More ZXpands Available Now
Re: More ZXpands Available Now
Hi,
SirMorris - are they already out? A guy from university wanted to order one.
Is it possible, or is it too late?
Byez.
Y
SirMorris - are they already out? A guy from university wanted to order one.
Is it possible, or is it too late?
Byez.
Y
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/
"MONOCHROME" issue 5 - (Spring 2014) free paper/PDF magazine about ZX81: http://tiny.pl/q2m44
ZX81 COMPETITIONS 2007/2009: http://zx81.republika.pl/
Re: More ZXpands Available Now
There will be some more ready soon. I'll let you know.
Re: More ZXpands Available Now
Thank You very much, I already forwarded this message.
HNY.
HNY.
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/
"MONOCHROME" issue 5 - (Spring 2014) free paper/PDF magazine about ZX81: http://tiny.pl/q2m44
ZX81 COMPETITIONS 2007/2009: http://zx81.republika.pl/
Re: More ZXpands Available Now
Hi Charlie, do you keep a waiting list for the next batch of ZXpands?
I'd like to express my keenness to buy one
Cheers, Robs
I'd like to express my keenness to buy one
Cheers, Robs
Re: More ZXpands Available Now
No list as such, I can pop a message here next time a batch goes up. Most people add a watch for the item on SellMyRetro. I try to re-use the same auction listing each time so that the alerts are valid.
There should be some soon.
C
There should be some soon.
C
Re: More ZXpands Available Now
Sweet, cheers! Watch it shall be.
Re: More ZXpands Available Now
Sorry, I realise it's probably a thankless and Sisyphean task selling small-batch hardware. Endless stream of eager and impatient punters, while the satisfied ones are sat there in their spare bedroom not bothering you any more
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Re: More ZXpands Available Now
Because they are having too much fun....colonel32 wrote:Sorry, I realise it's probably a thankless and Sisyphean task selling small-batch hardware. Endless stream of eager and impatient punters, while the satisfied ones are sat there in their spare bedroom not bothering you any more
(Sorry, that's not very helpful )
Mr C has made many Zeddy owner happy, hopefully he will make you happy soon
Mark
ZX81 Variations
ZX81 Chip Pin-outs
ZX81 Video Transistor Buffer Amp
Standby alert
There are four lights!
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb
Looking forward to summer later in the year.
ZX81 Chip Pin-outs
ZX81 Video Transistor Buffer Amp
Standby alert
There are four lights!
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb
Looking forward to summer later in the year.
Re: More ZXpands Available Now
I'm surprised to see that I'm reaching the last of the previous batch of PCBs. I didn't expect that so soon. I'm considering a redesign to use more accessible chips. I can't keep sourcing EPROMS, GALs and now very expensive DIP RAMs.
There is ZXpand 2, which I could theoretically take up again as it was basically working (just very very frustrating on the programmable logic side of things), but I suspect now that the AY potential is what drives demand.
Does the panel think that it's time for a new design?
C
There is ZXpand 2, which I could theoretically take up again as it was basically working (just very very frustrating on the programmable logic side of things), but I suspect now that the AY potential is what drives demand.
Does the panel think that it's time for a new design?
C
Re: More ZXpands Available Now
That is a very difficult decision.
If ZXPand is not available for a while there is Pokemons ZXBlast available that might kill demand for ZXPand. It's very different but it's also very promising.
I'd first have a look wether you are willing to invest another lot of time into this. Specially into the manufacturing.
In doubt I would just order a smaller batch of old PCBs and make them.
For eprom you could use the cheap W27C512.
I always use them (even if only 16 k out of 64 are used) and order them from China.
RAM Is definitely an issue while GALs are available again at reasonable prices.
Maybe just redesign ZXPand 1 to use a cheap SMD RAM? Otherwise, stay with the old RAM and increase the price.... This could also make manufacturing more attractive for you
I hope my thoughts are useful to you.
kind regards Paul
If ZXPand is not available for a while there is Pokemons ZXBlast available that might kill demand for ZXPand. It's very different but it's also very promising.
I'd first have a look wether you are willing to invest another lot of time into this. Specially into the manufacturing.
In doubt I would just order a smaller batch of old PCBs and make them.
For eprom you could use the cheap W27C512.
I always use them (even if only 16 k out of 64 are used) and order them from China.
RAM Is definitely an issue while GALs are available again at reasonable prices.
Maybe just redesign ZXPand 1 to use a cheap SMD RAM? Otherwise, stay with the old RAM and increase the price.... This could also make manufacturing more attractive for you
I hope my thoughts are useful to you.
kind regards Paul
In theory, there is no difference between theory and practice. But, in practice, there is.