Hi! I'm not 100% percent sure, but I think the card/chip has features to assist GDI in drawing,
ie. can do certain things on it own, like drawing lines, circels, filling an object, bitblit etc.
On a 286/386 this can improve performance quite a bit, since it lowers the burden/load on the main processor.
In short, it's an early Windows Accelerator type or card/chip. The features should be on by default,
but checking win.ini shouldn't hurt, either. By the end, some WD reference might be there.
Something like FiFo=1 or something (just a wildguess).
Sysedit is a hidden program that opens all these config files.
About the acceleration features..
I just found a line of text, that made me belive it's true, but I have to continue to search for details. Sorry, 😅
"noaccel - for Cirrus and WD chipsets. This option disables the accelerated features for the clgd5426, clgd5428, wd90c24, wd90c31 and wd90c33 chipsets."
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