Hmm the spec PDF says the 430CDT it has 2Mb vram on a C&T HIQV32 (CT65550): Phils: http://www.minuszerodegrees.net/manuals/Toshi … cifications.pdf
so why does Univbe say a 82c455 and only 512k ? Maybe that is the issue ? Or maybe I do not know 🤣
What exact amount of Vram and what exact C&T chipset is in your laptop ?

Vorob, I tested on two laptops with the same chip - Toshiba 510CD & Fujitsu LifeBook 635T, have same crash when launching Z, so probably yes - the chip is not compatible.

Horun wrote on 2022-01-15, 03:28:

so why does Univbe say a 82c455 and only 512k ?

Mine say same 512K, that's wrong, actually 2Mb. Could be Univbe issue?

I refuse to believe that ancient game doesn’t work on ancient pc! Need to find solution 😀

No, nothing helps. I don’t get it… What’s so special about this title? What other titles use same technology and won’t work on my laptop?

I looked and the game Z includes UniVBE 5.2 but only 5.3a and up support C&T 65550.
Are you using the games version of VBE ? Maybe you could try v5.3a ?? It should be compatible with the VBElib in the game, not sure if versions 6+ would be...
From the 5.3a readme:
The following is a complete list of all the new chips that have been added to the 5.3a release since the 5.2 release of SciTech Display Doctor.
This is on the list >> Chips & Technologies 65550/54 LCD

Just a thought.....

Maybe this could help (especially if your video card's BIOS already has some level of VESA support) :
"No"UniVBE: Try to find test games or testers that want to helper me with this project

That thread also references this Re: VESA Fix Utility Listing (for old video cards) which may be something else to try.

Well... I've tried some things, but none of them work. I don't get it.

I've installed SciTech Display Doctor 6.53 which detects my video card without an issue

No luck. I've tried transferring *.drv file, nothing changed.

I also downloaded SciTech UniVBE 6.53 but this thing doesn't work:

But! If I disable UniVBE detect in-game it will use "Driver file is configured for standard VGA" and the game also won't work. Maybe I need smth else?

I also tried few other utilities you've provided, like adding additional resolution support. No luck.

Hmm I am guessing you already tried searching the old archives. Here is some info if not.

The archive of SciTech for v5.3a with only one entry to the game Z and one item for C&T 165550:
https://web.archive.org/web/19970606200809/ht … .com/index.html
"Chips & Technologies
Low resolution video modes in the 6555x series do not work properly in this release on the LCD panel. On an external monitor they function correctly. "

What video mode are you setting the game at using Setvideo.exe ?

For v6.53: https://web.archive.org/web/19990418105744/ht … wn_sdd_win.html
The only thing listed is same thing as 5.3a for Z ...