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RC2014 Forum!

Posted: Thu Feb 21, 2019 10:37 pm
by dessony
Hello everyone,

There are a few gentlemen who cannibalized their own ZX81s and put their computer parts on their RC2014 Z80 platforms. https://rc2014.co.uk/tag/zx81/

ZX81 Core Board for RC2014 Z80 Platform. And run a web translator from German to English on this web-link: http://forum.tlienhard.com/phpBB3/viewt ... f=2&t=2933

Both web-links are real 100% AWESOME! :o Double Thumbs up!

Cheers,
DesSony

Re: RC2014 Forum!

Posted: Fri Feb 22, 2019 12:06 am
by Andy Rea
so the zx81 core board, takes a ULA and makes the RC2014 zx81 compatible ?

any one got one? and got one of my zx81 ULA replacement modules ?

does it work ?

regards Andy

Re: RC2014 Forum!

Posted: Fri Feb 22, 2019 12:41 am
by dessony
Andy,
I bought a ZX81 ULA replacement module from you. :-)

Everyone else,
Also, I have the ULAs bearing 184 and 210. I ordered a ZX81 core board for the RC2014 Z80 platform last week. I expected that the board will arrive my mailbox next week or so. I might have to order a few BC547 and BC548 transistors and other electronic parts.

Cheers,
DesSony

Re: RC2014 Forum!

Posted: Fri Feb 22, 2019 6:08 pm
by 1024MAK
Andy Rea wrote:
Fri Feb 22, 2019 12:06 am
so the zx81 core board, takes a ULA and makes the RC2014 zx81 compatible ?

any one got one? and got one of my zx81 ULA replacement modules ?

does it work ?

regards Andy
I believe you also have to “adjust” your RC2014 system to provide the bus “isolating” resistors and to adjust the ROM and RAM controls.

Mark

Re: RC2014 Forum!

Posted: Sun Feb 24, 2019 7:44 am
by dessony
https://groups.google.com/forum/#!msg/r ... c8g_ugiseo

David Roper and Spencer Owen designed their own ZX81 Core Boards separately! Mr. Roper seems finished his own board and is ready to sell. Mr. Owen somewhat suspended his own board project. However, these two nice gentlemen are located in England(U.K.).

Cheers,
DesSony

Re: RC2014 Forum!

Posted: Fri Mar 08, 2019 8:35 am
by dessony
DSC00360.JPG
Front of the board
DSC00363.JPG
Back of the board

D. Roper made this ZX81 board to be applied on the RC2014 back panel.

Cheers,
DesSony

Re: RC2014 Forum!

Posted: Fri Mar 08, 2019 8:40 am
by dessony
DSC00366.JPG
Front of the board
DSC00364.JPG
Back of the board

Spencer Owen designed this Enhanced Z80 board.

Cheers,
DesSony