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USB on an 8 bit ISA Bus, it is possible!!!

When I looked in to this a couple of years back the chip itself seemed to have nonexistent availability as a bare component; maybe that has changed. I've actually got one of these but never gotten around to testing it.
 
pearce_jj said:
When I looked in to this a couple of years back the chip itself seemed to have nonexistent availability as a bare component; maybe that has changed. I've actually got one of these but never gotten around to testing it.
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CH375 and CH376 are available as chips fairly cheaply on aliexpress. For instance http://www.aliexpress.com/item/CH37...tic-and-new-free-shipping-ic/32395491988.html $10 for five pieces with free shipping.


pietja said:
If the shipping is so expensive why don't we make our own board?
The schematics, bios, driver, PCB and gal code are all available.
http://www.wch.cn/download/CH375X86_ZIP.html

Also the board that is available on aliexpress is exactly the same as the one in the Altium file that is included in the zip file.
View attachment 25784
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I've actually ordered a couple of these: http://www.aliexpress.com/item/Free...isk-USB-communication-in-stock/557608224.html Shouldn't be too difficult to interface to ISA with a little bit of glue logic.
 
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pietja said:
If the shipping is so expensive why don't we make our own board?
The schematics, bios, driver, PCB and gal code are all available.
http://www.wch.cn/download/CH375X86_ZIP.html

Also the board that is available on aliexpress is exactly the same as the one in the Altium file that is included in the zip file.
attachment.php
Click to expand...

I don't see source for most of the files -- only executables for the most part

gwk
 
jh1523 said:
I haven't dealt with taobao at all, how does the "agent" thing work?
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I just ordered a couple of these cards by using TaoBao agent Yoybuy.com
I went to TaoBao.com and searched for ISA USB, found a seller, provided the url of the seller's advertisement to yoybuy and had them place an order. Shipping plus the agent fee was about $11
 
jh1523 said:
I haven't dealt with taobao at all, how does the "agent" thing work?
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This was answered on the DP forum in various posts. It's a bit unsual for those of us used to ebay, but basically you find the stuff you want on TaoBao, then you pass the details (link) to the Taobao agent, they buy the stuff, add a fee and shipping, then you approve it and pay. There are many agents, but finding one that speaks English can be a battle.
You can try ones like http://www.newbuybay.com/
For DP posts on this you can go to DP and search of have a look at some of these -

http://dangerousprototypes.com/2014/12/29/on-the-first-day-of-taobao-christmas/
http://dangerousprototypes.com/2013/03/28/taobao-shopping-service-bhiner-review/
 
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