ZX81 Enhanced ULA replacement module.

ZX80 / ZX81 hardware and software offered for sale or swapping
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Andy Rea
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ZX81 Enhanced ULA replacement module.

Post by Andy Rea »

***SOLD OUT SOLD OUT ***

ZX81 Enhanced ULA replacment module.

£15.00 + postage.

instructions here http://www.debraclayton.webspace.virgin ... ulamk2.pdf

Paypal preffered but will accept other means of payment.

PM or email ap_rea@[NOSPAM]ntlworld.com for further details. (remove [NOSPAM] - edit by RWAP)

Regards Andy
Last edited by Andy Rea on Sun Nov 20, 2011 7:40 pm, edited 3 times in total.
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PokeMon
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Re: ZX81 Enhanced ULA replacement module.

Post by PokeMon »

Congratulations for excellent work.
Looks very nice. 8-)

I found that the EPM7128SQC-10 could be run at up to 100 MHz. That offers maybe the opportunity to run with double frequency in my ZX81 (13 MHz) in general, not only in turbo mode. ;)
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Andy Rea
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Re: ZX81 Enhanced ULA replacement module.

Post by Andy Rea »

PokeMon wrote:Congratulations for excellent work.
Looks very nice. 8-)

I found that the EPM7128SQC-10 could be run at up to 100 MHz. That offers maybe the opportunity to run with double frequency in my ZX81 (13 MHz) in general, not only in turbo mode. ;)
Thank you, i think it would need a fair bit of ROM hacking on the display routines to get it to run at double speed all the time.

Andy
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sirmorris
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Re: ZX81 Enhanced ULA replacement module.

Post by sirmorris »

Sounds like a challenge :geek:

Can I collect mine in person Andy?
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Andy Rea
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Re: ZX81 Enhanced ULA replacement module.

Post by Andy Rea »

next week C ?

Of course :D

Anything to save postage eh :twisted:

Andy
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RWAP
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Re: ZX81 Enhanced ULA replacement module.

Post by RWAP »

Hi Andy - I hope this sells quite well - I ought to point out that you can sell them through sellmyretro.com for a fairly minimal cost (basically a 2.5% final value fee - no listing fees, as compared to ebay)

Would certainly be a nice thing to offer alongside the ZXvid and ZXpand (although the ZXvid is made redundant by this)! :D
Prime
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Re: ZX81 Enhanced ULA replacement module.

Post by Prime »

Wouldn't mind one of these too, if only to have a play with, can I collect in preson too, asuming you are coming to the RCM meet Andy ?

Cheers.

Phill.
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Andy Rea
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Re: ZX81 Enhanced ULA replacement module.

Post by Andy Rea »

Yes Prime, i'm comming along next week, so thats no problem.

Hi Rich, i thought it best to give the regulars a chance of getting hold of these first at basically my cost price, and providing the feedback is good then maybe i will build more and offer them to the wider audience.

Andy
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sirmorris
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Re: ZX81 Enhanced ULA replacement module.

Post by sirmorris »

Andy Rea wrote:Anything to save postage eh :twisted:

Rumbled! :lol:

I'm hoping Rich is going to pop along too - save even more as I can hand a box-o-zxpand over ;)

C
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RetroTechie
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Re: ZX81 Enhanced ULA replacement module.

Post by RetroTechie »

RWAP wrote:(although the ZXvid is made redundant by this)! :D
Only very, very recently introduced, and it's already obsolete... ;) What's the ZX81 world coming to? :mrgreen:
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