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ET4000AX ISA - swap 80ns DRAM for 70ns?

Hi, I’ve recently got an ET4000AX Isa card and noticed it’s got 80ns DRAM Would it be a worthwhile upgrade to swap out the ram for 70ns DRAM? Looking at the jumper settings for the card, it’s already set for ‘turbo display memory access’ http://www.uncreativelabs.de/th99/v/U-Z/51718.htm I’m trying …

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

I swapped out my Mach64 on this Amiga Bridgeboard pc for a Tseng ET4000AX and saw an increase in framerates :) Fdoom 8.8.8 timedemo demo3, one level of green border, ET4000AX in brackets -Nosound -nomouse -ram Fdoom 14.227 (16.262) Fdoomvbr 14.493 (15.334) Fdoom13h 13.389 (14.352) Sadly vbd is still …

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

I think this amiga bridgeboard pc bios is unable to work with the LFB (aperture) on this ATI Mach 64, to be honest. Even though M64VBE says it's enabling the aperture, M64Diag then always says the aperture is disabled. If I get time to dismantle the 486 I'll try the ATI in that, but that's quite a …

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

Hi! How do I find the LFB address? Is the dos memory layout just displayed using the mem /c command? I have tried it without using the -ram command, no improvement. I’ve also tried the machine using with and without emm386 and with and without EMS ram. The VBD error is simply "Program too big to fit …

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

I managed to get FDoomVBR working with this ISA ATI Mach64. M64VBE v2.21 didnt seem to set up VBE2.0 correctly and FDoomVBR wouldnt load, however using an older version M64vbe v1.04 works ok. -timedemo demo3 -nosound -nomouse -ram, full resolution with one level of green border: FDoom 14.227 fps …

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

now that kixs has shown me how to enable 0ws on my ISA Mach64 I have tried mode Y FDoom again instead of using FDoom13H. Wow, big speed improvement! Previously I was getting 13.344 fps for demo3, now I'm getting 15.013! I guess the Mach64 likes using mode Y with 0ws, as previously it was slightly …

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

Hi, When i run FDoom (or FDoon13H or any of the other modes) the game launches, will play the opening demo and then automatically quite back to DOS with a timedemo result. This is happening now even if I havent started the game with the timedemo command... any ideas why this might be happening? …

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