Download early OZ

Discussion forums for users of the Cambridge Z88 Portable Computer
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Chris_68
Posts: 16
Joined: Fri Jan 20, 2023 8:05 am

Download early OZ

Post by Chris_68 »

Hello,

I'm new at this forum so like to introduce myself. My name is Chris and I bought my Z88 -88.

I have an old OZ 2.5 (Swedish) that I think is faulty, I use a more current OZ but still like to have an EPROM with this old OZ. I could find 4.01 from Dennis G page but no older versions, anyone that can guide me where to DL or having the checksum so I can confirm it is correct?

The error I get is "critical error" and it happens when I press the keyboard, when I use a newer OZ this doesn't happen.

Kind regards
Chris
Jbizzel
Posts: 64
Joined: Thu Apr 23, 2020 6:58 pm

Re: Download early OZ

Post by Jbizzel »

4.5 onwards is available on the Z88 wiki.

Bear in mind that any version of OZ booting from slot 1-3 still needs the Rom in 'slot' 0 too. So if that stops working you may have a problem.

One option would be to install a flash chip and replace the internal rom. Rakewell can burn a flash chip with OZ for you if you can't do it yourself.

I know that's not quite what you asked.
Chris_68
Posts: 16
Joined: Fri Jan 20, 2023 8:05 am

Re: Download early OZ

Post by Chris_68 »

Hello,

Thank you very much for your help, I have anther EPROM with 4.01 so no problem there.
The 2.5 versions was mainly for nostalgic reasons since it was the one I got with the computer.

Vic was very kind to send me a copy of OZ2.5.
Jbizzel
Posts: 64
Joined: Thu Apr 23, 2020 6:58 pm

Re: Download early OZ

Post by Jbizzel »

Patters is working on a flashable version of OZ 2-4.

He has produced the files, but they're not tested on real hardware.

They would allow you to downgrade Oz 4.5-oz5 to oz2-4

Sorry, don't know how to mention in this forum
patters
Posts: 121
Joined: Thu Mar 11, 2021 12:34 pm

Re: Download early OZ

Post by patters »

All the ROMs are available here:
https://bitbucket.org/cambridge/z88/src ... /bin/roms/

They're also bundled with OZvm the emulator:
https://gitlab.com/b4works/ozvm/-/releases
Chris_68
Posts: 16
Joined: Fri Jan 20, 2023 8:05 am

Re: Download early OZ

Post by Chris_68 »

Hello,

Thank you very much for your hard work!

/Chris
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