Looking for a 16K RAM extension for ZX81

ZX80 / ZX81 hardware and software requested for either sale or swapping
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bru65pag
Posts: 13
Joined: Sun Dec 20, 2015 11:09 am

Looking for a 16K RAM extension for ZX81

Post by bru65pag » Tue May 30, 2017 10:33 am

Good morning,

I'm willing to buy a 16K RAM extension for my ZX81. If any of you has one to sell, please contact me.

Best regards. Bruno.

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RetroTechie
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Location: Hengelo, NL
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Re: Looking for a 16K RAM extension for ZX81

Post by RetroTechie » Tue May 30, 2017 11:56 pm

Soldering iron at hand? ;)

ZX81 internal RAM expansion
Bitcycle.org - just flipping bits

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mrtinb
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Location: Denmark
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Re: Looking for a 16K RAM extension for ZX81

Post by mrtinb » Sun Jun 04, 2017 11:06 pm

You can also build an external one on a stripboard: 16K RAM EXPANSION on strip board.

Edit: If the ZX81 is inside it's case, you would have to add space between the edge connector and the ICs. Otherwise the case will prevent it to be inserted in the port.
Martin
ZX81, Lambda 8300, Commodore 64, Mac G4 Cube

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