Re: The patched K6plus BIOS repository gets a new home!
Posted on 2023-05-19, 22:03
Thank you.
Re: 386DX-33 build video and notes
Posted on 2023-05-11, 02:59
Very nice... I also am accumulating parts for a 386 build... One improvement to your build would be to remove the 8-bit ISA slot at the end of the board and make room for a PCB that could accommodate a PS/2 interposer for your KBC.
Re: Recommend a couple capacitors.
Posted on 2023-05-04, 23:54
There's also ~23 1000uf 6.3v KZG caps as well. A few are around what appears to be VRMs for various things. For those, what's most important, look for something that's 8x11.5mm... That means if you have to go down to 820uF, so be it. Ideally, you want something ultra low ESR for the memory and …
Re: Recommend a couple capacitors.
Posted on 2023-05-04, 12:55
I like the idea of polymers but, it seems you can often go with a lower capacitance rating and I couldn't find a reasonable explanation as to why and how. So my brain just defaulted to replace with "like" components. If no one has an objections I'll order the polymers linked above. Don't forget the …
Re: Best CPU for Gigabyte P4 Titan GA-8ITXE (rdram)
Posted on 2023-05-04, 12:50
After two years I bought P4 HT Northwood 3.06/512/533. After setting the fsb to 133 and ram divisor, prime95 shows an error after a few seconds. Win XP has never crashed at all. The question is whether it is the fault of too high FSB or temperatures. Immediately after boot, the temperature of the …
Re: Recommend a couple capacitors.
Posted on 2023-05-04, 01:56
TheMobRules wrote on 2023-05-04, 01:23: EDIT: these KEMET polymers seem like a good option Yes, you will need polymers... Those Panasonic caps will not do... Also, I don't recommend Kemet polymers. Get a quality Japanese brand.
Re: Necroware's S7-VRM
Posted on 2023-05-01, 13:33
Good job... I followed your series and will be building one of your boards for my Intel VX-based motherboard. Thanks
Re: Abit KT7A (KT133A/VIA686B), Athlon XP Mobile 2500+
Posted on 2023-04-27, 02:23
-Athlon XP-M (Barton) @2GHz (148x13,5) I was thinking... Maybe it's better to run the board with 100mhz FSB and a really high multiplier as opposed to 133+ Mhz FSB... That way you can go as low as 3 x 100 (300mhz), whereas you are stuck with a minimum of 400mhz with 133mhz. What are you using for …
Re: Abit KT7A (KT133A/VIA686B), Athlon XP Mobile 2500+
Posted on 2023-04-16, 03:21
Joseph_Joestar wrote on 2023-04-15, 10:15: That said, I am using a Thoroughbred B 1700+ and I imagine that particular CPU doesn't stress the board a whole lot. Yes, I think you're alluding to the root of the issue... I think Barton XP causes a voltage droop on the AGP. The 6800 cards worked fine …
Re: Cirrus Logic GD5429 VLB significantly slower than a TSENG ET4000
Posted on 2023-04-09, 16:10
That's correct, Doom only uses 8-bit writes to VRAM. Only FastDoom mode 13h and mode VBR (VESA with backbuffer) executables use 32-bit writes to VRAM, for example I noticed huge speedup with Trident TGUI 9440AGi VLB cards (full 32-bit VLB support). Those modes also benefit a lot from the linear …
Re: UMC IDE/EIDE controller datasheets
Posted on 2023-03-29, 01:53
I'll have to dig it out and try again at some point. Keep in mind that bus mastering only works under plain DOS mode though. The UMC Windows driver does support PIO+FIFO mode and I believe it has the 1-16 speeds hardcoded in it unlike the DOS one. It's been a while so I don't remember exactly. Yea, …
Re: UMC IDE/EIDE controller datasheets
Posted on 2023-03-28, 22:48
The FIFO is a big boost; according to my notes with a fast mechanical drive, I had 6 MB/sec with no driver, 11 MB/sec with FIFO mode, and 14 MB/sec with bus mastering mode on a UM8886B. Note that SSDs on these PIO-mode-only controllers may not actually be faster than a fast mechanical drive, …
Re: Voodoo 3 2000 125MHz?
Posted on 2023-03-27, 03:37
I purchased two of these OEM 125Mhz cards at the beginning of the pandemic. When I arrived at the seller's house, he was hesitant to sell them to me, but I was stern with him (I did afterall travel far to get to him). Anyways, flashing to 2.15.11 was a no go, I got the same error as the OP in this …
Re: Abit KT7A (KT133A/VIA686B), Athlon XP Mobile 2500+
Posted on 2023-03-27, 02:48
Well, the Voodoo3 AGP was another videocard that the KT7A did not like. I ran Expendable and it crashed to desktop. I then tried appending "-nocputest" to the game's go.exe with a shortcut, and then the game froze (hard lock) and the system required a reset. I then tested with my Biostar M7VKD and …
Re: 3dmark99 MegaThread
Posted on 2023-03-27, 00:33
Athlon XP (Barton) 2.13Ghz, 256MB SDRAM Windows 98SE DirectX 6 (need an early driver for DX6) Voodoo3 2000 - default clock, default 3DMark99 template (800x600, etc...) Result: 6291 3DMarks 32288 CPU 3DMarks 3dmark99-v32k.png Looks right for this card. the V3 3K seems to score a couple hundred points …
Re: ASUS VL/I-486SV2GX4 - 5x86 X5 160MHz - OPL3 CT1600 - ET4000W32P - Midi Love
Posted on 2023-03-22, 17:01
I see you're also of the rare breed that preemptively re-caps all his old hardware, even if nothing's wrong with it... One thing you missed though are the tantalums on the motherboard... Tantalums have a finite lifetime, and tend explode after several decades. But Asus used good ones, and you can …
Re: 486 board with UMC 8881E/8886B: The winner is: EDO without L2 (terms and conditions apply)
Posted on 2023-03-13, 21:14
That's comparing apples and oranges. The 8881E and 8886B are the last revision of the UMC 8881/8886 chipset, which is likely years newer than the SiS 471 on the VL/I-486SV2GX4. The SiS competitor to the UMC8881/8886 is the SiS 496/497. Again, the only latest revision of that chipset has EDO support …
Re: 486 board with UMC 8881E/8886B: The winner is: EDO without L2 (terms and conditions apply)
Posted on 2023-03-13, 00:07
Fascinating tests... So far I am finding PCI 8881E/8886B (HOT-433) a lot more stable than the VLB VL/I-486SV2GX4...
Re: ABIT AB-AH4 / AB-AH4T Write Back L1 Cache
Posted on 2023-03-05, 02:52
EDIT2: I think i got everything working now. The L1 cache speed jumped from ~89MB/s to ~129MB/s. Love it. NB! The CTCM 1.6 and 1.7 claim that i have 2048kB of L2 cache and both L1 and L2 work in write-through mode. CTCM 1.5 doesn't recognize L2 cache at all, but at least claims that L1 is working …
Re: VCS - A capture utility for certain Datapath capture cards
Posted on 2023-03-02, 03:49
I can give you the source code and build instructions, that's about it. Better that someone who actually uses Windows, can test the program properly with its hardware in that environment, and wants to correspond with Microsoft to deal with Windows Defender's heuristics maintains the Windows version …
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