in extremis and pic 8259

[danrevella]

hi!!
The game "in Extremis" ( a 1993 dos game) does not run under PCEM...
I have try many configurations.....
This game, both the french and the english version does work under dosbox.
It is famous coz it disable both Game Wizard (dos) and Softice and other debuggers...
While trying to get it working with game wizard 3.0a, I have seen that this game "literally" play with the pic 8259.....
The pic is continuosly reprogrammed both in the intro and both during the game, the keyboard is accessed only with direct access and not using the interrupts.....
I hope Pcem may be upgraded to be able in running this game...
Thanks!!!
Danrevella

p.s. IMO this game is orrible, but his protection to avoid game wizard, softice and debuggers is really interest.....

[Scali]

Could that be related to this issue? viewtopic.php?f=2&t=531
There was a bug that masked all interrupts whenever an ICW1 command was written to the PIC. If the code does not specifically set a new mask after that, interrupts will remain masked, and the system may get stuck.
You could try my build with the fix for that, and see if it works: https://www.dropbox.com/s/xyqt7ltd9s6r4 ... x.zip?dl=0

[danrevella]

Hi!!
I'm unable in runnig your version...
Impossibile avviare correttamente l'applicazione (0xc000007b). Fare clic su OK per chiudere l'applicazione.
I have try to reinstall VC runtime but with no result.....
Any help please?

Many thanks!!

[Scali]

Did you install the correct VC runtime?
You need the x86 redist for Visual C++ 2015: https://www.microsoft.com/en-us/downloa ... x?id=48145

[danrevella]

Hi!!!
After re-reinstalled VC runtime, now it works.... (before I have installed the 64 version of VC... ;-(()
The game now work 100 %
I hope this 8259 pic bug will be fixed on the official Pcem verion also.

Many thanks!!!

[Scali]

I hope this 8259 pic bug will be fixed on the official Pcem verion also.

Yes, the patch is already in the official PCem source code. So the next release should work.