Acorn Atom on Eurocard
Acorn Atom on Eurocard
Following Rolands 2K18 discussion, built his previous model I was wondering if there would be interest in building an Atom on 19" Eurocard boards.
New meets old.. using the 6847 (No godil) but a PS/2 keyboard interface.
Split over maybe multiple boards, and for the Glue Logic I want to use the EPM3064 (44 pin plcc) on small adapter boards.
You still can get them pretty easy on Ebay.
Just thoughts.
Kind regards, Bram
New meets old.. using the 6847 (No godil) but a PS/2 keyboard interface.
Split over maybe multiple boards, and for the Glue Logic I want to use the EPM3064 (44 pin plcc) on small adapter boards.
You still can get them pretty easy on Ebay.
Just thoughts.
Kind regards, Bram
Re: Acorn Atom on Eurocard
If you choose to go ahead with this, I have a number of NOS 2x32-way type b DIN41612 connectors to hand. I've got several right-angle male connectors for your card, and some straight-through females for your backplane. Even after keeping some behind for my (theretical) System 1 to System2/3/4/5 conversion, I have some spare.
Last edited by Kazzie on Mon Jul 16, 2018 3:22 pm, edited 1 time in total.
BBC Model B 32k issue 7, Sidewise ROM board with 16K RAM
Archimedes 420/1 upgraded to 4MB RAM, ZIDEFS with 512MB CF card
Acorn System 1 home-made replica
Archimedes 420/1 upgraded to 4MB RAM, ZIDEFS with 512MB CF card
Acorn System 1 home-made replica
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Re: Acorn Atom on Eurocard
Hi Bram,
you should contact Theo Waaijer.
Many years ago he tried to make one, but he did run into some difficulties.
Greetings, Wim...
you should contact Theo Waaijer.
Many years ago he tried to make one, but he did run into some difficulties.
Greetings, Wim...

Re: Acorn Atom on Eurocard
Let me contact him .
Re: Acorn Atom on Eurocard
In case you don't happen to look at the "Worth Taking a Look At" thread, I've posted about an auction of Eurocard racking that could be useful:
viewtopic.php?f=8&t=2506&p=208970#p208970
I hope you're a little closer than I am!
viewtopic.php?f=8&t=2506&p=208970#p208970
I hope you're a little closer than I am!
BBC Model B 32k issue 7, Sidewise ROM board with 16K RAM
Archimedes 420/1 upgraded to 4MB RAM, ZIDEFS with 512MB CF card
Acorn System 1 home-made replica
Archimedes 420/1 upgraded to 4MB RAM, ZIDEFS with 512MB CF card
Acorn System 1 home-made replica
Re: Acorn Atom on Eurocard
You've pretty much just described my AtomClone from 2009bprosman wrote: ↑Sun Jul 15, 2018 4:18 pmFollowing Rolands 2K18 discussion, built his previous model I was wondering if there would be interest in building an Atom on 19" Eurocard boards.
New meets old.. using the 6847 (No godil) but a PS/2 keyboard interface.
Split over maybe multiple boards, and for the Glue Logic I want to use the EPM3064 (44 pin plcc) on small adapter boards.
You still can get them pretty easy on Ebay.

I'd certainly considder releasing the design files as a starting point, should not be too hard to port to another CPLD series, and update with stuff like colour video, floppies etc.
Cheers.
Phill.
Re: Acorn Atom on Eurocard
Hi Phil,
Would love to see your files as a starting/inspiration point. Especially the keyboard stuff.
The AtomMMC definitively will be included.
Colour video is a wish but not sure what workable options there are if I want to go Godil-less
Kind regards, Bram
Would love to see your files as a starting/inspiration point. Especially the keyboard stuff.
The AtomMMC definitively will be included.
Colour video is a wish but not sure what workable options there are if I want to go Godil-less
Kind regards, Bram
Re: Acorn Atom on Eurocard
Bram,
You should definitively visit an ABUG meeting where you can see a rack Atom
. Furthermore I have a board and an AVR for connecting a ps/2 keyboard to the 7447 and 8255. And as soons as my holidays start I will investigate an alternative for the godil. You may also benefit from that....
Greetz, Roland
You should definitively visit an ABUG meeting where you can see a rack Atom

Greetz, Roland
FPGAtom: much better than Atom2k15 which was even better than the real thing.
MAN WOMAN
MAN WOMAN

Re: Acorn Atom on Eurocard
For those knowing their classics might recognize my (partial) Kicad drawing
