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Repairing NTVDM (Emulation)

posted by Japheth(R) Homepage, Germany (South), 08.08.2013, 06:55

> The graphics issue maybe caused by VIDEOPRT.SYS that needs to be patched
> (sometimes it happen that some update will replace back original version)
> I mention it here
>, there's link to

Does this patch still work for SP3?

Because my current VIDEOPRT.SYS has 120 exports, nor just 115:

start of file lnk.c:

#pragma comment(linker,"/export:...=vidprt0.VideoPortInterlockedDecrement,@1")
#pragma comment(linker,"/export:...=vidprt0.VideoPortInterlockedExchange,@2")
#pragma comment(linker,"/export:...=vidprt0.VideoPortInterlockedIncrement,@3")
#pragma comment(linker,"/export:...=vidprt0.VideoPortAcquireDeviceLock,@4")
#pragma comment(linker,"/export:...=vidprt0.VideoPortAcquireSpinLock,@5")

exports of current VIDEOPRT.SYS:

101A8     1       12AE VideoPortInterlockedDecrement
101AC     2       1296 VideoPortInterlockedExchange
101B0     3       12A0 VideoPortInterlockedIncrement
101B4     4       18E6 PortNotification
101B8     5       901E VideoPortAcquireDeviceLock

As you can see, there has been a new export inserted at #4.

MS-DOS forever!


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