ZX81 Enhanced ULA replacement module.

Andy Rea · Post by **Andy Rea** » Fri Nov 18, 2011 8:59 pm

***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

PokeMon · Post by **PokeMon** » Fri Nov 18, 2011 10:28 pm

Congratulations for excellent work.
Looks very nice.

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.

Andy Rea · Post by **Andy Rea** » Fri Nov 18, 2011 11:52 pm

PokeMon wrote:Congratulations for excellent work.
Looks very nice.

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

sirmorris · Post by **sirmorris** » Sat Nov 19, 2011 12:14 am

Sounds like a challenge

Can I collect mine in person Andy?

Andy Rea · Post by **Andy Rea** » Sat Nov 19, 2011 12:39 am

next week C ?

Of course

Anything to save postage eh

Andy

Post by **RWAP** » Sat Nov 19, 2011 2:34 am

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)!

Prime · Post by **Prime** » Sat Nov 19, 2011 3:20 am

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.

Andy Rea · Post by **Andy Rea** » Sat Nov 19, 2011 9:24 am

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

sirmorris · Post by **sirmorris** » Sat Nov 19, 2011 9:36 am

Andy Rea wrote:Anything to save postage eh

Rumbled!

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

C

RetroTechie · Post by **RetroTechie** » Sun Nov 20, 2011 9:55 am

RWAP wrote:(although the ZXvid is made redundant by this)!

Only very, very recently introduced, and it's already obsolete...

What's the ZX81 world coming to?

Sinclair ZX80 / ZX81 / Z88 Forums

ZX81 Enhanced ULA replacement module.

ZX81 Enhanced ULA replacement module.

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