Re: Unusual Amiga keyboard controller

From: Hans Liss <Hans_at_Liss.pp.se>
Date: Sun, 12 Aug 2018 17:51:12 +0200
Message-ID: <09f7a21d-9805-ec94-4901-05732826f4aa@Liss.pp.se>
Hey, I have the same kind of keyboard! I'd like a copy of the ROM.

Best regards,

Hans


On 2018-08-12 16:34, Gerrit Heitsch wrote:
> Hello,
>
> I got my A2000A out of storage this weekend to check it over. Still 
> works, no battery damage since it looks like it was stored in a dry 
> room standing on the front before I got it. So when the battery 
> leaked, the KOH didn't cause any damage.
>
> Expanded the memory card to 1 MB and tested the RAM with systest, works.
>
> Should be usable for games that are happy with 512KB Chip-RAM.
>
> When looking at the keyboard, I noticed that it's one of the early 
> ones made by Cherry (G80-0904) and when I opened it to clean it, I saw 
> that that controller is not a 6570-036 but an 8039 with a 2716 EPROM 
> for the code. Of course I had to desolder it and dump it since I 
> remember dimly that later keyboards of this kind used an 8049 with 
> internal ROM.
>
> If anyone is interested in about 2 KB of 8039 code, drop me a mail. I 
> doubt it will be a pleasant read though.
>
> Since an 8039 is still easily available (or an 8049 switched to 
> external ROM), one could now make new Amiga keyboards... :)
>
>  Gerrit
>
>
Received on 2018-08-12 18:00:04

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