Search found 1226 matches

by RWAP
Sun Oct 15, 2017 7:52 pm
Forum: Sinclair Misc
Topic: MEMOTECH
Replies: 15
Views: 290

Re: MEMOTECH

Yes, a keyboard interface is one of the most popular wishes. A centronics interface is also a potential thanks to the Retro-Printer - however, it would probably make more sense here to develop a simple centronics interface which would work with the ZX81 and ZX Spectrum and just emulate the ZX Printe...
by RWAP
Sun Oct 15, 2017 10:26 am
Forum: Sinclair Misc
Topic: MEMOTECH
Replies: 15
Views: 290

Re: MEMOTECH

After this period of time, there is no problem with reverse engineering products and/or using their case designs (as the design rights have passed). You have to check if there are any valid patents (as they can be renewed), but the main issue is any custom chips/ROMs as there will still be subject t...
by RWAP
Tue Oct 10, 2017 12:26 pm
Forum: SALES
Topic: Memopak 64K
Replies: 2
Views: 124

Re: Memopak 64K

siggi wrote:
Tue Oct 10, 2017 12:03 pm
GOTO ../SALES

;)
I have moved the topic across to the Sales section :)
by RWAP
Wed Oct 04, 2017 8:00 pm
Forum: Sinclair Misc
Topic: The Future of Sinclair ZX World
Replies: 42
Views: 1601

Re: The Future of Sinclair ZX World

I think you are looking at this at too deep a level. My interpretation is that the suggestion is for a range of different groups of 8 bit computer enthusiasts just use a common web site providing a framework with different forums for each group, different wiki sites, etc. etc... By having a non-pro...
by RWAP
Tue Oct 03, 2017 8:26 pm
Forum: Sinclair Misc
Topic: The Future of Sinclair ZX World
Replies: 42
Views: 1601

Re: The Future of Sinclair ZX World

Anyway, I think RWAP is seeing a bigger picture. But I think what needs to be decided is, "What exactly is it that we are trying to prevent from being lost?". If it is just connectivity to data for a hobby that dies with us and the memories we have attaching us to 8-bit machines; then we could just...
by RWAP
Wed Sep 27, 2017 5:44 pm
Forum: SALES
Topic: ZXpand+ ... 3.. 2.. 1..
Replies: 65
Views: 2064

Re: ZXpand+ ... 3.. 2.. 1..

sirmorris wrote:
Wed Sep 27, 2017 11:11 am
Yes. Any moment now. I'm considering moving to a 'build on demand' model if that might be appropriate. You want to try this?
Trouble is the demand is probably for another 50 units.... :lol:
by RWAP
Wed Sep 27, 2017 5:41 pm
Forum: Hardware
Topic: The phantom key press (menace)
Replies: 23
Views: 456

Re: The phantom key press (menace)

It has been suggested on Facebook (as posts are automatically copied to the ZX81 group there) that : "Somebody with an account please suggest to them that it's either the pullup resistors on the keyboard data line socket, or the diodes on the keyboard address line socket"
by RWAP
Tue Sep 26, 2017 6:56 pm
Forum: Hardware
Topic: AY module and zeddynet on ZXmore
Replies: 8
Views: 260

Re: AY module and zeddynet on ZXmore

Welcome to the forum. Both the makers of the ZXmore and ZXpand are on here, so will no doubt cover your points in more detail. There are no actual AY interfaces listed on sellmyretro.com at the moment (just a couple of cases for the ZXpand and an upgrade GAL for the MrX Sound Interface). The ZXPand+...
by RWAP
Tue Sep 26, 2017 6:53 pm
Forum: Hardware
Topic: Gold Fish Zeddy
Replies: 9
Views: 203

Re: Gold Fish Zeddy

If the ULA is socketed - remove it and push it back in (whilst the ZX81 is off of course!) in case there is a build up on the legs... I have 6116 RAM chips on sellmyretro.com if you want to replace the internal RAM, but there is no need if you are going to use the external RAM pack - it might just n...
by RWAP
Tue Sep 26, 2017 5:30 pm
Forum: Hardware
Topic: Gold Fish Zeddy
Replies: 9
Views: 203

Re: Gold Fish Zeddy

Hi Marcus,

When you say the program was not retained....

Do you mean that you entered:

10 PRINT "HELLO WORLD"
RUN
LIST

and there was no program there?

Or did you forget to enter the command LIST (which means list the program)?