edu Information Network Services Work: trier@cwlim.ins.cwru.edu I do _not_ speak for the University.