Date: Mon, 3 May 1993 22:15 EST From: "Wonkoo Kim, EE, U. of Pittsburgh" Subject: Re: BCC2GRX patch 3 (?) To: phc27 AT rz DOT uni-kiel DOT dbp DOT DE, djgpp AT sun DOT soe DOT clarkson DOT EDU Dear Hartmut, (cf. Csaba Biegl) (Okay, I see the reasoning about the patches.) As per your questions about my 256-color problem with BCC2GRX/LIBGRX, >I've some questions concerning your 256 color problem : > > - are there problems with the original dj driver (.grd) (The old style > drivers always use 256 colors) ? Yes, the same problem. > - 320x200x256 mode ok ? No. Any 256-color mode by ativga.grn and ati.grd have the problem. And, 320x200x256 mode by stdvga.grn also have the same problem. So, I guess the problem is not in ati driver. Two possiblities, my video card is not standard, or graphics drivers + libgrx malfunctioned. > - did you check the bios mode numbers from ativga.asm against your > documentation ? Yes, it seemed to be okay. The ROM BIOS version of my ATI VGA Wonder card is VGA1024 V5M-1.00. I have had no problem with 256 color mode on other applications(Non-LIBGRX). Indeed, I am using an image file viewer(written by myself with BCC/TCC + SVGA256 bgi driver(from an archive)) in 256 color mode, and have no problem. I don't know where the problem with LIBGRX/BCC2GRX is. > - The paging mechanism differs between different ati cards. > If you use a VGA Wonder XL you may use to change the driver's paging > routine. (Best way would be to detect the actual ATI card and to enable > the correct paging code) I am not familiar with this. I have an info doc for programming ATI VGA Wonder, but I don't have enough time to digest it. > - Did you contact Csaba ? (LIBGRX 1.03 will come soon, so try to fix > the problem before it's out ... ) No. Probably I should do, but I mistakenly deleted all my emails. Could you forward some of my previous messages to him if you still have? I don't know his email address, so I post this to the list-server. Thanks. Wonkoo Kim EE, U. of Pittsburgh wkim AT vms DOT cis DOT pitt DOT edu