From kragen@dnaco.net Thu Jul 23 23:43:20 1998 -0400 Date: Thu, 23 Jul 1998 23:43:19 -0400 (EDT) From: Kragen To: "fractdev@lists.xmission.com" Subject: Re: (fractdev) Fractint in dosemu In-Reply-To: <199807232130_MC2-5408-1305@compuserve.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Keywords: X-UID: 729 Status: O X-Status: On Thu, 23 Jul 1998, Jonathan Osuch wrote: > Kragen, > >> - When I select 800x600x256 from the DEL screen, it works properly, and > dosemu says: vesa_set_SVGA_mode(): mode=0x5e. But if I TAB to the info > screen, then hit TAB again to get back to the picture, it doesn't print > that message, and it also doesn't redisplay the picture. << > > Have you tried using the textsafe=save option? You know, I should have tried that right away, but I didn't think it would help any -- I guess I misunderstood the problem it was supposed to solve. (I haven't read the textsafe documentation since probably 1994. :). It works! Thanks! > >> - Sometimes, in VESA mode, solid-guessing doesn't fill in the solids on > some lines. I'll see a fractal with big black cracks across it, with dots > scattered in the cracks. The cracks go away on later iterations; I mention > this because it might be of help with other problems. << > > What happens with passes=1? Could this be a periodicity problem? Try > using the command periodicity=0. I'd think that, if it were a periodicity problem, the cracks would not go away on later passes. Indeed, fractint textsafe=save periodicity=0 continues to display the cracks. > >> I think this happens every time you try to browse images (with "L"). I > seem to remember that this used to crash the computer in real MS-DOS as > well. Running fractint, hitting F3, and typing "L" makes it crash, too (in > dosemu, that is). << > > This may be fixed in the 19.6 developer's version. I'll probably grab 19.6 one of these days soon. > Would you please run > Fractint with the debug=10000 command line option, and tell me what it > reports? CPU type: 386 FPU type: 387 IIT FPU: 0 Video: 5 Video chip: 14 (vesa) 1954 NEAR bytes free 120928 FAR bytes free 8612 STACK bytes free 12680 used by HISTORY structure 21600 video table used > Also, it would be helpful to know how much memory is free on > your system (below 640K, expanded, extended). Also, any other pertinent > information which may be useful. For example, a non-Intel CPU. Some other pertinent information you might be interested in is at the top of the message you were replying to. My dosemu settings for amount of RAM available in unconventional ways follow: # Memory. dpmi 8192 # 1/4 of all RAM # I don't think I'll actually use these: xms 1024 ems 1024 The "1/4 of all RAM" comment refers to the fact that I actually have 32 megs in my machine, physically. Thanks very much for your interest! (Particularly since most of these problems are probably in dosemu or OpenDOS, not Fractint.) Kragen