ZX81 ULA or ULA Replacement

ZX80 / ZX81 hardware and software requested for either sale or swapping
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Popopo
Posts: 15
Joined: Tue Aug 18, 2020 1:07 pm
Location: Spain

Re: ZX81 ULA or ULA Replacement

Post by Popopo »

mrtinb wrote: Fri Sep 04, 2020 2:59 pm
Popopo wrote: Sun Aug 30, 2020 11:34 pm Hello again,
Sorry but I couldn't get all information about it.

Please to check : http://blog.retroleum.co.uk/electronics ... nt-module/
May it helps you? write to Phill, he will answer you properly.

The price is pretty low compared with other solutions.
Cheers
Hi Popopo.

The question was for a ULA for a ZX81, so neither ULA+ or Nebula ULA will work, as they are for ZX Spectrum.
That's right, sorry,
I am a newbie about ULA.
Whatever do you need a ULA for ZX81 yet?
Let's do it
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mrtinb
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Location: Denmark
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Re: ZX81 ULA or ULA Replacement

Post by mrtinb »

The ULA for the ZX81 has currently two replacements:
  • Andy’s ULA
  • vLA81
These are often cheaper than an original ULA, as the original ULAs are getting rarer.

The replacement ULA often has
added some of these features:
  • M1NOT mod to enable machine language in high memory, that Sinclair intended for data area only
  • Swap black/white on the screen.
  • Built-in back porch video fix
  • Enable RAM in ROM area.
Martin
https://zx.rtin.be
ZX81, Lambda 8300, Commodore 64, Mac G4 Cube
ILAH
Posts: 21
Joined: Mon Aug 10, 2020 8:35 pm

Re: ZX81 ULA or ULA Replacement

Post by ILAH »

@Aurelbios
Found one in the bay (Original 184), but works well with my composite mod.
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