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Re: Best CGA & Hercules monochrome games

Posted on 2021-08-29, 21:48

Magic Key has a very clear copyright notice. Unless you have proof that any of the software is not under copyright, or you have permission from the copyright holder, then it may not be distributed here. FYI, copyright lasts for a long time, and in fact no computer software is old enough to have its …

Re: Another kind of 'CRT'

Posted on 2021-08-20, 19:50

I think question 3 can be less straightforward than it seems 1) Days don't have to be measured in integers. 2) Plants don't grow instantly. 3) The coverage of the lake can't be more than 100%. Given the above points, if you consider that the lake might be covered more than 50% on the 47th day, then …

Re: Screen Tearing in "Cybercon III"

Posted on 2021-08-15, 10:32

That seems a rather low amount of cycles for a game released in 1992... In any case, the game code that updates the screen is doing more than a block move from memory to the screen buffer, and tearing can still happen if cycles are low. What is needed for your purpose, I think, is to slow the game …

Re: Screen Tearing in "Cybercon III"

Posted on 2021-08-14, 17:40

Cybercon III updates the screen without regard for vertical retrace, hence the tearing. The game's main loop drives the frequency of screen updates, so system speed (cycles in DOSBox) can influence the appearance of the tearing. You can see the effect of system speed even in the title screen with …

Re: High precision timing->

Posted on 2021-08-09, 16:02

If you need to be able to execute BASIC statements *during* the overall delay interval as implied in your example, keep in mind that the BIOS function will only return after the specified amount of time, so you will probably have to call it multiple times in a loop.

Re: DOS games with little motion (Passive matrix friendly)

Posted on 2021-08-04, 20:35

in DOS
Some action platformer games for EGA don't scroll, such as Night Hunter, and instead redraw the scene when moving to another area -- but the movement of sprites is unavoidable, of course. If you like puzzle games there are quite a few non-scrolling ones with only a little action like Chip's …

Re: Palette error using Baseball Pro 94

Posted on 2021-07-31, 11:01

The modification stamp of files is set by the host OS when a file is created or written to, so executables usually have their stamps set only at installation, but in some rare cases an executable is written to after installation. Some games concern themselves with the date/time stamp of files for …

Re: Palette error using Baseball Pro 94

Posted on 2021-07-31, 08:09

The problem is related to copy protection: UPSTATS.EXE inspects SHELL.EXE and aborts with the misleading palette error message if modification is detected. Perhaps the error message was made to appear innocuous so people who cracked the game might call tech support to report themselves. ;) SHELL.EXE …

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