VOGONS


First post, by The_Pope

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Hello everyone,

Since you really, really inspired me with the new PCMCIA sound card project, I thought about another one: USB controllers. Any 386 or 486 with enough RAM can run Windows '98SE, which supports USB nicely.

So, I, uh... took the liberty of e-mailing Opti, who still have USB 1.x chips for sale. They told me they have low profile chips left in stock.

Furthermore, they even offer schematics on how to implement their chips on their website: http://www.opti-inc.com/html/usb1394-2003.html
Problem is, those cards are for regular 32-bit PCI and for Cardbus. But maybe they can be made into 16-bit PCMCIA?

I'm pretty sure a lot of us would benefit from such cards. For desktop ISA computers, most of the reasons why you'd need a USB port can be solved, as was discussed here. For wifi, you get an Ethernet to wifi converter and an ISA Ethernet card, etc.
But laptops with no expansion apart from 16-bit PCMCIA?

Also, writing drivers is out the window - if I understand correctly, the drivers are already written.

Stop the world...I want to descend.

Reply 1 of 8, by weedeewee

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Cardbus is liking to PCI
PCMCIA 16bit is more liking to ISA.
it seems like your idea is already dead in the water.

Right to repair is fundamental. You own it, you're allowed to fix it.
How To Ask Questions The Smart Way
Do not ask Why !
https://www.vogonswiki.com/index.php/Serial_port

Reply 3 of 8, by Bondi

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There was this OXCFU950 chip mentioned in this topic Re: Do those exist at all: Serial-to-USB / Parallel-to-USB / SCSI-to-USB / PCMCIA (Type I or II) to USB adapters ?
Someone even claims to sell them on Alibaba https://www.alibaba.com/product-detail/Cheap- … 0320894286.html Not sure it it's realthough.

PCMCIA Sound Cards chart
archive.org: PCMCIA software, manuals, drivers

Reply 4 of 8, by The_Pope

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Bondi wrote on 2021-10-31, 13:32:

Not sure it it's realthough.

Besides, there are no schematics for the original card, and since it was made for Amigas, there are probably no drivers for Windows and Linux.

Stop the world...I want to descend.

Reply 5 of 8, by Bondi

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Did you check the Datasheet for the chip? The link is in the post I've linked to.
And there are some drivers here https://www.driverguide.com/driver/detail.php … riverid=1364221

PCMCIA Sound Cards chart
archive.org: PCMCIA software, manuals, drivers

Reply 6 of 8, by The_Pope

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I did see the datasheet, but it's still a bit of a long shot:

- procure the chips
- design a new card

What I propose does away with the first problem. I don't know if it cancels the second problem, though. If someone takes a look at the Opti designs, will they be able to make a 16-bit PCMCIA card from that? Is the chip even usable with 16-bit PCMCIA?
And I could ask the same question about the 32-bit PCI design - can a 16-bit ISA card be made from that? I have no idea.

But hey, if we group-buy those chips from China, then sure!

Stop the world...I want to descend.

Reply 7 of 8, by weedeewee

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Given the opti chipset. Unless you know or have heard of a way to stick a pci card in an ISA slot, the answer will be an easy No.
and even If you have heard of such a way there will still be a driver nightmare.

Right to repair is fundamental. You own it, you're allowed to fix it.
How To Ask Questions The Smart Way
Do not ask Why !
https://www.vogonswiki.com/index.php/Serial_port

Reply 8 of 8, by Bondi

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Ran across this video today. It's actually our fellow vogoner yyzkevin showing more amazing things.

CH375 "ISA USB" - PCMCIA Edition https://youtu.be/WaWHxa2fFc4

PCMCIA Sound Cards chart
archive.org: PCMCIA software, manuals, drivers