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486 Motherboard with PS/2 Port

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First post, by carlostex

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OK. I have been looking for a nice socket 3 486 motherboard, which must have PCI and ISA only. It also must have PS/2 mouse port. I don't care if it only has 256KB of cache but i would prefer 512KB. It also must support 25/33/40/50 MHZ FSB and have a coin Li-ion CMOS battery. Chipset wise i guess the best options are the SYS 496/497 and the UMC 888x ones.

I found that there is the Zida Tomato Board 4DPS ver 2.1 board, unfortunately it seems that a couple of them were sold recently on eBay.

What is in your opinion the best board with these characteristics?

Does anyone have a good condition 4DPS Ver 2.1 for sale?

Reply 1 of 3, by keropi

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I had a SOYO 4SAW-2 , it worked with every 486 variant known, was PCI/ISA and had a working ps2 mouseport as well... so it's another mobo you can add to your search list 😀

🎵 🎧 ⏳ ⚡ PCMIDI MPU , OrpheusII , Action Rewind , Megacard and 🎶GoldLib soundcard website

Reply 2 of 3, by 5u3

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SIS 496/497 doesn't have a FSB/PCI divider, so running a 50 MHz bus with PCI cards does not really work on these boards. ISA should be fine though...

I recommend the Asus PVI-486SP3.

Reply 3 of 3, by carlostex

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Ackkk.... The Soyo has Nickel battery... I'd give up faster on the 50MHZ bus... I'm really crazy about the 4DPS right now... That one is a must for me!

By the way does anyone have a manual or jumper settings to a Newtech/SMT4321-22B board? It was also called a Terminator board and had ALI 1489/1487 chipset. Any thoughts about this board and chipset?

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