Sinclair ZX80 / ZX81 / Z88 Forums

Beautiful! I especially like the resistors hidden inside the footprint of the DIL socket. As I have another CPLD spare (unsure of its working status though) I think I should go for an issue 2 also. Is anyone else in the UK thinking of getting one? Would you be happy to combine shipping for a couple...

You can buy ZX Max 48 issue2 PCB from here (add AY sound and Kempston Joystick port) https://www.sellmyretro.com/offer/details/25865 Download document and CPLD file from here https://onedrive.live.com/?id=E0ADBB58ADB8D869%21141&cid=E0ADBB58ADB8D869 Sorry for high shiping cost to outside USA, this is...

Andy Rea wrote: ↑Sun Dec 03, 2017 10:25 pm i have ordered PCB and will sometime buy parts, i have programming stuff for altera already i'm not really a spectrum guy but this looks like a fun project and a good use for one of my empty zx81 cases

regards Andy

Thank you !

As in the last time I got about 50% fake chips from China I am more careful now what I buy. I prefer reliable sources. It's depending on the chip type. The DS1302 I bought last time were not working or even crashing my system (different suppliers show different behavior). I agree, there are many se...

The CPLD (EPM7128SLC84) is hard to find in Europe for a reasonable price. I think that's why I never used it. Can get one for around 30 EUR but EOL product as well. Yes, it is EOL product but still can find it from EBAY at $2-$3 (almost sellers are from CHINA) https://www.ebay.com/sch/i.html?_odkw=...

Paul wrote: ↑Fri Dec 01, 2017 10:37 am Just purchased one.

Thank you!

That looks good - it would be worth starting a thread under Spectrum -> Hardware to maybe explain a bit more about this and what makes it different from the other Spectrum clones :D Actually there is a thread already, if there is any question I can answer there http://sinclairzxworld.com/viewtopic....

You can buy ZX Max 48 PCB from here

https://www.sellmyretro.com/offer/detai ... only-25865

Download document and CPLD file from here

https://onedrive.live.com/?id=E0ADBB58A ... 58ADB8D869

1024MAK wrote: ↑Tue Nov 21, 2017 5:30 pm

However, it should have either a green or a red solder resist on the bottom

Mark

Good idea

Here is another one in Ben Heck's case