I changed that data on location 8CC, and command fc /b MGRAPHIC.BAK MGRAPHIC.EXE gives me the same result. You can try attached file.

Srandista wrote:

I changed that data on location 8CC, and command fc /b MGRAPHIC.BAK MGRAPHIC.EXE gives me the same result. You can try attached file.

Thanks its working, when i used it i got classic runtime error 6003, what is normal too quick machine solvable problem - i solved it by disabling L1 cache with setlmul L1d. Now im on game map and longer gameplay would be needed but i think it would be good.

Pleas check mgraphics.exe from Darklands if it could be saved by same way or not.

Try it, I change same hex value as in the first file, and result from fc command is also the same.

Srandista wrote:

Try it, I change same hex value as in the first file, and result from fc command is also the same.

This one seems to not fixing Darklands blackscreen when is started combat - black screen (problem could be everywhere else in game code), i tried it in Dosbox - first time i got freeze when it worked before - but i had added some CPU cycles, i tried it second time with default 3000 cycles and it was ok.. I will try it on physical machine with some slowdowners.

BTW i discovered that Civilization I, also have EGRAPHIC.EXE and TGRAPHIC.EXE for EGA and Tandy, i cant test Tandy, but Ega freeze is the same.

Yeah, I can't help you any more, if it wouldn't work, because I don't know, how to analyze actual game code. I just used hex editor on same value as in Civilization.

Darklands on physical even with setmul l1e still freeze at start of combat - black screen so problem would be elsewhere.. where it would need some debugger work in Dosbox.

Try pleas one more Railroad tycoon version 1990, i simulated title screen freeze when in Dosbox with max cycles.

In this file, there's not the same sequence of hex values as in previous files, so I don't know, what to change. Sorry.

Srandista wrote:

In this file, there's not the same sequence of hex values as in previous files, so I don't know, what to change. Sorry.

Ok thanks for trying.. to Darklands - one more guess ins such sequence in file multiple times?

More probable is that this fix could fix only problems with game start which as have minimally Civ 1 and Railroad tycoon, Darklands have probably also other problem.

Maybe try to get in a touch with guy, who find the fix for Civ on their forums. When I will know, which hex value on which place I should change, I will do that for you, no problem.

I did some more testing with Darkladns, problem is not mgraphic.exe related, when i boot with SB at IRQ 7 i have no longer combat black screen.. sound is still not working but its of topic..

And with original, unedited for you didn't even get to the game like with Civ, or there is no change between unmodified and modified for?

No Darkland got in game, even without fix, so they probably fixed it... But Railroad tycoon freeze is the same, i didnt tested other games yet.

Ok i simulated same problem with max Dosbox cycle with Lightspeed game - i has same start menu as 2 other problematic games.

Hi,

As discussed in the civ forums, from those games only lightspeed is not working in my at all P3. It requires patching two files.

Comparing files LIGHTSPD.BAK and LIGHTSPD.EXE
0000ABC7: 74 90
0000ABC8: 0A 90
0000ABD1: 74 90
0000ABD2: FA 90

Comparing files MGRAPHIC.BAK and MGRAPHIC.EXE
000008D2: 74 90

I believe I have also fixed colonization - testing it at the moment and working also on master of magic

Im not sure of Master of Magic is afftected by this bug too, because regarding of my compatibility matrix, its running at least on some fast machines:
https://docs.zoho.com/sheet/published.do?rid= … 04bf92a9209e034

Otherwise you have skill to fix such problems, try to look on this thread Runtime error 6003 so far, we dont have any general fixer for it, and quite a lot game are affected - list in thread is much shorter than reality..
Runtime error R6003 integer divide by 0 - real Fixes for fast CPUs, no slowdown workaround..
In pure theory it could be same problem, or very similar.

Hi,

Yes MoM works now, perhaps because i switched to DOS 6.22 from Win98 DOS.
Stargunner works fine for my system - any other game that gives this error?

Look at first post, i dont have all of these games, but i suppose that error would be the same.