Print Page - What's the story with FPGA based Gate Arrays?

Title: What's the story with FPGA based Gate Arrays?
Post by: salvogendut on 20:15, 23 August 25

I was reading some old forum posts about the scarcity of GA chips when I actually searched for them on Ebay and found something like this:

GA replacement (https://www.ebay.it/itm/196668423194?_skw=40007+gate+array&itmmeta=01K3C4GTWBJ8QBDZFDGKAJ04PJ&hash=item2dca59fc1a:g:fp8AAOSw6MVm8917&itmprp=enc%3AAQAKAAAA8FkggFvd1GGDu0w3yXCmi1fdnoGiklqdRN6D0UK4Jn2LiwsCAstiL4LqXm3HdOfcUu7lChDmo%2FBTzMWPGYwuwDR7MCeQ5e9xLT0bJg9TR1%2B3omnG4wU8vJ8EQa2kWf%2BxrEvT4PYhaGlbjTA7W%2BXL1yrS%2BVzsI5vNmgjXarLZEfOruORkleEGwMAoHH5BT4U%2Bq%2B%2BrnJ8vtqXa9wHrra0KmopLwVCbz46IY1A%2F8i68NxbcpXqfK2i4URrRxCp3JlggffukPMzRX8hQUxmlMKtZVt%2BYTpreKkc2WmsOSDUq7lasW8WzRVeOjMeW34d%2FUaEdFQ%3D%3D%7Ctkp%3ABk9SR6iuw4SbZg)

What are these things? Who makes them ? Why are they so expensive?

Title: Re: What's the story with FPGA based Gate Arrays?
Post by: Brocky on 05:28, 24 August 25

https://www.vretrodesign.com/products/vr40010-amstrad-cpc-gate-array-replacement
dunno if they work tho...

theres a site you can order NOS 40007 and 40010s....they only have 4 40007s left...but over 100 40010s
https://www.icompplus.com/en/shop?search=40010

Title: Re: What's the story with FPGA based Gate Arrays?
Post by: salvogendut on 06:04, 24 August 25

Thanks @Brocky they seem only slightly less expensive than the ones on Ebay but I guess it's not easy to make them. I can see the schematics and everything is published on github at https://github.com/codedchip/AMSGateArray. The Xilinx CPLD by itself is like 10 Euros , perhaps another 2 euros for the PCB if made in large quantities and I think 15 Euros should be enough to cover the expenses. So I guess those are fair prices on the website you provided

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General Category => Technical support - Hardware related => Topic started by: salvogendut on 20:15, 23 August 25