Zx81 Memory mod

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Littlejohn
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Zx81 Memory mod

Post by Littlejohn »

I just finished 'upgrading' one of my zx81's. it now has 32K of internal memory.
I built it from the information found here: http://www.zx81.de/english/32k-rame.htm
Thanks ZX-Team
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sirmorris
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Joined: Thu May 08, 2008 5:45 pm

Re: Zx81 Memory mod

Post by sirmorris »

That's a really nice job. You should see mine - it's a total mess :lol:

I must revisit my mod now I know which end of a soldering iron's the hot one ;)
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yerzmyey
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Re: Zx81 Memory mod

Post by yerzmyey »

An interesting question:
when the memory is internal: hi-res mode work without any problems (like on ZX81 1Kb)??
Greetz.
IN NIHILUM REVERTERIS - a big text-adventure game for ZX81: http://tiny.pl/g2m6m
"MONOCHROME" issue 5 - (Spring 2014) free paper/PDF magazine about ZX81: http://tiny.pl/q2m44
ZX81 COMPETITIONS 2007/2009: http://zx81.republika.pl/
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sirmorris
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Re: Zx81 Memory mod

Post by sirmorris »

This circuit has the mod built-in.
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yerzmyey
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Re: Zx81 Memory mod

Post by yerzmyey »

Aha. Thx.
Well - the result is the same somehow. ;) Good news. ;)
IN NIHILUM REVERTERIS - a big text-adventure game for ZX81: http://tiny.pl/g2m6m
"MONOCHROME" issue 5 - (Spring 2014) free paper/PDF magazine about ZX81: http://tiny.pl/q2m44
ZX81 COMPETITIONS 2007/2009: http://zx81.republika.pl/
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