Re: FastDoom. A new Doom port for DOS, optimized to be as fast as possible for 386/486 personal computers!

Posted on 2022-12-08, 08:34

by

by noshutdown

in Release Announcements

in Release Announcements

hello. i am interested in this port, and i have a few questions: 1. is it fully demo compatible with vanilla doom? 2. will there be a 160*100*256c mode? that is, 256 color version of FDOOMC16 and FDOOMC16. 3. is there any plan of porting to djgpp? because djgpp is usually supposed to generate faster …

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Re: Modern graphics on a 486

Posted on 2022-12-02, 13:02

by

by noshutdown

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

to make it short, has anyone ever got both d3d and opengl games running on amd486dx5+gf2mx so far? whatever mainboard it is. i had success on riva128 but havn't tried gf2mx yet. i had also tried rendition1000 before but i think windows just froze at loading desktop, only windows bundled driver(which …

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Re: Advise a good VGA card for 8-bit ISA slots?

Posted on 2022-11-18, 04:56

by

by noshutdown

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

indeed, 8bit isa vga cards are not that common to find. and i wonder if there are any vga chips with only native 8bit bus interface, rather than a chip with 16bit bus support placed on 8bit pcb?

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Re: need info: brooktree ramdacs

Posted on 2022-10-08, 03:29

by

by noshutdown

in Marvin \ Video

in Marvin \ Video

I remember reading even in the mid 90's that the 9000i had a high colour integrated RAMDAC, but my friend and I never found any video modes in which to use it. i read the datasheets some time before, and 9000c can be paired with tkd8001 external ramdac to support 640*400*16bit colors, 9000i only …

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Re: need info: brooktree ramdacs

Posted on 2022-10-07, 10:33

by

by noshutdown

in Marvin \ Video

in Marvin \ Video

Anonymous Coward wrote on 2022-10-07, 09:32: Wait...the 9000i can do hi-colour at 640x400? I'd love to see that in action. i got it wrong, its some 9000c cards paired with external tkd8001 ramdac that can do high color at 640*400, the 9000i seems to have only 256 colors integrated ramdac.

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Re: idea: detailed info and comparision of 486 pci chipsets

Posted on 2022-10-07, 10:28

by

by noshutdown

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

OPTi 802 and 895 are not PCI chipsets. On those boards, a bridge chip is used. I have suspicions, though no concrete proof that the NEC chip you identified is really a rebadged ALD 93C488 (this one also seems dodgy). Although I haven't gotten my hands on any, I am pretty sure in the past I have …

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idea: detailed info and comparision of 486 pci chipsets

Posted on 2022-10-07, 08:41

by

by noshutdown

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

i had this idea of collecting info of 486 pci chipsets for years, but never made much progress. so i think i should start a thread and ask everyone to give some help. first there is the most popular sis496 and umc8881, they are both quite fast and mature, although i feel that the sis496 is slightly …

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Re: need info: brooktree ramdacs

Posted on 2022-08-11, 01:22

by

by noshutdown

in Marvin \ Video

in Marvin \ Video

Forgive me if I am being intrusive, but are you specifically looking for a TVGA8900 variant that has Highcolor/Truecolor support or is your search more along the lines of an "ISA card with Highcolor/Truecolor support" and the the specific card you mentioned seems like it might be appropriate and be …

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Re: need info: brooktree ramdacs

Posted on 2022-08-10, 03:35

by

by noshutdown

in Marvin \ Video

in Marvin \ Video

BT481 and BT482 spring to mind . See https://datasheetspdf.com/pdf-file/1145420/Brooktree/BT482/1 i am disappointed because, from the blurry picture i can barely tell that the first two digits read "47X", and i think all 47X models are 256 colors only. so far i've only seen trident8900d cards with …

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need info: brooktree ramdacs

Posted on 2022-08-09, 04:32

by

by noshutdown

in Marvin \ Video

in Marvin \ Video

i am trying to identify a picture of a slightly unique trident8900c card. while most 8900c cards came with dip 8bit ramdacs that supported up to 256 colors, this one has a plcc-44 ramdac from bt. unfortunately the picture is pretty blurry so i could only see the "bt" trademark, but not the exact …

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Re: Rendition Verite Thread

Posted on 2022-07-19, 09:00

by

by noshutdown

in Marvin \ Video

in Marvin \ Video

i posted 3 issues back in 2015, but no one seemed to have noticed. so i would bump a bit hoping someone would share some ideas. 1. v2200 with quake3, 3d graphics is okay, but the main menu screen flickers heavily, and the screen is split diagonally. this also happens with v1000 when triple buffering …

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Re: Unichip 367c memory question

Posted on 2022-07-18, 08:45

by

by noshutdown

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

PiotrUU wrote on 2022-05-05, 16:57: 128k cache only works up to 16M RAM ! is there any options in bios choosing cache mode write-through and write-back? 128k cache should cache for 16mb in wb mode, and 32mb in wt mode.

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Re: Celeron, the good bad and ugly.

Posted on 2022-03-29, 02:18

by

by noshutdown

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

indeed, pushing a celeron300a to 600 is very difficult, but quite a portion of 366 can do 550.

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Re: a few questions on finding 386 boards

Posted on 2021-08-02, 06:45

by

by noshutdown

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Are we talking "fastest" just in terms of CPU and RAM, or also video options? For anything involving graphics, the fastest 386DX40 will be one with VLB slots not limited by ISA bus bandwidths, i.e. on a 386/486 motherboard, such as one with OPTi 495SX chipset. A 32b bus (could also be EISA or MCA) …

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Re: Let's destroy the 440BX myth :-)

Posted on 2021-08-01, 10:12

by

by noshutdown

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

i remember that nvidia's driver documents mentioned that gigabyte 440bx mainboards' agp power regulator didn't comply with agp standard requirements, thereby causing unstabilities, something that the driver couldn't fix.

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Re: a few questions on finding 386 boards

Posted on 2021-08-01, 09:13

by

by noshutdown

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

ok guyz, isn't that just the difference between write through and write back? i would rather stick to WT because while WB is a few percents faster, i want larger cacheable range as i am stuffing 32mb into it to run win95 and quake2.

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a few questions on finding 386 boards

Posted on 2021-07-30, 10:22

by

by noshutdown

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

i'll try to be straight and short: 1. whats the fastest board/chipset you've seen for amd386dx40? is the umc491 fast or slow? this doesn't include rapidcad, 486dlc/slc or similar upgrades. 2. does win95 actually run on 386sx? official minimal requirements said 386dx but i don't think that 386sx …

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Re: Quake and 386...

Posted on 2021-07-21, 05:13

by

by noshutdown

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I believe I tried it on a 386SL20 in a laptop back in the day, only had 4MB of RAM. I had discovered that it would run DN3D while swapping like mad if you did it from inside Windows 3.11 DOS prompt with virtual memory enabled. That took forever to load and was all stop/start and jerky even at …

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Re: Native DOS games with framerate display built in

Posted on 2021-01-22, 04:47

by

by noshutdown

in DOS

in DOS

doom has a realtime framerate counter. run doom with -devparm parameter, there would be some black and white dots at the bottomleft of the screen, the number of white dots indicates how many realtics(70realtics=1second) it takes to render a frame. 1 white dot: 70/2=35fps(maximum framerate possible) …

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Re: need info on m$ quickbasic

Posted on 2020-11-23, 01:43

by

by noshutdown

in Milliways

in Milliways

cyclone3d wrote on 2020-11-20, 06:55: Found the 1.02 update documentation on Programmers Corner: QBASIC.zip So the 1.02 update was free from MS. a pity that its only the document and not the update patch. Epstein didn't kill himself maybe he did, guess he suffered depression because he knew too …

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