I take my hat off to you Andy and your vision for that poorly zeddy brought back to life is memorising.
Is that a re-designed ula on that atmega chip I see.
Well done Andy well done
Search found 29 matches
- Tue Sep 12, 2017 8:58 pm
- Forum: Sinclair Misc
- Topic: A poorly Zeddy
- Replies: 29
- Views: 14509
- Mon Sep 04, 2017 9:54 pm
- Forum: Hardware
- Topic: My ZX81 is not respondiung to Keypad
- Replies: 4
- Views: 2154
Re: My ZX81 is not respondiung to Keypad
Hi there
I had the same problem and it turned out that the ram was at fault
The kursor K is static until you type something.
Hope this helps.
Kim
I had the same problem and it turned out that the ram was at fault
The kursor K is static until you type something.
Hope this helps.
Kim
- Sun Sep 03, 2017 9:08 pm
- Forum: Hardware
- Topic: Zxmore black screen
- Replies: 4
- Views: 2239
Zxmore black screen
Hi all I got the zxmore board from Pokémon and I must say that the board and contents are second to none. My son has built the board and when he told me he couldn't get it to work I had a look. He has a trace missing where the 47pf cap is on pin 4of the clock and the via. He has also lost the pad at...
- Sun Apr 16, 2017 10:50 pm
- Forum: Hardware
- Topic: Zxblast update
- Replies: 2
- Views: 1335
Re: Zxblast update
Yeah thanks Pokémon.
- Fri Apr 14, 2017 6:50 pm
- Forum: Hardware
- Topic: Problem resurrecting my ZX81, please help :)
- Replies: 20
- Views: 6022
Re: Problem resurrecting my ZX81, please help :)
Hi Gabriel
Now I'm no expert but sometimes an incompatible TV would display a white screen with nothing else, or makes the k cursor do weird things
I've had this sort of problem myself.
Hope this helps
Regards
Kim
Now I'm no expert but sometimes an incompatible TV would display a white screen with nothing else, or makes the k cursor do weird things
I've had this sort of problem myself.
Hope this helps
Regards
Kim
- Thu Apr 13, 2017 11:12 pm
- Forum: Hardware
- Topic: Zxblast update
- Replies: 2
- Views: 1335
Zxblast update
Hi all
Hi Pokémon,
I have received my zxblast and it is amazing. The letter you put in the package i have missed placed, what i could do with is the update address if possible.
It is a well thought and well engineered piece of hardware that the ZX81 needed to survive another 30 years.
Thanks
Kim
Hi Pokémon,
I have received my zxblast and it is amazing. The letter you put in the package i have missed placed, what i could do with is the update address if possible.
It is a well thought and well engineered piece of hardware that the ZX81 needed to survive another 30 years.
Thanks
Kim
- Mon Apr 10, 2017 8:17 pm
- Forum: Hardware
- Topic: Bright White screen .No cursor
- Replies: 23
- Views: 10926
Re: Bright White screen .No cursor
Hi matey
Have you tried booting your zx81 with the 16k ram pack on
I think it could be the internal memory at fault at a guess.
If it does boot to the K with the ram pack attached then you have your answer......
Zxkim81
Have you tried booting your zx81 with the 16k ram pack on
I think it could be the internal memory at fault at a guess.
If it does boot to the K with the ram pack attached then you have your answer......
Zxkim81
- Mon Apr 10, 2017 8:11 pm
- Forum: Hardware
- Topic: 7805 regulator
- Replies: 3
- Views: 1618
7805 regulator
Hi all
Is it possible to buy a switching regulator in stead of the 7805 regulator as mine is running very hot so
It's only a matter of time before she blows.
Thanks
Kim
Is it possible to buy a switching regulator in stead of the 7805 regulator as mine is running very hot so
It's only a matter of time before she blows.
Thanks
Kim
- Mon Apr 10, 2017 7:59 pm
- Forum: Hardware
- Topic: Zx81 issue one keyboard anomaly
- Replies: 14
- Views: 4714
Re: Zx81 issue one keyboard anomaly
Hi all I'd like to update you on my zx81 keyboard anomaly. Well i ordered a load of diodes, resistors, electrolytic caps oh and a new keyboard. Then I ordered an oscilloscope and a logic probe. I used the oscilloscope on the ula and found everything ok. Changed the resistor pack on r3 changed diodes...
- Thu Apr 06, 2017 9:58 am
- Forum: SALES
- Topic: ZXblast ram pack extension plus USB flash drive support
- Replies: 3
- Views: 3730
Re: ZXblast ram pack extension plus USB flash drive support
Oh i bought one too
Kim
Kim