ZX81 strange keyboard problem?

Anything Sinclair ZX Basic related; history, development, tips - differences between BASIC on the ZX80 and ZX81
sirmorris
Posts: 2811
Joined: Thu May 08, 2008 5:45 pm

Re: ZX81 strange keyboard problem?

Post by sirmorris »

Screen Shot 2017-07-20 at 17.21.07.png
(1.82 MiB) Downloaded 570 times

User avatar
1024MAK
Posts: 2897
Joined: Mon Sep 26, 2011 10:56 am
Location: Looking forward to summer in Somerset, UK...

Re: ZX81 strange keyboard problem?

Post by 1024MAK »

Like :P

Mark

Moggy
Posts: 1996
Joined: Wed Jun 18, 2008 2:00 pm

Re: ZX81 strange keyboard problem?

Post by Moggy »

Who's Andy "Rae" :?: ;)

sirmorris
Posts: 2811
Joined: Thu May 08, 2008 5:45 pm

Re: ZX81 strange keyboard problem?

Post by sirmorris »

<cough> :lol:

User avatar
Andy Rea
Posts: 1553
Joined: Fri May 09, 2008 2:48 pm

Re: ZX81 strange keyboard problem?

Post by Andy Rea »

Lol.... I'm back home now and well curiosity got the better of me so i took pin 39 and bent it aside... take that A6' i said to the ula... and this is what happens with " HELLO WORLD " repeated
Image

Looks like in that case the bit stays high, oh well all good fun
AFK

Moggy
Posts: 1996
Joined: Wed Jun 18, 2008 2:00 pm

Re: ZX81 strange keyboard problem?

Post by Moggy »

sirmorris wrote:
Thu Jul 20, 2017 6:22 pm
<cough> :lol:
Naughty Charles very naughty!!

User avatar
Paul
Posts: 1087
Joined: Thu May 27, 2010 8:15 am
Location: Germanys west end

Re: ZX81 strange keyboard problem?

Post by Paul »

Moggy wrote:
Thu Jul 20, 2017 4:42 pm
Who's Andy "Rae" :?: ;)
Maybe a relative of Sugar Rae Robinson? :geek:
In theory, there is no difference between theory and practice. But, in practice, there is.

The_Bert
Posts: 3
Joined: Tue Jan 07, 2014 4:48 am

Re: ZX81 strange keyboard problem?

Post by The_Bert »

sirmorris wrote:
Thu Jul 20, 2017 1:59 pm
Screen Shot 2017-07-20 at 17.21.07.png
What do I have to do to get one of those? It's so beautiful, so majestic! I want one! *throws a hissy-fit on the floor*
:lol:

Zxkim81
Posts: 29
Joined: Sat Mar 18, 2017 7:44 pm

Re: ZX81 strange keyboard problem?

Post by Zxkim81 »

Can I offer an explanation to this problem please.
I think it could be the memory at fault if you plug in the ram pack
Does the problem go away? If so it's the s ram ic,s.....Kim 😋

Post Reply