My new baby!

Any discussions related to the creation of new hardware or software for the ZX80 or ZX81
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sirmorris
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Location: oxon, uk

My new baby!

Post by sirmorris » Wed Mar 15, 2017 1:00 pm

Hi all,

I'm pleased to finally be able to announce the imminent arrival of a new member of the ZXpand family - ZXpand+

ZXpand was one of my original works from many years ago and as a result suffered from certain challenges in construction - mainly from the use of obsolete parts but also naive design decisions which made for a tiring build.

It was always my intention to move to more modern parts and finally this has happened. The new design uses SMD RAM and CPLD in place of the now less easily obtainable slim DIP RAM and GAL parts. As a bonus the board should run cooler due to reduced power draw.

100% hardware and software compatible with the original ZXpand, the plus point is the addition of on-board AY sound. The boards may well ship in 2 versions, one with and a cheaper one without the chip pre-fitted. Sound chips may be simply fitted at a later time, if so desired.

There is no plan for a joystick port as yet, simply because of board space and routing complexity.

The board layout is pretty much finalised and pending some tweaks and a period of severe punishment by a seasoned ZXpand punisher I believe it's ready for production. A realistic release date is mid to late April.

Price is estimated to be slightly higher than the existing ZXpand, but less than the combined ZXpand+AY.

I will still produce AY daughter boards for those with the original ZXpand. There will also be a very limited supply of Issue 3 boards available before then - but as I am reaching the bottom of the pile I thought this was the right time to produce a new generation.

Charlie
--=== ZXpand+ ... A more moderner all-in-one upgrade solution for ZX81 ===--
* SD/MMC storage * 32K Hires-capable RAM * AY sound chip * Joystick port * Serial *
* BASIC enhancements - plug & play * Reset button * Auto-boot facility *

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blittled
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Location: Northwestern Pennsylvania, USA

Re: My new baby!

Post by blittled » Wed Mar 15, 2017 2:54 pm

Congrats on the new baby :D . May the ZXPand+ have a long and successful life.
2X Timex Sinclair 1000, ZX81, ZX80Core, 5X 16K Ram Pack, ZXBlast, ZX P file to Ear Input Signal Converter, Elf II

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Andy Rea
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Location: notts UK

Re: My new baby!

Post by Andy Rea » Wed Mar 15, 2017 3:15 pm

Whooey fantastic news

Take my money already were is the pre-buy button :geek:

Regards andy
6 x ZX81, 1 x TS1500 , 1 x +3e, 1 x timex 2040 printer, 1 x timex 2020 cassette deck, siclair printer and some spectrum

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sirmorris
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Location: oxon, uk

Re: My new baby!

Post by sirmorris » Wed Mar 15, 2017 3:25 pm

9f275ed6c9049b5530a7eeb7385d13b1.png
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--=== ZXpand+ ... A more moderner all-in-one upgrade solution for ZX81 ===--
* SD/MMC storage * 32K Hires-capable RAM * AY sound chip * Joystick port * Serial *
* BASIC enhancements - plug & play * Reset button * Auto-boot facility *

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sirmorris
Posts: 2781
Joined: Thu May 08, 2008 5:45 pm
Location: oxon, uk

Re: My new baby!

Post by sirmorris » Wed Mar 15, 2017 3:28 pm

IMG_3169.jpg
(1.89 MiB) Downloaded 628 times
IMG_3170.jpg
(3.31 MiB) Downloaded 628 times
--=== ZXpand+ ... A more moderner all-in-one upgrade solution for ZX81 ===--
* SD/MMC storage * 32K Hires-capable RAM * AY sound chip * Joystick port * Serial *
* BASIC enhancements - plug & play * Reset button * Auto-boot facility *

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Paul
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Joined: Thu May 27, 2010 8:15 am
Location: Germanys west end

Re: My new baby!

Post by Paul » Wed Mar 15, 2017 5:08 pm

Andy Rea wrote:
Wed Mar 15, 2017 3:15 pm
Whooey fantastic news

Take my money already were is the pre-buy button :geek:

Regards andy
Yes. Count me in for a pre order!!!
In theory, there is no difference between theory and practice. But, in practice, there is.

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mhudson52
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Joined: Tue Sep 27, 2016 2:17 am

Re: My new baby!

Post by mhudson52 » Wed Mar 15, 2017 5:43 pm

Does this mean my new enclosure design is already obsolete? :shock:
TS 1000 bought in 1982 and brought back to life by Sir Ian

TCF
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Joined: Mon Oct 12, 2015 12:59 am

Re: My new baby!

Post by TCF » Wed Mar 15, 2017 6:52 pm

Stick me on the pre-order list!

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PokeMon
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Joined: Sat Sep 17, 2011 6:48 pm

Re: My new baby!

Post by PokeMon » Wed Mar 15, 2017 8:20 pm

Nice work - good looking. 8-)
This would be interesting for Mahlerts next week.

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dasteph
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Joined: Fri Nov 27, 2015 2:51 am
Location: Sydney, AU
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Re: My new baby!

Post by dasteph » Wed Mar 15, 2017 8:24 pm

Congratulations, nice work. If there is a list count me on it. 2017 seems to be the year of the expansion, with the ZXblast and now the ZXpand+.

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