Related chipsets according to Wikipedia: VIA’s chipset one-upped BX on specifications, but widely reported southbridge complaints obviated that marketing advantage. AnandTech wrote , “From what we can gather, the VT South Bridge is actually identical to the B and is traditionally called the only when used in a ProSavage chipset. All four have serious problems related to DMA. New industrial boards from random Chinese manufacturers are now available through AliExpress.
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The Mother Board
For the unlucky, successful workarounds invariably required drivers and patches that were made only for Windows, starting with the famous 4in1 drivers more accurately described as a service pack. This page lists the last chipsets from each manufacturer that supported fully functional ISA slots for which I have been able to find example motherboards as evidence.
Regarding the compatibility of third-party ISA bridging, my conclusion from personal experience so far is that it is close enough for some things but not for others. The Linux kernel’s workarounds are not as effective as the 4in1 drivers. Some 3dfx Banshee cards immediately self-destruct in P1c33 class motherboards. Although the guide had teeth only through the “Designed for Microsoft Windows” logo program, ISA slots disappeared from all consumer non-industrial motherboards not long after the final version of the guide was published.
The maximum CPU supported depends on the specific motherboard model, the hardware revision gfxpfo the motherboard, and the version of BIOS that is on it.
Detuning the hard drive down to PIO mode kernel parameter libata. None found with ISA. Higher multipliers are available, but definitive compatibility information is hard to find. Therefore, both the reported maximum and the actual maximum may vary significantly, and buying the fastest CPU that was reported by somebody to work is always risky.
Some chip revisions were luckier than others. Unfortunately, few manufacturers keep that information up indefinitely for vintage parts. This is a possible explanation for why some very old or quirky ISA cards just refuse to work in newer motherboards.
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It enjoyed an extended life due to market rejection of the early 8xx chipsets that followed it, and for other reasons. If you want BX compatibility, you know where to find it. All four have serious problems related to DMA. Tabor3 Gateway OEM board: The following list of relevant threads won’t be updated, so do your own research.
Whether it was the root cause or gfpxro the innocent victim of Intel-centric engineering by other manufacturers, VIA hardware of this era was often problematic for users.
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The ones I found did not have an AGP slot. AnandTech wrote”From what we can gather, the VT South Bridge is actually identical to the B and is traditionally called the only when used in a ProSavage chipset.
Most cards should trip at 2. Gfxpor email if you have additional evidence or firsthand experience that would improve this list.
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Searching the forums vfxpro up lots of testimonials that a Sound Blaster worked with this or that board, but also reports of trouble with other devices, plenty of confusion about ISA bus mastering versus ISA DMA, and scary tidbits about what else can go wrong when you demand DOS compatibility out of P4-era hardware and firmware.
One of the less worst options is to maintain a collection of working hardware and spare parts from the last days of ISA.
The safe CPU options are those that gvxpro declared to be compatible in the motherboard’s manual. Nvidia says that AGP in the chipset is unusable due to severe system stability problems. The B southbridge that was prevalent at the twilight of ISA became the most notorious of all after an epic conflict with the Sound Blaster Live! More responsible manufacturers will keep a CPU compatibility list updated on their web site with clear indications of which revisions of what you need to have in order for it to work.
The reasons were “To improve system performance, reduce customer support costs, and ensure true ease of use in PC systems and peripherals.
Merely playing a Also, it may be the case that only certain steppings hardware revisions of a given CPU will work. The pullups introduce some lag. The entire ecosystem of hardware and software that had grown up around ISA was orphaned, and anyone who found the ostensible Gfzpro replacements to be a big disappointment was left with only bad options going forward.
VIA’s chipset one-upped BX on specifications, but widely reported southbridge complaints obviated that marketing advantage. The first nForce chipsets arrived in