Re: Fake 486 Processor?
Posted on 2020-09-10, 05:37
i am sure its real, its some extremely late productions made in 2007.
Re: horrible ide performance on sis496 mainboard
Posted on 2020-08-04, 06:40
i tried it on a umc8881 board and its equally slow, and so is the cf card. it displays pio4 mode but i feel its actually pio1 performance. would it get better in windows98?
Re: 440BX - BIOS shows 756MB and CPU-Z shows 1 GB: Which is right?
Posted on 2020-08-02, 15:18
the 440bx officially supports: 100fsb sdram density up to 16mb per chip(so each dimm size is limited to 256mb with 16 chips, and 128mb with 8 chips) 1gb total ram size(only in 4 dimms with 16 chips each) and since you are using a 512mb dimm, no doubt you are going out of spec and its very likely to …
Re: How important is a PCI graphics card in a 486?
Posted on 2020-07-30, 06:27
for dos performance, i surely have faith in my riva128 and gf2mx.
Re: How important is a PCI graphics card in a 486?
Posted on 2020-07-29, 09:10
it really differs from person to person, for me its extremely important because 3d cards are all in pci form, so i don't collect any non-pci 486 boards.
trying to explain edo vs fpm
Posted on 2020-07-29, 07:20
whats the difference between edo and fpm: for fpm, the output data becomes invalid once the cas line is pulled high, so the next read cycle cannot start until cpu has received the output data. for edo, the output data is still valid after the cas line is pulled high, until cas line is pulled low …
Re: MSI MS-4144 ver 2.1 manual and BIOS help
Posted on 2020-07-19, 15:05
wouldn't that set cache to WT? I'll give it a shot since the p24c setting i've been trying don't seem to work. Oh, I should mention my board has the AMI GUI bios. And thanks for the reply! i've confirmed it to work, jc8 sets 3x/4x ratio for amd486dx4 with 16k wb cache. its jc7 that sets wb cache to …
horrible ide performance on sis496 mainboard
Posted on 2020-07-18, 01:43
i am using a 8gb dom module, and the speedsys disk performance is horrible: it displays disk is in pio4 mode, but both buffered read and linear read are only at 2.6mb, while linear verify is 120mb. even an old regular harddrive shall score >5mb, and dom modules of this kind are usually rated at > …
Re: Fake ISSI cache chips?
Posted on 2020-07-17, 11:03
Certainly faked. Date code is silly and they weren't labled like that. Most likely 20ns or even 25ns ones. i agree that they are faked for the silly date, and i also suspect that all laser engraved ones are all faked. but, how should the real ones be labeled like? i am just not sure if the ones i …
Re: MSI MS-4144 ver 2.1 manual and BIOS help
Posted on 2020-07-17, 04:03
Anyone have jumper settings specific to the Am5x86-133 for this motherboard? I can't seem to get one of these chips stable on this motherboard, and I can't find any entry in the manual for it... regardless of how I set it up (cyrix 586 or intel dx4 WB jumper settings) it will boot and runt some …
Re: Any thoughts on a CL 5430 card?
Posted on 2020-07-17, 02:02
i think its one of the slowest pci video cards
Re: MSI MS-4144 ver 2.1 manual and BIOS help
Posted on 2020-07-16, 10:43
i have an idea: is it possible to figure out how the circuit of cpu voltage jumpers(jcv3 and jcv4) work so we can use more levels of voltage? currently there are only 3 levels: 3.45v, 3.8/4.0v(dunno which is correct) and 5.0v. also, what does the "factory reserved" jm1 and jv1 do? can anyone figure …
sis496 dram timing problem
Posted on 2020-07-15, 04:02
board is a msi4144. according to sis496 datasheet, there are 4 dram timing presets defined for 25, 33, 40 and 50 fsb, and you can only choose one of them: fastest: 3-2-2-2, recommended for 25fsb fast: 4-3-3-3, recommended for 33fsb slow: 5-3-3-3, recommended for 40fsb slowest: 6-4-4-4, recommended …
386 system passed doom but freezes in pcpbench
Posted on 2020-07-01, 07:53
board is a lenovo umc491 that looks like this one: https://www.vogons.org/download/file.php?id=56933&mode=view i actually got two boards of this model, because the first one had physical damage in a ram slot and therefore can only support 4 simms, however its the fastest 386 board i've seen so far, …
performance of isa16bit ide controllers
Posted on 2020-06-13, 16:45
in the 386 era, there were several brands of ide controllers: lg, umc, winbond, hmc, ali and some others that i can't remember now. has anyone tested whether they all perform similarly, or which one is faster?
Re: discuss: comparision of yamaha and roland midi synthesizers product line
Posted on 2020-05-28, 14:21
I always saw OPL4 as just the next budget pc sound card synth. Basically just an OPL3 with a simple Wave Table Rom bank, and a few megs of memory for additional samples. true, i have the same idea as yours. there are two solutions of the opl4: 1. a discrete ymf278 opl4 processor chip in combination …
Re: discuss: comparision of yamaha and roland midi synthesizers product line
Posted on 2020-05-28, 09:54
TG-77: The best FM module ever. 6-operator advanced FM + AWM with cross modulation. isn't it the fs1r? however, i dunno what was the yamaha equivalent of jv/xv series before motif was out? TG-500/300, later CS-6. tg-300/500 seems too old to match the jv1080/2080, also i think the ex5r was a match …
discuss: comparision of yamaha and roland midi synthesizers product line
Posted on 2020-05-28, 02:06
heres what i think, and i could be wrong: roland: sc series: economic computer and consumer oriented line, supported gm and gs(sc88pro and later had unofficial support for xg), very popular but didn't produce best sound quality, and lacked some features like detailed patch and effect tuning and …
Re: discuss: history of earliest language compilers for dos
Posted on 2020-02-26, 03:54
basic: dominated by micro$oft for most of the time. when turbo basic came up it posted a serious challenge, but then borland gave it up, rumored to be a deal of leaving basic to micro$oft and pascal to borland. vb.net is still the dominant basic today, although powerbasic and freebasic exists. …
borland c++ 2.0 runs with 8088
Posted on 2020-02-25, 09:01
i downloaded the manual and it says so, but the more popular v3.1 requires at least a 286 and 2mb of ram. has anyone tried this?
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